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Test: Application Layer Protocols - Computer Science Engineering (CSE) MCQ


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10 Questions MCQ Test - Test: Application Layer Protocols

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Test: Application Layer Protocols - Question 1

Which of the following is/are example(s) of stateful application layer protocol?
i. HTTP
ii. FTP
iii. TCP
iv. POP3

Detailed Solution for Test: Application Layer Protocols - Question 1

HTTP - stateless
FTP - stateful
TCP - not application layer protocol
POP3 - Stateful
And according to options answer would be C)

Test: Application Layer Protocols - Question 2

Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host?

Test: Application Layer Protocols - Question 3

Which one of the following uses UDP as the transport protocol?

Detailed Solution for Test: Application Layer Protocols - Question 3

The answer is C.
Where quick response is needed, there UDP is preferred.

Test: Application Layer Protocols - Question 4

What is the maximum size of data that the application layer can pass on to the TCP layer below?

Detailed Solution for Test: Application Layer Protocols - Question 4

OPTION A
Its transport layers responsibility to divide data in to fragments/ packets. Application layer need not worry about it.

Test: Application Layer Protocols - Question 5

A bit-stuffing based framing protocol uses an 8-bit delimiter pattern of 01111110. If the output bit-string after stuffing is01111100101, then the input bit-string is

Detailed Solution for Test: Application Layer Protocols - Question 5

011111 *one zero emitted here* 0101

Test: Application Layer Protocols - Question 6

Which of the following statements is TRUE about CSMA/CD

Detailed Solution for Test: Application Layer Protocols - Question 6

Answer->C
CSMA/CD was used in early days,802.3 not in 802.11
There will be contention in this protocol.
Ethernet is based on csma/cd early in 1980s,

Test: Application Layer Protocols - Question 7

A network has a data transmission bandwidth of 20 x 106  bits per second. It uses CSMA/CD in the MAC layer. The maximum signal propagation time from one node to another node is 40 microseconds. The minimum size of a frame in the network is __________ bytes.


Detailed Solution for Test: Application Layer Protocols - Question 7

Since CSMA/CD
Transmission Delay = RTT
hence,
L=B RTT
L=B 2 Tpropagation delay
L=(20 106) 2 40 10-6
=20 2 40
=1600bits
=200bytes
Hence 200Bytes is the answer.

Test: Application Layer Protocols - Question 8

Assume that "host1.mydomain.dom" has an IP address of 145.128.16.8. Which of the following options would be most appropriate as a subsequence of steps in performing the reverse lookup of 145.128.16.8? In the following options "NS" is an abbreviation of "nameserver".

Detailed Solution for Test: Application Layer Protocols - Question 8

Answer is C)
A & B are clearly wrong as we are doing Reverse lookup.
C is most closest answer to process given in RFC 1033. We need to get NS for in-addr.arpa before doing query to
8.16.128.145.in-addr.arpa
D is not correct, it is not close to process.

Test: Application Layer Protocols - Question 9

Traceroute reports a possible route that is taken by packets moving from some host A to some other host B. Which of the following options represents the technique used by traceroute to identify these hosts

Detailed Solution for Test: Application Layer Protocols - Question 9

A) Traceroute works by sending packets with gradually increasing TTL value, starting with TTL value of 1. The first router receives the packet, decrements the TTL value and drops the packet because it then
has TTL value zero. The router sends an ICMP Time Exceeded message back to the source. The next set of packets are given a TTL value of 2, so the first router forwards the packets, but the second router
drops them and replies with ICMP Time Exceeded. Proceeding in this way, traceroute uses the returned ICMP Time Exceeded messages to build a list of routers that packets traverse, until the destination is
reached and returns an ICMP Echo Reply message

Test: Application Layer Protocols - Question 10

The protocol data unit (PDU) for the application layer in the Internet stack is

Detailed Solution for Test: Application Layer Protocols - Question 10

(C) Message is answer.
For Application, Presentation and Session layers, the PDU is message
For Transport layer, PDU is segment for TCP and datagram for UDP
For Network layer, PDU is packet
For Datalink layer, PDU is frames
For physical layer, PDU is stream of bits

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