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The term ‘wannaCry’ is associated with:- a)computer hardware.
- b)a musical band.
- c)cyber attack.
- d)a new epidemic in Africa.
Correct answer is option 'C'. Can you explain this answer?
The term ‘wannaCry’ is associated with:
a)
computer hardware.
b)
a musical band.
c)
cyber attack.
d)
a new epidemic in Africa.
|
Bhaskar Roy answered |
Introduction to WannaCry
WannaCry is a ransomware attack that gained global attention in May 2017. It exploited vulnerabilities in Microsoft Windows operating systems, specifically taking advantage of the EternalBlue exploit developed by the NSA.
How WannaCry Works
- Ransomware Mechanism: Once the malware infiltrates a system, it encrypts files and demands a ransom payment in Bitcoin to restore access.
- Propagation: WannaCry spread rapidly across networks, affecting hundreds of thousands of computers in over 150 countries within a short period.
Impact of WannaCry
- Global Reach: Major organizations, including hospitals, telecommunications companies, and government agencies, were significantly disrupted, leading to a loss of data and operational capabilities.
- Financial Loss: The attack caused billions of dollars in damages, highlighting vulnerabilities in cybersecurity across various sectors.
Prevention and Lessons Learned
- Software Updates: The incident emphasized the importance of regularly updating software to protect against known vulnerabilities.
- Cybersecurity Awareness: It underscored the need for robust cybersecurity training for employees to recognize and respond to potential threats.
Conclusion
WannaCry serves as a critical reminder of the risks associated with cyber threats and the necessity for proactive measures in cybersecurity to safeguard sensitive information and maintain operational integrity.
WannaCry is a ransomware attack that gained global attention in May 2017. It exploited vulnerabilities in Microsoft Windows operating systems, specifically taking advantage of the EternalBlue exploit developed by the NSA.
How WannaCry Works
- Ransomware Mechanism: Once the malware infiltrates a system, it encrypts files and demands a ransom payment in Bitcoin to restore access.
- Propagation: WannaCry spread rapidly across networks, affecting hundreds of thousands of computers in over 150 countries within a short period.
Impact of WannaCry
- Global Reach: Major organizations, including hospitals, telecommunications companies, and government agencies, were significantly disrupted, leading to a loss of data and operational capabilities.
- Financial Loss: The attack caused billions of dollars in damages, highlighting vulnerabilities in cybersecurity across various sectors.
Prevention and Lessons Learned
- Software Updates: The incident emphasized the importance of regularly updating software to protect against known vulnerabilities.
- Cybersecurity Awareness: It underscored the need for robust cybersecurity training for employees to recognize and respond to potential threats.
Conclusion
WannaCry serves as a critical reminder of the risks associated with cyber threats and the necessity for proactive measures in cybersecurity to safeguard sensitive information and maintain operational integrity.
WAP stands for- a)Wireless Addition Protocol
- b)Wireless Automation Protocol
- c)Wireless Adaption Protocol
- d)Wireless Application Protocol
Correct answer is option 'D'. Can you explain this answer?
WAP stands for
a)
Wireless Addition Protocol
b)
Wireless Automation Protocol
c)
Wireless Adaption Protocol
d)
Wireless Application Protocol
|
Vikram Mehta answered |
WAP stands for Wireless Application Protocol. It is a technical standard used for accessing information and services over a wireless network, typically on mobile devices like smartphones and feature phones. WAP enables the delivery of web content, email, and other internet-based services to mobile devices, making it possible to access the internet on the go.
LAN, WAN and MAN are computer networks covering different areas. Their first alphabets L, W and M respectively stand for:- a)Local, World and Middle
- b)Long, Wireless and Metropolitan
- c)Local, Wide and Metropolitan
- d)Least, Wireless and Maximum
Correct answer is option 'C'. Can you explain this answer?
LAN, WAN and MAN are computer networks covering different areas. Their first alphabets L, W and M respectively stand for:
a)
Local, World and Middle
b)
Long, Wireless and Metropolitan
c)
Local, Wide and Metropolitan
d)
Least, Wireless and Maximum
|
|
Vikram Mehta answered |
(a) Local area network (LAN) covers a limited geographical area, typically within a single building or a few buildings.
(c) Wide area network (WAN) spans a large geographical area, connecting multiple LANs or other networks across cities, countries, or even continents.
(c) Metropolitan area network (MAN) is in between LAN and WAN in terms of size, covering a larger area than a LAN but smaller than a WAN, typically serving a city or a metropolitan area.
CD-ROM is a- a)secondary memory
- b)magnetic memory
- c)memory register
- d)semiconductor memory
Correct answer is option 'A'. Can you explain this answer?
