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All questions of Networking Fundamentals & Physical Layer for Computer Science Engineering (CSE) Exam
1. The IETF standards documents are called- a)RFC
- b)RCF
- c)ID
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
1. The IETF standards documents are called
a)
RFC
b)
RCF
c)
ID
d)
None of the mentioned
|
Neha Choudhury answered |
A Request for Comments (RFC) is a formal document from the Internet Engineering Task Force ( IETF ) that is the result of committee drafting and subsequent review by interested parties. Some RFCs are informational in nature.
Communication between a computer and a keyboard involves ______________ transmission- a)Automatic
- b)Half-duplex
- c)Full-duplex
- d)Simplex
Correct answer is option 'D'. Can you explain this answer?
Communication between a computer and a keyboard involves ______________ transmission
a)
Automatic
b)
Half-duplex
c)
Full-duplex
d)
Simplex
|
Yash Patel answered |
In simplex transmission, data flows in single direction which in this case refers to the data flowing from the keyboard to the computer. Another example would be of the mouse where the data flows from the mouse to the computer only.
The structure or format of data is called- a)Syntax
- b)Semantics
- c)Struct
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
The structure or format of data is called
a)
Syntax
b)
Semantics
c)
Struct
d)
None of the mentioned
|
Swara Dasgupta answered |
The structure and format of data are defined using syntax. Semantics defines how a particular pattern to be interpreted, and what action is to be taken based on that interpretation.
Which of this is not a network edge device?- a)PC
- b)Smartphones
- c)Servers
- d)Switch
Correct answer is option 'D'. Can you explain this answer?
Which of this is not a network edge device?
a)
PC
b)
Smartphones
c)
Servers
d)
Switch
|
Sagarika Patel answered |
Network egde devices refer to host systems, which can host applications like web browser. Hence,(D) is correct.
Which one of the following computer network is built on the top of another network?
- a)prior network
- b)chief network
- c)prime network
- d)overlay network
Correct answer is option 'D'. Can you explain this answer?
Which one of the following computer network is built on the top of another network?
a)
prior network
b)
chief network
c)
prime network
d)
overlay network
|
Ravi Singh answered |
Answer: d
An overlay network is a computer network that is built on top of another network.
An overlay network is a computer network that is built on top of another network.
Among the optical-distribution architectures that is essentially switched ehternet is- a)AON
- b)PON
- c)NON
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Among the optical-distribution architectures that is essentially switched ehternet is
a)
AON
b)
PON
c)
NON
d)
None of the mentioned
|
Roshni Kumar answered |
Answer:a
Explanation: Active optical networks are essentially switched ehternets.
Explanation: Active optical networks are essentially switched ehternets.
Network congestion occurs
- a)in case of traffic overloading
- b)when a system terminates
- c)when connection between two nodes terminates
- d)none of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Network congestion occurs
a)
in case of traffic overloading
b)
when a system terminates
c)
when connection between two nodes terminates
d)
none of the mentioned
|
Shalini Rane answered |
Network congestion occurs when traffic in the network is more than the network could handle.
Answer: a
Identify the statement which cannot be associated with OSI model- a)A structured way to discuss and easier update syatem components
- b)One layer may duplicate lower layer functionality
- c)Functionality at one layer no way requires information from another layer
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
Identify the statement which cannot be associated with OSI model
a)
A structured way to discuss and easier update syatem components
b)
One layer may duplicate lower layer functionality
c)
Functionality at one layer no way requires information from another layer
d)
None of the mentioned
|
Megha Yadav answered |
Answer: c
Explanation: One layer may use the information from another layer Ex: time stamp value.
Explanation: One layer may use the information from another layer Ex: time stamp value.
When collection of various computers seems a single coherent system to its client, then it is called
- a)computer network
- b)distributed system
- c)both (a) and (b)
- d)none of the mentioned
Correct answer is option 'B'. Can you explain this answer?
