1A Review Questions

Question 1

Define an internetwork

Answer 1

A collection of individual networks, connected by internetworking devices that function as a single large network.

Question 2

What are the four common challenges to internetworks?

Answer 2

Connectivity, reliable service, network management, flexibility

Question 3

A portion of the network, limited by its router connection to a specific group of host computers in a common LAN segment is called a?

Answer 3

Broadcast Domain

Question 4

In the context of data networking, a _______ is a formal set of rules and conventions that governs how computers and other network entities exchange information over a network medium.

Answer 4

Protocols

Question 5

What type of address is commonly referred to as the virtual or logical address? Provide an example

Answer 5

Network Addresses, 172.—.—.—

Question 6

How many network layer addresses do routers require?

Answer 6

One per interface enabled for each net protocol used.

Question 7

What types of protocols are responsible for providing logical addressing routers to use to determine where to send a data packet to the destination network?

Answer 7

Routed Protocols

Question 8

____ is the primary routed network layer protocol and is considered the heart of Internet protocols

Answer 8

IP

Question 9

List the two primary responsibilities of IP?

Answer 9

Providing a connectionless, best effort delivery of packets through an internetwork based on logically assigned addresses; and providing fragmentation and reassembly of packets to support data links with different maximum transmission unit sizes

Question 10

Which protocol is used to Map IP network addresses to Media Access Control addresses?

Answer 10

Address Resolution Protocol (ARP)

Question 11

A network layer protocol that is used to send packets, which act as keep-alives, between routers is called?

Answer 11

Hello Protocols

Question 12

_______ is a network layer internet protocol that provides message packets to report errors and other information regarding IP packet processing back to the source.

Answer 12

The Internet Control Message Protocol (ICMP)

Question 13

Explain the differences between routing protocols and routed protocols.

Answer 13

Routed- Encapsulates and packages packets, Routing- The actual delivery and building of tables.

Question 14

A collection of networks under a common administration that share a common routing strategy is called an?

Answer 14

Autonomous System

Question 15

List 4 examples of Interior Gateway Protocols.

Answer 15

RIP, IGRP, EIGRP, and OSPF

Question 16

Define the term default gateway.

Answer 16

An IP address on a layer 3 that serves as an access point either coming in or going out.

Question 17

The act of moving information across a packet switching internetwork from a source to a destination is called?

Answer 17

Routing

Question 18

List two major Functions of a router?

Answer 18

Path Determination, and Packet Switching

Question 19

The results of routers algorithmic calculations of available network paths and their associated metric costs are listed in the?

Answer 19

Routing Tables

Question 20

A router can discard a packet by use of an ________ if it does not meet certain criteria statements.

Answer 20

ACL

Question 21

List the external components and their purpose.

Answer 21

Console Port- Allows local configuration
Aux Port- Configure Remotely
Network Interfaces- Connection to a LAN, Remote Admin