CD-ROM is a
a)
secondary memory
b)
magnetic memory
c)
memory register
d)
semiconductor memory
|
Knowledge Center answered |
CD-ROM stands for Compact Disc Read-Only Memory. It is a type of optical storage device used for storing data, typically in the form of computer software, multimedia content, or large amounts of information that can be accessed sequentially. CD-ROMs are read-only, meaning that data can be read from them but not written or modified.
In the context of computer memory, CD-ROM is considered a type of secondary memory. Secondary memory refers to storage devices that can retain data even when the power is turned off and are used for long-term data storage. Other examples of secondary memory include hard disk drives (HDDs), solid-state drives (SSDs), and magnetic tape drives.
Which one among the following is not a basic function of a computer?- a)Accept and process data
- b)Store data
- c)Scan text
- d)Accept input
Correct answer is option 'C'. Can you explain this answer?
Which one among the following is not a basic function of a computer?
a)
Accept and process data
b)
Store data
c)
Scan text
d)
Accept input
|
|
Vikram Mehta answered |
Scan text is not a basic function of a computer. While computers can process and manipulate text data, they do not inherently possess the ability to physically scan text. Scanning text involves using external devices like scanners or optical character recognition (OCR) software, which are not integral to the fundamental operations of a computer. The other options listed, such as accepting and processing data, storing data, and accepting input, are indeed basic functions performed by computers.
SPAM in a system (e-mail) is- a)A message distributed indiscriminately
- b)A search engine
- c)An activity of the user
- d)A command initiated by the sender
Correct answer is option 'A'. Can you explain this answer?
SPAM in a system (e-mail) is
a)
A message distributed indiscriminately
b)
A search engine
c)
An activity of the user
d)
A command initiated by the sender
|
|
Vikram Mehta answered |
SPAM in a system (e-mail) refers to a message that is distributed indiscriminately to a large number of recipients, often unsolicited. These messages are usually commercial in nature and sent in bulk, clogging up users' inboxes and causing annoyance. SPAM emails are generally considered to be a form of unwanted and intrusive communication.
The devices that work with computer systems as soon as they are connected are described as- a)Hot Swapping
- b)Bay Swap
- c)Plug-N-Play
- d)USB Swapping
Correct answer is option 'C'. Can you explain this answer?
The devices that work with computer systems as soon as they are connected are described as
a)
Hot Swapping
b)
Bay Swap
c)
Plug-N-Play
d)
USB Swapping
|
|
Vikram Mehta answered |
Devices that work with computer systems as soon as they are connected without requiring manual configuration or device driver installations are described as "Plug-N-Play" (PnP). When you plug in a PnP device, the computer automatically detects it and configures it to work with the system without the need for user intervention. This technology simplifies the process of adding new hardware to a computer and makes it more convenient for users.
Which one of the following is hardware?- a)Powerpoint
- b)Control unit
- c)Printer driver
- d)Operating system
Correct answer is option 'B'. Can you explain this answer?
Which one of the following is hardware?
a)
Powerpoint
b)
Control unit
c)
Printer driver
d)
Operating system
|
|
Vikram Mehta answered |
The control unit is a hardware component and a vital part of the central processing unit (CPU) in a computer. It is responsible for fetching and interpreting instructions from the computer's memory and then executing them by coordinating various components of the CPU. The control unit is involved in the instruction cycle and ensures that data moves correctly between the CPU and other hardware components to perform the desired operations.
Bluetooth technology allows- a)sending of files within the range of 10km
- b)sending an e-mail
- c)wireless connection between various devices/equipments over short distances
- d)downloading of movies from the Internet
Correct answer is option 'C'. Can you explain this answer?
Bluetooth technology allows
a)
sending of files within the range of 10km
b)
sending an e-mail
c)
wireless connection between various devices/equipments over short distances
d)
downloading of movies from the Internet
|
|
Vikram Mehta answered |
Bluetooth technology allows for the establishment of wireless connections between various devices and equipment over short distances, typically within a range of about 10 meters (approximately 33 feet). It is commonly used to connect devices such as smartphones, tablets, laptops, headphones, speakers, smartwatches, and other peripherals, enabling them to communicate and exchange data without the need for physical cables. Bluetooth is commonly used for tasks like transferring files, streaming audio, and controlling peripherals remotely. However, it is not suitable for sending files over long distances or downloading movies from the Internet.
Which one of the following software applications would be the most appropriate for performing numerical and statistical calculations?- a)Database
- b)Spreadsheet
- c)Graphics package
- d)Document processor
Correct answer is option 'B'. Can you explain this answer?
Which one of the following software applications would be the most appropriate for performing numerical and statistical calculations?
a)
Database
b)
Spreadsheet
c)
Graphics package
d)
Document processor
|
|
Vikram Mehta answered |
Spreadsheets are software applications used for numerical and statistical calculations. They provide a grid-like interface to organize data into rows and columns, enabling users to enter, manipulate, and analyze numerical information. With built-in functions and formulas, they are widely used in finance, accounting, science, and business for data analysis.
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