When collection of various computers seems a single coherent system to its client, then it is called
a)
computer network
b)
distributed system
c)
both (a) and (b)
d)
none of the mentioned
|
Rajat Sharma answered |
A distributed system is also the same as computer network but the main difference is that the whole collection of computers appears to its users as a single coherent system.
Answer: b
The OSI model has _______ layers.- a)4
- b)5
- c)6
- d)7
Correct answer is option 'D'. Can you explain this answer?
The OSI model has _______ layers.
a)
4
b)
5
c)
6
d)
7
|
Vandana Desai answered |
Understanding the OSI Model
The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and implement networking protocols in seven distinct layers. Each layer serves a specific function in the process of data communication.
Seven Layers of the OSI Model
The OSI model consists of the following seven layers:
Importance of the OSI Model
Understanding the OSI model is crucial for several reasons:
In conclusion, the OSI model comprises seven layers, each serving a vital role in the communication process, making it a fundamental concept in computer networking.
The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and implement networking protocols in seven distinct layers. Each layer serves a specific function in the process of data communication.
Seven Layers of the OSI Model
The OSI model consists of the following seven layers:
- Layer 1: Physical Layer - Deals with the physical connection between devices, including cables, switches, and other hardware.
- Layer 2: Data Link Layer - Responsible for node-to-node data transfer and error detection/correction in frames.
- Layer 3: Network Layer - Handles routing and forwarding of data packets across the network.
- Layer 4: Transport Layer - Ensures reliable data transfer with error recovery and flow control through segments.
- Layer 5: Session Layer - Manages sessions between applications, providing control over the dialogues.
- Layer 6: Presentation Layer - Translates data formats, handles encryption, and ensures that data is in a readable format.
- Layer 7: Application Layer - Interfaces directly with end-user applications, facilitating communication between software and the network.
Importance of the OSI Model
Understanding the OSI model is crucial for several reasons:
- It standardizes networking protocols to ensure interoperability.
- It helps in troubleshooting network issues by isolating problems to specific layers.
- It provides a framework for developing and understanding new networking technologies.
In conclusion, the OSI model comprises seven layers, each serving a vital role in the communication process, making it a fundamental concept in computer networking.
The number of layers in Internet protocol stack- a)5
- b)7
- c)6
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
The number of layers in Internet protocol stack
a)
5
b)
7
c)
6
d)
None of the mentioned
|
|
Subham Menon answered |
Answer: a
Explanation: None.
Explanation: None.
These factors affect transmission rate in DSL- a)The gauge of the twisted-pair line
- b)Degree of electrical interfernece
- c)Shadow fading
- d)Both a and b
Correct answer is option 'D'. Can you explain this answer?
These factors affect transmission rate in DSL
a)
The gauge of the twisted-pair line
b)
Degree of electrical interfernece
c)
Shadow fading
d)
Both a and b
|
Anjana Mishra answered |
Factors Affecting Transmission Rate in DSL
Digital Subscriber Line (DSL) technology has several factors that influence its transmission rate, primarily related to the physical medium and environmental conditions.
The Gauge of the Twisted-Pair Line
- The thickness (gauge) of the twisted-pair copper wire used in DSL connections plays a significant role in signal attenuation and transmission speed.
- Thicker wires (lower gauge numbers) generally allow for better signal quality and reduced loss over distance, leading to higher transmission rates.
- Conversely, thinner wires (higher gauge numbers) can introduce more resistance, resulting in reduced performance.
Degree of Electrical Interference
- Electrical interference from various sources (like radio frequencies, neighboring cables, and electronic devices) can significantly degrade DSL signals.
- This interference can introduce noise, which affects the clarity of the signal and can lead to lower data rates.
- Effective shielding and proper installation practices can help mitigate these effects, enhancing transmission rates.
Why Shadow Fading Is Not Included
- Shadow fading, which refers to variations in signal strength caused by physical obstructions (like buildings or trees), primarily affects wireless communication rather than wired connections like DSL.
- Therefore, while it is a factor in other types of networks, it does not have a direct impact on DSL transmission rates.
