Week 9

Question 1

The “ping” applicatyion on windows uses ICMP echo request/reply

Answer 1

True

Question 2

For a TCp/IP datagram coming into a home network through a NAPT device, which of the following header fields IP and/or TCP are altered?

Answer 2

Header checksum, Destination port, Destination IP address

Question 3

In a prefix matching network, a routing table stores…

Answer 3

Next hop information, IP prefixes

Question 4

NAPT devices translate IP address and port numbers (T/F)

Answer 4

True

Question 5

It is the responsibility of a routing algorithm to determine the cost of an output link (T/F)

Answer 5

False

Question 6

It is the responsibility of a routing algorithm to determine a datagrams next hop information (T/F)

Answer 6

True

Question 7

Network address translation has ameliorated the IP address shortage problem (T/F)

Answer 7

True

Question 8

If hosting a server inside a NATed network, how do clients outside the NAPT router connect to the server

Answer 8

NAPT devices IP address and a port number pre configured to go to th seerver
Plug and Play device (UPnP)
Through a connection relay service

Question 9

Select all features explicitly availabe in IPv6 which were already availabele in IPv4

Answer 9

Traffic Type, Version, Hop Limit, Source/Dest addressing

Question 10

In IPv6 there is no datagram fragmentation performed in the network core (T/F)

Answer 10

True

Question 11

IPv6 datagrams cannot be converted into IPv4 datagrams without losing any information (T/F)

Answer 11

True

Question 12

The UPv6 header does not have a checksum (T/F)

Answer 12

True

Question 13

Convert the following IPv4 address to its coresponding IPv6 mapped address: 114.18.222.10

Answer 13

::ffff:7212:de0a

Question 14

1234::a03:abcd is a valid prefered form IPv6 address (T/F)

Answer 14

True

Question 15

::ffff:ffff:fffff is a valid perfered form IPv6 address (T/F)

Answer 15

False

Question 16

A MAC address is permenent and unique (T/F)

Answer 16

False

Question 17

It is fairly easy to detect collisions in wired networks (T/F)

Answer 17

True

Question 18

There are reserved MAC addresses unusable for devices (T/F)

Answer 18

True

Question 19

Star ethernet uses the same multiple access control as bus ethernet (T/F)

Answer 19

False

Question 20

The data link layer provides logical communications between ______ and _____

Answer 20

adjacent node, adjacent node

Question 21

Select all channel partitioning schemes below

Answer 21

FDMA, WDMA, TDMA

Question 22

A link layer between only two adjacent nodes is called a/an:

Answer 22

point to point link

Question 23

Select all random access schemes below

Answer 23

ALOHA, CSMA

Question 24

A multiple access scheme which listens to the channel to make sure it is empty peior to transmitting is called:

Answer 24

Carrier sense protocol

Question 25

A network with a ____topology must terminate the endpoints but in a ____topology they are connected so there is no endpoint

Answer 25

Star, Ring

Question 26

Ethernet provides error detection via:

Answer 26

CRC check

Question 27

Multiple access scheme which divides the usable medium into chunks and allows each device sole access to some number of chunks:

Answer 27

channel partitioning protocol

Question 28

On the sending or receiving host, most of the protocol tasks below the application layer of the protocol stack are handled by

Answer 28

NIC Network interface controller

Question 29

In random access multiple access schemes no two nodes will transmit at the same time (T/F)

Answer 29

False

Question 30

Given the following received byte on an even parity machine, there is definitely at least one error 01001101 (T/F)

Answer 30

False

Question 31

A switch is a network layer device

Answer 31

False