IS 3120 CHAPTER 11

Question 1

A grouping of connected IP networks that are managed, maintained, and controlled by a common administrator.

Answer 1

Autonomous system (AS).

Question 2

An exterior hybrid routing protocol that routes messages between networks and AS.

Answer 2

Border Gateway Protocol (BGP)

Question 3

A relative metric value used to set the condition of comparison.

Answer 3

Cost

Question 4

.

Answer 4

Delay

Question 5

A type of routing protocol that maintains a routing tale containing route metrics provided by neighboring routers on which routing decisions are made.

Answer 5

Distance-vector routing protocol

Question 6

Using links determined by a routing protocol through information from other routers.

Answer 6

Dynamic routing

Question 7

A hybrid interior routing protocol that combines the shortest-path considerations of a link-state routing protocol with the metrics of IGRP.

Answer 7

Enhanced Interior Gateway Routing Protocol (EIGRP)

Question 8

A protocol that routes messages outside an AS or between two networks.

Answer 8

Exterior routing protocol

Question 9

A period of time during which a particular path is suspended.

Answer 9

Hold-down

Question 10

The number of routers a packet must pass through to reach the network of its destination address.

Answer 10

Hop count (hops)

Question 11

An interior distance-vetor routing protocol that exchanges routing information with other routers within its AS.

Answer 11

Interior Gateway Routing Protocol (IGRP)

Question 12

Protocols that perform routing functions among the routers owned by a single entity or under the control of a single network administrator.

Answer 12

Interior routing protocols

Question 13

A type of routing protocol that calculates the status (state) of a link and its connection type, speed, and delay.

Answer 13

Link-state routing protocol

Question 14

The amount of bandwidth in use on a particular link.

Answer 14

Load

Question 15

Routing protocols that divide message traffic over two or more links.

Answer 15

Load balancing

Question 16

The length in bytes of the longest message unit that can be transmitted on available links that connect a source address to a destination address.

Answer 16

Maximum transmission unit (MTU)

Question 17

Refers to a device with connections to multiple links.

Answer 17

Multi-homed

Question 18

Prevents information from a particular interface from being repeated to that interface.

Answer 18

Poisoned reverse

Question 19

A measurement of the amount of downtime on a particular link that indicates the reliability of the link. An indicator of how likely a link is to fail during transmission.

Answer 19

Reliability

Question 20

Another term for redundancy or failover; specifically, a condition in which a network can “bounce back” from failures because its Physical Layer media, Layer 2 network access functions, and Layer 3 forwarding and addressing functions have ho-swap redundancy.

Answer 20

Resilience

Question 21

Protocols that define the formatting and structure of data being routed.

Answer 21

Routed protocols

Question 22

An interior distance-vector routing protocol that uses hop count as its routing metric.

Answer 22

Routing Information Protocol (RIP)

Question 23

Communicates with other routers to maintain routing information with which path determination can be made.

Answer 23

Routing protocols

Question 24

Maintained by a routing protocol to store metric about the addresses available through each interface port of a router.

Answer 24

Routing tables

Question 25

A feature or distance-vector routing protocol that prevents reverse routes between two routers and helps devices direct packets around loops.

Answer 25

Split horizon

Question 26

Using fixed links configured manually.

Answer 26

Static routing

Question 27

An IEEE standard redundancy protocol that clusters multiple routers into a single virtual router.

Answer 27

Virtual Router Redundancy Protocol (VRRP)

Question 28

1. Which of the following is/are Layer 3 functions or services? 1. Logical link management 2. Logical addressing 3. Physical addressing 4. Frame encapsulation

Answer 28

Logical addressing

Question 29

2. Routing occurs on the ___ Layer of the OSI Reference Model. 1. Data Link 2. Transport 3. Network 4. Session

Answer 29

Network

Question 30

3. A routing protocol maintains a routing table on which path determination is based. TRUE OR FALSE

Answer 30

TRUE

Question 31

4. Which routing protocol is used to route traffic on the Internet? 1. OSPF 2. BGP 3. RIPv2 4. EIGRP

Answer 31

BGP

Question 32

5. The two forms of routing entries are dynamic and ___. 1. Logical 2. Metric 3. Multi-homed 4. Static

Answer 32

Static

Question 33

6. Which one of the following is a routed protocol? 1. RIP 2. SMTP 3. OSPF 4. IGRP

Answer 33

SMTP

Question 34

7. The routing metric that indicates the number of intermediary routers a packet must pass through to reach the network of its destination address is called the ___. 1. Delay 2. Hop count 3. Cost 4. Load

Answer 34

Hop count

Question 35

8. The bandwidth of a link is never used as a routing metric. TRUE OR FALSE

Answer 35

FALSE

Question 36

9. The condition that exists when the routing tables of neighboring routers are in synchronization is called ___. 1. Resiliency 2. Convergence 3. Confluence 4. Balance

Answer 36

Convergence

Question 37

10. The action in which a router divides and forwards incoming or outbound message traffic to multiple links is known as ___. 1. Convergence 2. Resilience 3. Redundancy 4. Load balancing

Answer 37

Load balancing

Question 38

11. The two types of dynamic routing protocols are link-sate and distance-vector. TRUE OR FALSE

Answer 38

TRUE

Question 39

12. The length of the longest data unit that can be transmitted on an available link is the ___. 1. Hash count 2. Maximum transmission unit 3. Distance-vector 4. Link-state

Answer 39

Maximum transmission unit

Question 40

13. Which distance-vector routing protocol bases its routing decisions solely on hop count? 1. OSPF 2. EIGRP 3. RIP 4. BGP

Answer 40

RIP

Question 41

14. What methodology is used on networks to prevent routing loops? 1. Resilience 2. Split horizon 3. Redundancy 4. Spanning tree

Answer 41

Redundancy

Question 42

15. HSRP is a routing protocol that can be used to configure resilience on a network. TRUE OR FALSE

Answer 42

TRUE