Conclusion
In summary, the correct answer is option 'D' because both the gauge of the twisted-pair line and the degree of electrical interference directly affect the transmission rate in DSL. Shadow fading, while relevant in other contexts, does not apply here. Understanding these factors is crucial for optimizing DSL performance in real-world applications.
Digital Subscriber Line (DSL) technology has several factors that influence its transmission rate, primarily related to the physical medium and environmental conditions.
The Gauge of the Twisted-Pair Line
- The thickness (gauge) of the twisted-pair copper wire used in DSL connections plays a significant role in signal attenuation and transmission speed.
- Thicker wires (lower gauge numbers) generally allow for better signal quality and reduced loss over distance, leading to higher transmission rates.
- Conversely, thinner wires (higher gauge numbers) can introduce more resistance, resulting in reduced performance.
Degree of Electrical Interference
- Electrical interference from various sources (like radio frequencies, neighboring cables, and electronic devices) can significantly degrade DSL signals.
- This interference can introduce noise, which affects the clarity of the signal and can lead to lower data rates.
- Effective shielding and proper installation practices can help mitigate these effects, enhancing transmission rates.
Why Shadow Fading Is Not Included
- Shadow fading, which refers to variations in signal strength caused by physical obstructions (like buildings or trees), primarily affects wireless communication rather than wired connections like DSL.
- Therefore, while it is a factor in other types of networks, it does not have a direct impact on DSL transmission rates.
Conclusion
In summary, the correct answer is option 'D' because both the gauge of the twisted-pair line and the degree of electrical interference directly affect the transmission rate in DSL. Shadow fading, while relevant in other contexts, does not apply here. Understanding these factors is crucial for optimizing DSL performance in real-world applications.
The function of DSLAM is- a)Convert analog signals into digital signals
- b)Convert digital signals into analog signals
- c)Amplify digital signals
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
The function of DSLAM is
a)
Convert analog signals into digital signals
b)
Convert digital signals into analog signals
c)
Amplify digital signals
d)
None of the mentioned
|
|
Tejas Ghoshal answered |
Answer: a
Explanation: The DSLAM located in telco’s Central Office does this function.
Explanation: The DSLAM located in telco’s Central Office does this function.
In DSL telco provides these services- a)Wired phone access
- b)ISP
- c)All of the mentioned
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
In DSL telco provides these services
a)
Wired phone access
b)
ISP
c)
All of the mentioned
d)
None of the mentioned
|
|
Akshita Choudhury answered |
DSL (Digital Subscriber Line) is a telecommunications technology that provides high-speed internet access over traditional copper telephone lines. In addition to internet connectivity, DSL telcos also offer various services to their customers. The correct answer to the question is option 'C', which states that DSL telcos provide all of the mentioned services. Let's discuss each service in detail:
Wired phone access:
- DSL telcos offer wired phone access as part of their service package. This allows customers to make and receive phone calls using their DSL connection. By utilizing the existing copper telephone lines, users can have both internet and telephone services simultaneously.
ISP (Internet Service Provider):
- DSL telcos are primarily known for being internet service providers. They deliver high-speed internet connectivity to residential and business customers through DSL technology. DSL uses a separate frequency band on the copper wires, allowing simultaneous transmission of voice and data.
Advantages of DSL telco services:
- Cost-effective: DSL services are generally more affordable compared to other high-speed internet options such as fiber optic connections.
- Wide availability: Since DSL utilizes existing telephone infrastructure, it is widely available in many areas, including rural regions.
- Simultaneous use: DSL allows users to access the internet and make phone calls simultaneously without any interference or disruption.
Other services provided by DSL telcos:
- Value-added services: DSL telcos often provide additional services such as email accounts, web hosting, online storage, and security features to enhance the overall customer experience.
- Bundled services: Telcos may offer bundled packages that include internet, phone, and even television services to provide customers with a comprehensive solution for their communication needs.
- Customer support: DSL telcos typically offer customer support services to assist users with any technical issues or inquiries they may have.
In conclusion, DSL telcos provide a range of services, including wired phone access and being an internet service provider (ISP). These services are often bundled together to offer customers a comprehensive solution for their communication and connectivity needs.
