Exam 3 Review

Question 2

The _____ portion of an IP address identifies the network to which the host belongs

Answer 2

prefix

Question 3

A VLAN switch that uses a traditional Ethernet protocol allows

Answer 3

• Create a set of separate broadcast domains
• Divide hosts on a single LAN into separate virtual LANs
• Increase the number of possible simultaneous communications between devices

Question 4

The internet is a computer network

Answer 4

True

Question 5

Original datagram is divided into smaller diagrams called ______

Answer 5

fragments

Question 6

The ________ performs a 3-way handshake

Answer 6

TCP

Question 7

What is the name of the packed processed by the UDP?

Answer 7

User Datagram

Question 8

An IP address is divided into ______ and ________

Answer 8

subnet (prefix) and host (suffix)

Question 9

What are the communicating entities at the Transport Layer?

Answer 9

application programs

Question 10

Which of the following best describes the global internet?

Answer 10

It is the global system of interconnected computer networks linking billions of computers world-wide

Question 11

The World Wide Web is a computer network

Answer 11

False

Question 12

Explain why IP datagrams have to be fragmented

Answer 12

Each network technology specifies a Maximum Transfer Unit (MTU), which is the largest amount of data that can be sent in a frame. Because of that, datagram fragmentation is needed whenever size of a datagram exceeds the MTU of a network along the path that the datagram takes from the source to the destination.

Question 13

The two transport layer protocols are

Answer 13

TCP and UDP

Question 14

In addition to Ethernet switches and VLAN switches, the three basic LAN extension technologies are [1], [2], and [3].

Answer 14

1) fiber modems
2) bridges
3) repeaters

Question 15

CIDR notation?

Answer 15

247.172.101.233/20 (the slash)

Question 15

The main purpose of the Transport layer is to

Answer 15

exchange data between applications running on different computers

Question 16

The term WWW and the Internet mean the same thing

Answer 16

False

Question 17

Protocols in the data link (network) layer specify communication between devices residing on

Answer 17

the same (single) LAN

Question 18

What is an example of an address used to forward packets across the Internet?

Answer 18

247.172.101.223 (regular IP address)

Question 19

___________ are inexpensive, but they may amplify noise interference when used to extend the size of a LAN

Answer 19

Repeaters

Question 20

The internet layer provides a ______, which means that a user on any computer in any organization can send messages or data to any other user across the Internet

Answer 20

universal service

Question 21

UDP stands for

Answer 21

User Datagram Protocol

Question 22

The ______ provides best-effort-delivery service

Answer 22

UDP

Question 23

The appropriate protocol for video streaming is

Answer 23

UDP

Question 24

Local topology of the Ethernet is a

Answer 24

bus

Question 25

What is an "address" used at the transport layer

Answer 25

port number

Question 26

TCP stands for

Answer 26

Transmission Control Protocol

Question 27

MTU stands for

Answer 27

Maximum Transfer Unit

Question 28

An internet packer is called an

Answer 28

IP datagram

Question 29

Principal reason for need to use LAN extension technologies

Answer 29

A maximum length specification is a fundamental part of LAN technology and LAN hardware will not work correctly over wires that exceed the bound. Thus, to extend a LAN over a longer distance we may use one of the LAN extension technologies.

Question 30

WWW?

Answer 30

Set of interconnected documents that are accessible through the global internet

Question 31

What is the name of a packet processed by the TCP?

Answer 31

Segment