Question

Question 34

1. A TCP socket contain …………………… that uniquely identifies it on a network
   1. TCP ID
   2. Port number
   3. UDP
   4. HTTP

( )		a
( )		b
( )		c
( )		d

2 points

Question 35

1. Mail server port number is usually
   1. 8080
   2. 80
   3. 2525
   4. 25

( )		a
( )		b
( )		c
( )		d

2 points

Question 36

1. TCP Head length indicates

( )		The size of the segment
( )		The capacity of data that can be sent
( )		Capacity of data that can be received
( )		The size of the segment header

2 points

Question 37

1. One of these DNS domain does not belong to the hierarchical and the 3 tier architecture
   1. Top level Domain Name server
   2. Root Name Server
   3. Local Name server
   4. Authoritative name server

( )		a
( )		b
( )		c
( )		d

2 points

Question 38

1. If TCP sequence number is 42, this means

( )		42 is the port number
( )		sequence number identifies the beginning sequence of a segment
( )		sequence number identifies the end sequence of a segment
( )		The sequence in an acknowledgeable data

2 points

Question 39

1. UDP delivers data reliably using

( )		UDP port number
( )		Best effort service of Network layer
( )		UDP bare bone
( )		UDP special segment

2 points

Question 40

1. ………………………………. Initiate communication
   1. Server process
   2. Routers shortest path algorithm
   3. Client process
   4. DNS

( )		a
( )		b
( )		c
( )		d

2 points

Question 41

1. If the acknowledged field and the sequence field of a server contains the value 76 and 54 respectively, what will be the sequence and acknowledged field of the next stream from the client.

Sequence is 76

Acknowledgement is 55

( )		Sequence is 55 Acknowledgement is 76
( )		Sequence is 77 Acknowledgement is 54
( )		Sequence is 76 Acknowledgement is 55
( )		Sequence is 76 Acknowledgement is 54

2 points

Question 42

1. A property of the TCP that ensures server is not overwhelmed is
   1. Connection-oriented
   2. Reliability
   3. Flow control
   4. Security

( )		a
( )		b
( )		c
( )		d

2 points

Question 43

1. TCP process may not write and read data at the same speed. So we need __________ for storage.

( )		Buffers
( )		stacks
( )		Urgent Data pointer
( )		Packets

2 points

Question 44

1. The standard and generally agreed document for protocol definition is called
   1. Standard document for protocol definition
   2. Request for Comment
   3. Reliable functional communication
   4. Proprietary protocol

( )		a
( )		b
( )		c
( )		d

2 points

Question 45

1. Which of these components run application layer protocol
   1. Router
   2. DSL modem
   3. Cable Modem
   4. Palm top

( )		a
( )		b
( )		c
( )		d

2 points

Question 46

1. Pick the field that is a  not flag

( )		Finish field
( )		Synchronization field
( )		Push field
( )		Sequence field

2 points

Question 47

1. Application layer offers _______ service

( )		End to end service
( )		process to process service
( )		None mentioned
( )		routing services

2 points

Question 48

1. One of these services is not provided by the Transport layer

( )		Connection setup
( )		Delay guarantees
( )		flow control
( )		congestion control

2 points

Question 49

1. A socket is described to be analogous to ………………………
   1. Service layer
   2. Door
   3. Tunnel
   4. Program that renders application to users

( )		a
( )		b
( )		c
( )		d

2 points

Question 50

1. Method(s) to move data through a network of links and switches

( )		Packet and circuit switching
( )		circuit switching only
( )		SMTP
( )		None mentioned

2 points

Question 51

1. Pick the odd one out

( )		interactive game
( )		Voice over IP
( )		Online video
( )		Email

2 points

Question 52

1. In a DNS resource record, type A record contains name and ………………………….
   1. Value of IP address
   2. Location of IP address
   3. Get message
   4. Position of response message

( )		a
( )		b
( )		c
( )		d

2 points

Answer 1

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35) Mail server port number is usually 25
36) TCP Head length indicates The size of the segment header
37)One of these DNS domains does not belong to the hierarchical and the 3 tier architecture Authoritative name server
38) If the TCP sequence number is 42, this means sequence number identifies the beginning sequence of a segment