Wired phone access:
- DSL telcos offer wired phone access as part of their service package. This allows customers to make and receive phone calls using their DSL connection. By utilizing the existing copper telephone lines, users can have both internet and telephone services simultaneously.
ISP (Internet Service Provider):
- DSL telcos are primarily known for being internet service providers. They deliver high-speed internet connectivity to residential and business customers through DSL technology. DSL uses a separate frequency band on the copper wires, allowing simultaneous transmission of voice and data.
Advantages of DSL telco services:
- Cost-effective: DSL services are generally more affordable compared to other high-speed internet options such as fiber optic connections.
- Wide availability: Since DSL utilizes existing telephone infrastructure, it is widely available in many areas, including rural regions.
- Simultaneous use: DSL allows users to access the internet and make phone calls simultaneously without any interference or disruption.
Other services provided by DSL telcos:
- Value-added services: DSL telcos often provide additional services such as email accounts, web hosting, online storage, and security features to enhance the overall customer experience.
- Bundled services: Telcos may offer bundled packages that include internet, phone, and even television services to provide customers with a comprehensive solution for their communication needs.
- Customer support: DSL telcos typically offer customer support services to assist users with any technical issues or inquiries they may have.
In conclusion, DSL telcos provide a range of services, including wired phone access and being an internet service provider (ISP). These services are often bundled together to offer customers a comprehensive solution for their communication and connectivity needs.
Two devices are in network if
- a)a process in one device is able to exchange information with a process in another device
- b)a process is running on both devices
- c)PIDs of the processes running of different devices are same
- d)none of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Two devices are in network if
a)
a process in one device is able to exchange information with a process in another device
b)
a process is running on both devices
c)
PIDs of the processes running of different devices are same
d)
none of the mentioned
|
|
Shalini Rane answered |
For two devices to be in a network, they must be able to exchange information with each other. This can be achieved by running processes on both devices that are capable of communicating with each other.
Therefore, option A is the correct answer.
As the resources are reserved between two communicating end systems in circuit switching, ___________ is achieved.- a)authentication
- b)guaranteed constant rate
- c)reliability
- d)store and forward
Correct answer is option 'B'. Can you explain this answer?
As the resources are reserved between two communicating end systems in circuit switching, ___________ is achieved.
a)
authentication
b)
guaranteed constant rate
c)
reliability
d)
store and forward
|
|
Krithika Gupta answered |
The Answer:
Explanation:
In circuit switching, the resources are reserved between two communicating end systems before the actual communication takes place. This implies that a dedicated communication path is established between the sender and receiver, and this path remains reserved for the entire duration of the communication session. This results in guaranteed constant rate transmission.
Guaranteed Constant Rate Transmission:
When resources are reserved in circuit switching, it ensures a guaranteed constant rate of transmission between the sender and receiver. The reserved resources include the bandwidth, buffers, and processing capacity required for the communication session. As a result, the transmission rate remains constant throughout the session, ensuring a reliable and predictable communication experience.
Example:
For example, consider a traditional telephone call. When a person makes a phone call, the circuit-switched network establishes a dedicated physical connection between the caller and the receiver. During the call, the resources such as the bandwidth and processing capacity are allocated exclusively for that call. This guarantees a constant rate of transmission, ensuring that the voice signals are delivered in real-time without any interruptions or delays.
Benefits of Guaranteed Constant Rate:
1. Real-time Applications: Circuit switching is particularly suitable for real-time applications such as voice and video calls, where a constant and predictable transmission rate is essential.
2. Reliable Communication: By reserving resources, circuit switching ensures a reliable communication experience. The dedicated connection between the sender and receiver minimizes the chances of packet loss or interruptions.
3. Quality of Service: Circuit switching provides a guaranteed quality of service as the reserved resources ensure a consistent transmission rate and minimal delay.
4. Efficient Resource Utilization: Although circuit switching requires the reservation of resources, it allows for efficient resource utilization as the allocated resources are exclusively used by the communicating parties.
