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Saudi Electronic University IT 210 CHAPTER 19 1)IP is a protocol

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Saudi Electronic University

IT 210

CHAPTER 19

1)IP is a protocol.

A) connection-oriented unreliable B)  connection-oriented  reliable C) connectionless unreliable

D) connectionless reliable

 

2 An HLEN value of decimal 10 means     . A) there are 10 bytes of options

B) there are 10 bytes in the header C) there are 40 bytes of options

D) there are 40 bytes in the header

 

3 If the fragment offset has a value of 100, it means that               . A) the datagram has not been fragmented

B)            the datagram is 100 bytes in size

C)            the first byte of the datagram is byte 800 D) None of the choices are correct

 

4 What is needed to determine the number of the last byte of a fragment? A) offset number

B)            total length

C)            both offset number and the total length D) None of the choices are correct

 

5 The IP header size is    bytes long. A) 20 to 60

B) 20 C) 60

D)           None of the choices are correct

 

 

 

 

 

6 Packets in the IP layer are called            . A) segments

B) datagrams C) frames

D) None of the choices are correct

 

7 The total length field defines the total length of the datagram . A) including the header

B)            excluding the header

C)            excluding the option length

D)           None of the choices are correct

 

8 When a datagram is encapsulated in a frame, the total size of the datagram must be less than the        .

A) MUT B) MAT C) MTU

D) None of the choices are correct

 

9 ICMP is a (an) layer protocol.

A) application-layer protocol that helps TCP/IP at the network layer B) transport-layer protocol that helps TCP/IP at the network layer C) network-layer protocol

D) data-link layer protocol that helps TCP/IP at the network layer

 

10 Which of the following is true about ICMP messages?

A)           An ICMP error message may be generated for an ICMP error message B) An ICMP error message may be generated for a fragmented datagram C) An ICMP error message may be generated for a multicast datagram D) None of the choices are correct

 

 

 

11 When a host moves to a new network, its original address is referred to as

                . A) home

B)            care-of C) foreign

D) None of the choices are correct

 

12 Which of the following addresses are permanent in mobile IP? A) home

B) care-of C) foreign

D) None of the choices are correct

 

13 To communicate with a remote host, a computer needs to go through

                 phase(s). A) one

B) two C) three

D) None of the choices are correct

 

14 In mobile IP communication, the first phase is called  . A) agent discovery

B) registration C) data transfer

D) None of the choices are correct

 

15 In mobile IP communication, the second phase is called           . A) agent discovery

B) registration C) data transfer

D) None of the choices are correct

 

 

 

16 In mobile IP communication, the third phase is called                . A) agent discovery

B) registration C) data transfer

D) None of the choices are correct

 

17 In mobile IP communication, inefficiency in triangle routing is                the one in double crossing.

A) more severe than B) less severe than

C)            in the same level as

D)           None of the choices are correct