Deck 9: Routing

Question 1

Routing is the process of _____.

A)selecting information paths from the source network to the destination network
B)directing end users to their user stations in the office
C)directing network traffic around defective routers
D)None of the above

Answer 1

A

Question 2

Route aggregation _____.

A)deletes unused destination addresses from the routing table
B)combines multiple smaller IP address blocks into one larger IP address block
C)increases the size of routing tables
D)slows down routing

Answer 2

B

Question 3

Routing tables maintain routes as _____.

A)a sequence of IP addresses
B)a sequence of router IDs
C)a sequence of URLs
D)a sequence of AS numbers

Answer 3

D

Question 4

Routing protocols are the mechanisms used by routers to _____.

A)deliver data over the cables
B)resolve host names to IP addresses
C)maintain routing tables
D)speed up routing

Question 5

The basic unit of Internet routing is _____.

A)an autonomous system
B)a switch
C)a host
D)a router

Question 6

An autonomous system _____.

A)transfers data to a neighboring AS for delivery to the destination
B)assists neighboring routers in locating destination hosts
C)operates independently of the Internet
D)is responsible for delivering data to hosts within the AS

Question 7

Routers connect _____.

A)two or more networks
B)two or more hosts
C)two or more users
D)two or more applications

Question 8

A router has two or more _____.

A)network administrators
B)IP addresses
C)hosts
D)switches

Question 9

An autonomous system is _____.

A)another name for a router
B)a collection of switches
C)a collection of routers under one administrative entity
D)a collection of end users

Question 10

The most popular exterior routing protocol is _____.

A)address resolution protocol ARP)
B)open shortest path first protocol OSPF)
C)dynamic host control protocol DHCP)
D)border gateway protocol BGP)

Question 11

A routing table is a table stored in a router which keeps track of _____.

A)all known paths to neighboring networks
B)the best paths to neighboring networks
C)all known paths to destination networks
D)the best paths to destination networks

Question 12

A router is responsible for forwarding data packets to _____.

A)a suitable neighboring router
B)the final destination
C)any neighboring router
D)None of the above

Question 13

The most popular interior routing protocol is _____.

A)open shortest path first protocol OSPF)
B)address resolution protocol ARP)
C)dynamic host control protocol DHCP)
D)border gateway protocol BGP)

Question 14

To reduce broadcasts in a LAN,the most suitable device is a _____.

A)hub
B)router
C)CAT 5 cable
D)switch

Question 15

A routing metric for a route is a measure of _____.

A)the cost of building the network route
B)the cost of sending packets through the route
C)the cost of operating the network route
D)the rental fee for using the network route

Question 16

In interior routing protocols,routers typically exchange routing information with _____.

A)all routers on the network
B)only the neighboring routers
C)only routers outside the network
D)None of the above

Question 17

Each autonomous system is identified by _____.

A)its MAC address
B)its AS number
C)its IP address
D)its host name

Question 18

Compared to routers,switches typically cannot _____.

A)locate the destination host on the network
B)transfer data
C)select the correct path from multiple available paths
D)handle broadcasts

Question 19

In exterior routing protocols,routers typically exchange routing information with _____.

A)all routers on the network
B)only the neighboring routers
C)only routers within the AS
D)None of the above

Question 20

Broadcast is used to transfer data across the Internet.

Question 21

All of the following are advantages of route aggregation except _____.

A)it can speed up routing
B)it reduces the size of routing tables
C)it reduces the number of hops required to reach a destination
D)it can simplify network administration

Question 22

If two /16 IP address blocks are aggregated,the aggregated block will be a _____.

A)/14 address block
B)/16 address block
C)/17 address block
D)/15 address block

Question 23

A forwarding equivalence class is _____.

A)a new kind of address class used in large networks
B)a mechanism to treat all networks as equivalent to each other
C)a group of IP packets treated similarly in the network
D)None of the above

Question 24

MPLS stands for _____.

A)multi-protocol label switching
B)multi-party live service
C)multi-protocol live service
D)multi-party label switching

Question 25

In MPLS,packets are delivered based on _____.

A)IP destination addresses
B)pre-defined labels
C)port addresses
D)the location of switches