5. Connection-oriented: Circuit switching is a connection-oriented communication method, where a dedicated path is established before the communication takes place. This ensures a reliable and predictable communication experience.
Conclusion:
In circuit switching, the reservation of resources between two communicating end systems enables guaranteed constant rate transmission. This guarantees a reliable and predictable communication experience, making circuit switching suitable for real-time applications and ensuring efficient resource utilization.
Explanation:
In circuit switching, the resources are reserved between two communicating end systems before the actual communication takes place. This implies that a dedicated communication path is established between the sender and receiver, and this path remains reserved for the entire duration of the communication session. This results in guaranteed constant rate transmission.
Guaranteed Constant Rate Transmission:
When resources are reserved in circuit switching, it ensures a guaranteed constant rate of transmission between the sender and receiver. The reserved resources include the bandwidth, buffers, and processing capacity required for the communication session. As a result, the transmission rate remains constant throughout the session, ensuring a reliable and predictable communication experience.
Example:
For example, consider a traditional telephone call. When a person makes a phone call, the circuit-switched network establishes a dedicated physical connection between the caller and the receiver. During the call, the resources such as the bandwidth and processing capacity are allocated exclusively for that call. This guarantees a constant rate of transmission, ensuring that the voice signals are delivered in real-time without any interruptions or delays.
Benefits of Guaranteed Constant Rate:
1. Real-time Applications: Circuit switching is particularly suitable for real-time applications such as voice and video calls, where a constant and predictable transmission rate is essential.
2. Reliable Communication: By reserving resources, circuit switching ensures a reliable communication experience. The dedicated connection between the sender and receiver minimizes the chances of packet loss or interruptions.
3. Quality of Service: Circuit switching provides a guaranteed quality of service as the reserved resources ensure a consistent transmission rate and minimal delay.
4. Efficient Resource Utilization: Although circuit switching requires the reservation of resources, it allows for efficient resource utilization as the allocated resources are exclusively used by the communicating parties.
5. Connection-oriented: Circuit switching is a connection-oriented communication method, where a dedicated path is established before the communication takes place. This ensures a reliable and predictable communication experience.
Conclusion:
In circuit switching, the reservation of resources between two communicating end systems enables guaranteed constant rate transmission. This guarantees a reliable and predictable communication experience, making circuit switching suitable for real-time applications and ensuring efficient resource utilization.
In _________ systems, resources are allocated on demand.- a)packet switching
- b)circuit switching
- c)line switching
- d)frequency switching
Correct answer is option 'A'. Can you explain this answer?
In _________ systems, resources are allocated on demand.
a)
packet switching
b)
circuit switching
c)
line switching
d)
frequency switching
|
Shraddha Chauhan answered |
Packet Switching Systems
Explanation:
Packet switching systems allocate resources on demand, unlike circuit switching systems where resources are reserved for the duration of the communication session. In packet switching, data is divided into small packets that can be transmitted independently across a network. When a user sends data, it is broken down into packets and each packet is sent separately. This allows resources to be allocated as needed for each packet, making the system more efficient and flexible.
Key Points:
- Resources are allocated on demand in packet switching systems.
- Data is divided into packets for transmission.
- Each packet is sent independently across the network.
- Flexibility and efficiency are key advantages of packet switching over circuit switching.
By following this approach, packet switching systems can handle varying levels of network traffic more effectively compared to circuit switching systems. This dynamic allocation of resources based on demand helps in optimizing the utilization of network resources and improving overall network performance.
The first Network- a)CNNET
- b)NSFNET
- c)ASAPNET
- d)ARPANET
Correct answer is option 'D'. Can you explain this answer?
The first Network
a)
CNNET
b)
NSFNET
c)
ASAPNET
d)
ARPANET
|
Prateek Khanna answered |
Answer: d
Explanation: None.
Explanation: None.
A __________ is a device that forwards packets between networks by processing the routing information included in the packet.
- a)bridge
- b)firewall
- c)router
- d)all of the mentioned
Correct answer is option 'C'. Can you explain this answer?
