Deck 9: Networking and Transport Layer Protocols: OSPF IPV6, and UDP

Question 1

Which of the following is not a type of OSPF packet?

A)hello
B)link-state request
C)link-state response
D)link-state ack

Answer 1

link-state response

Question 2

In OSPF header, which field is used to detect errors in the packet?

A)type
B)area id
C)authentication type
D)checksum

Answer 2

checksum

Question 3

In OSPF database descriptor packet, if there are more database descriptor packets in the flow, 'M' field is set to                          

A)1
B)0
C)more
D)-1

Answer 3

1

Question 4

In OSPF database descriptor packet, which field is used to indicate that the router is master?

A)m
B)ms
C)i
D)options

Question 5

In OSPF database descriptor packet, which field is used to detect a missing packet?

A)lsa header
B)ms
C)database descriptor sequence number
D)options

Question 6

The header length of an IPv6 datagram is

A)10bytes
B)25bytes
C)30bytes
D)40bytes

Question 7

In the IPv6 header, the traffic class field is similar to which field in the IPv4 header?

A)fragmentation field
B)fast-switching
C)tos field
D)option field

Question 8

Which among the following features is

A)hop limit
B)ttl
C)next header
D)type of traffic

Question 9

Dual-stack approach refers to                    

A)implementing ipv4 with 2 stacks
B)implementing ipv6 with 2 stacks
C)node has both ipv4 and ipv6 support
D)implementing a mac address with 2 stacks

Question 10

The------------field determines the lifetime of IPv6 datagram

A)use dual-stack approach
B)tunneling
C)no solution
D)replace the system

Question 11

Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits              

A)96 to 127
B)0 to 63
C)80 to 95
D)64 to 79

Question 12

Which one of the following is a version of UDP with congestion control?

A)datagram congestion control protocol
B)stream control transmission protocol
C)structured stream transport
D)user congestion control protocol

Question 13

2 USER DATAGRAM PROTOCOLS (UDP)

A)connection-oriented
B)unreliable
C)transport layer protocol
D)low overhead

Question 14

Return value of the UDP port "Chargen" is

A)string of characters
B)string of integers
C)array of characters with integers
D)array of zero's and one's

Question 15

What is the main advantage of UDP?

A)more overload
B)reliable
C)low overhead
D)fast

Question 16

The port number is "ephemeral port number", if the source host is                

A)ntp
B)echo
C)server
D)client

Question 17

"Total length" field in UDP packet header is the length of                    

A)only udp header
B)only data
C)only checksum
D)udp header plus data

Question 18

Which is the correct expression for the length of UDP datagram?

A)udp length = ip length - ip header's length
B)udp length = udp length - udp header's length
C)udp length = ip length + ip header's length
D)udp length = udp length + udp header's length

Question 19

The-------------- field is used to detect errors over the entire user datagram.

A)udp header
B)checksum
C)source port
D)destination port