A __________ is a device that forwards packets between networks by processing the routing information included in the packet.
a)
bridge
b)
firewall
c)
router
d)
all of the mentioned
|
|
Mayank Khanna answered |
Router as a Device that Forwards Packets Between Networks
A router is a networking device that forwards data packets between computer networks. It operates at the network layer of the OSI model and uses routing tables to determine the best path for forwarding data packets. Routers are commonly used to connect two or more networks together and to facilitate communication between devices on different networks.
Routing Information Processing
Routing information is included in the packet header and is used by routers to determine the best path for forwarding the packet. The routing information typically includes the source and destination IP addresses, as well as other information such as the time-to-live (TTL) value and any optional parameters.
When a router receives a packet, it examines the destination IP address and consults its routing table to determine the next hop for forwarding the packet. The routing table contains information about the available network paths and the associated metrics, such as the number of hops or the bandwidth of the link.
If the router finds a matching entry in the routing table, it forwards the packet to the next hop. If there is no matching entry, the router may send an error message back to the source or forward the packet to a default gateway.
Advantages of Using a Router
There are several advantages of using a router in a network:
1. Efficient Data Transfer: Routers can help to improve the efficiency of data transfer by selecting the shortest and most efficient path for data packets.
2. Segmentation: Routers can be used to segment a larger network into smaller subnets, which can help to reduce network congestion and improve performance.
3. Security: Routers can be configured to provide security features such as firewall protection, intrusion detection, and virtual private networks (VPNs).
Conclusion
In conclusion, a router is a device that forwards packets between networks by processing the routing information included in the packet. It uses routing tables to determine the best path for forwarding the packet and can improve the efficiency, segmentation, and security of a network.
A router is a networking device that forwards data packets between computer networks. It operates at the network layer of the OSI model and uses routing tables to determine the best path for forwarding data packets. Routers are commonly used to connect two or more networks together and to facilitate communication between devices on different networks.
Routing Information Processing
Routing information is included in the packet header and is used by routers to determine the best path for forwarding the packet. The routing information typically includes the source and destination IP addresses, as well as other information such as the time-to-live (TTL) value and any optional parameters.
When a router receives a packet, it examines the destination IP address and consults its routing table to determine the next hop for forwarding the packet. The routing table contains information about the available network paths and the associated metrics, such as the number of hops or the bandwidth of the link.
If the router finds a matching entry in the routing table, it forwards the packet to the next hop. If there is no matching entry, the router may send an error message back to the source or forward the packet to a default gateway.
Advantages of Using a Router
There are several advantages of using a router in a network:
1. Efficient Data Transfer: Routers can help to improve the efficiency of data transfer by selecting the shortest and most efficient path for data packets.
2. Segmentation: Routers can be used to segment a larger network into smaller subnets, which can help to reduce network congestion and improve performance.
3. Security: Routers can be configured to provide security features such as firewall protection, intrusion detection, and virtual private networks (VPNs).
Conclusion
In conclusion, a router is a device that forwards packets between networks by processing the routing information included in the packet. It uses routing tables to determine the best path for forwarding the packet and can improve the efficiency, segmentation, and security of a network.
The _______ is the physical path over which a message travels- a)Path
- b)Medium
- c)Protocol
- d)Route
Correct answer is option 'B'. Can you explain this answer?
The _______ is the physical path over which a message travels
a)
Path
b)
Medium
c)
Protocol
d)
Route
|
|
Mahi Yadav answered |
Answer: b
Explanation: Message travel from sender to reciever via a medium using a protocol.
Explanation: Message travel from sender to reciever via a medium using a protocol.
Which of the following is not an application layer service?- a)Network virtual terminal
- b)File transfer, access, and management
- c)Mail service
- d)Error control
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not an application layer service?
a)
Network virtual terminal
b)
File transfer, access, and management
c)
Mail service
d)
Error control
|
|
Sudhir Patel answered |
Application layer is the topmost layer in the OSI model. Network virtual terminal, mail service, file transfer, access and management are all services of the application layer. It uses protocols like HTTP, FTP, and DNS etc. to provide these services.
The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method.- a)Packet switching
- b)Circuit switching
- c)Line switching
- d)Frequency switching
Correct answer is option 'B'. Can you explain this answer?
The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method.
a)
Packet switching
b)
Circuit switching
c)
Line switching
d)
Frequency switching
|
Eesha Bhat answered |
In circuit switching, a physical path between the sender and receiver is established. This path is maintained until the connection is needed. Circuit switching is implemented in the Physical layer and is used in telephonic systems.
Which of this is not a constituent of residential telephone line?- a)A high-speed downstream channel
- b)A medium-speed downstream channel
- c)A low-speed downstream channel
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
Which of this is not a constituent of residential telephone line?
a)
A high-speed downstream channel
b)
A medium-speed downstream channel
c)
A low-speed downstream channel
d)
None of the mentioned
|
Garima Bose answered |
Answer: c
Explanation: The third part is ordinary two way telephone channel.
Explanation: The third part is ordinary two way telephone channel.
The following term is not associted with DSL- a)DSLAM
- b)CO
- c)Splitter
- d)CMTS
Correct answer is option 'D'. Can you explain this answer?
The following term is not associted with DSL
a)
DSLAM
b)
CO
c)
Splitter
d)
CMTS
|
Priyanka Chopra answered |
Answer: d
Explanation: Cable modem termination system is used in cable internet access.
Explanation: Cable modem termination system is used in cable internet access.
Communication channel is shared by all the machines on the network in
- a)broadcast network
- b)unicast network
- c)multicast network
- d)none of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Communication channel is shared by all the machines on the network in
a)
broadcast network
b)
unicast network
c)
multicast network
d)
none of the mentioned
|
|
Arka Shah answered |
Answer: a
An example of a broadcast network is a Local Area Network (LAN) where all the devices on the network share a common communication channel, and data packets are broadcasted to all the connected devices on the network. Hence, the correct answer to the given question is option 'A' i.e., broadcast network.
An example of a broadcast network is a Local Area Network (LAN) where all the devices on the network share a common communication channel, and data packets are broadcasted to all the connected devices on the network. Hence, the correct answer to the given question is option 'A' i.e., broadcast network.
Bluetooth is an example of
- a)personal area network
- b)local area network
- c)virtual private network
- d)none of the mentioned
Correct answer is option 'A'. Can you explain this answer?
Bluetooth is an example of
a)
personal area network
b)
local area network
c)
virtual private network
d)
none of the mentioned
|
|
Arka Shah answered |
- Because it can only be utilized in our personal space, Bluetooth is a form of personal area network. So, when you use Bluetooth to share data from your phone, you establish a network known as a personal area network.
- A personal area network is something like a Bluetooth mouse, keyboard, or headphones, for instance.
- The link between a Bluetooth earpiece and a smartphone is one of the most typical real-world instances of a PAN.
Answer: a
In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are- a)Added
- b)Removed
- c)Rearranged
- d)Modified
Correct answer is option 'A'. Can you explain this answer?
In the layer hierarchy as the data packet moves from the upper to the lower layers, headers are
a)
Added
b)
Removed
c)
Rearranged
d)
Modified
|
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Sagarika Patel answered |
Every layer adds its own header to the packet from previous layer.
Choose the statement which is not applicable for cable internet access- a)It is a shared broadcast medium
- b)It includes HFCs
- c)Cable modem connects home PC to Ethernet port
- d)Analog signal is converted to digital signal in DSLAM
Correct answer is option 'D'. Can you explain this answer?
Choose the statement which is not applicable for cable internet access
a)
It is a shared broadcast medium
b)
It includes HFCs
c)
Cable modem connects home PC to Ethernet port
d)
Analog signal is converted to digital signal in DSLAM
|
|
Ayush Mehta answered |
Answer: d
Explanation: In cable access analog signal is converted to digital signal by CMTS.
Explanation: In cable access analog signal is converted to digital signal by CMTS.
Which of the following switch methods creates a point-to-point physical connection between two or more computers?
- a)Circuit switching
- b)Packet switching
- c)Message switching
- d)None of the these
Correct answer is option 'A'. Can you explain this answer?
Which of the following switch methods creates a point-to-point physical connection between two or more computers?
a)
Circuit switching
b)
Packet switching
c)
Message switching
d)
None of the these
|
Tanishq Chavan answered |
Point-to-Point Physical Connection
A point-to-point physical connection refers to a direct link between two or more computers without any intermediate network devices. In this type of connection, data is transmitted directly between the sender and the recipient without being relayed through any other device.
Switch Methods
Switching methods are used to establish communication between multiple devices in a network. The three main types of switching methods are message switching, packet switching, and circuit switching.
a) Message Switching
Message switching is a method of data transmission where the entire message is sent to the destination node in one go. In this method, the entire message is stored in the memory of each intermediate node before it is forwarded to the next node. The message is sent only when the entire message has been received and stored in the destination node.
Message switching does not create a point-to-point physical connection between two or more computers as it involves multiple intermediate nodes for message forwarding.
b) Packet Switching
Packet switching is a method of data transmission where data is divided into small packets and sent to the destination node. Each packet contains a header with routing information that is used to determine the next hop for the packet. In this method, packets are sent independently of each other and may take different routes to reach the destination node.
Packet switching does not create a point-to-point physical connection between two or more computers as packets may be relayed through multiple intermediate nodes before reaching the destination node.
c) Circuit Switching
Circuit switching is a method of data transmission where a dedicated physical connection is established between two or more computers for the duration of the communication. In this method, a circuit is established between the sender and the recipient before any data is transmitted.
Circuit switching creates a point-to-point physical connection between two or more computers as a dedicated physical connection is established for the communication.
Conclusion
The correct answer is option 'A' - Message switching does not create a point-to-point physical connection between two or more computers. Circuit switching creates a point-to-point physical connection between two or more computers.
A point-to-point physical connection refers to a direct link between two or more computers without any intermediate network devices. In this type of connection, data is transmitted directly between the sender and the recipient without being relayed through any other device.
Switch Methods
Switching methods are used to establish communication between multiple devices in a network. The three main types of switching methods are message switching, packet switching, and circuit switching.
a) Message Switching
Message switching is a method of data transmission where the entire message is sent to the destination node in one go. In this method, the entire message is stored in the memory of each intermediate node before it is forwarded to the next node. The message is sent only when the entire message has been received and stored in the destination node.
Message switching does not create a point-to-point physical connection between two or more computers as it involves multiple intermediate nodes for message forwarding.
b) Packet Switching
Packet switching is a method of data transmission where data is divided into small packets and sent to the destination node. Each packet contains a header with routing information that is used to determine the next hop for the packet. In this method, packets are sent independently of each other and may take different routes to reach the destination node.
Packet switching does not create a point-to-point physical connection between two or more computers as packets may be relayed through multiple intermediate nodes before reaching the destination node.
c) Circuit Switching
Circuit switching is a method of data transmission where a dedicated physical connection is established between two or more computers for the duration of the communication. In this method, a circuit is established between the sender and the recipient before any data is transmitted.
Circuit switching creates a point-to-point physical connection between two or more computers as a dedicated physical connection is established for the communication.
Conclusion
The correct answer is option 'A' - Message switching does not create a point-to-point physical connection between two or more computers. Circuit switching creates a point-to-point physical connection between two or more computers.
Most packet switches use this principle ____________- a)Stop and wait
- b)Store and forward
- c)Store and wait
- d)Stop and forward
Correct answer is option 'B'. Can you explain this answer?
Most packet switches use this principle ____________
a)
Stop and wait
b)
Store and forward
c)
Store and wait
d)
Stop and forward
|
|
Sudhir Patel answered |
The packet switch will not transmit the first bit to outbound link until it receives the entire packet. If the entire packet is not received and the time-out period expires, the packet switch will inform the sender to resend the part of packet or the entire packet based on the algorithm being used.
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