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Block 7 Routers > 2A Review Questions > Flashcards

2A Review Questions Flashcards

1
Q

What types of routes are designed to work well where network traffic is extremely predictable and network design is relatively simple?

A

Static Routes

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2
Q

______ Routes use algorithms to build and maintain routing tables that adjust to changing topology.

A

Dynamic Routes

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3
Q

Protocols such as RIP, IGRP, EIGRP, OSPF and BGP are classified as?

A

Dynamically Learned Routes

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4
Q

Refers to the available traffic capacity of a link?

A

Bandwidth

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5
Q

Refers to the length of time required move a packet from source to destination through the internetwork.

A

Delay

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6
Q

Some companies may not care about performance as much as they care about operating expenditures.

A

Communication Cost

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7
Q

The most common routing Metric.

A

Path Length AKA Hop Count

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8
Q

Refers to the dependability of each network link.

A

Reliability

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9
Q

Refers to the Degree to which a network resource, such as a router, is busy

A

Load

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10
Q

What is meant by the term classless routing?

A

That it is a hierarchical algorithms structure and its supports Variable Length Subnet Masks (VLSM)

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11
Q

Which classification of algorithm is used with Interior Gateway Protocols?

A

Intra-Domain

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12
Q

Distance vector algorithms build routing tables by using ______ messages to and from their neighbors only.

A

Broadcast Routing Update

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13
Q

A disadvantage of distance vector algorithms is they are limited by ___________ making them unusable for large networks.

A

Hop Count

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14
Q

Which algorithm sends multicast messages to notify routers about the status of their connect links?

A

Link State

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15
Q

What are three classes of routing protocols?

A

Distance Vector, Link State, Balanced Hybrid

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16
Q

Which is considered a pure distance vector protocol?

A

RIP

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17
Q

What is the algorithm used by OSPF?

A

Shortest Path First

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18
Q

What responsibility does the “backbone” have is OSPF?

A

For distributing routing info In-between areas

19
Q

OSPF uses the _____ protocol during initialization to acquire neighbors.

20
Q

The _______ is responsible for generating link state advertisments for an entire area so only one router is responsible for sending out multicast messages.

A

Designated Router

21
Q

How often does OSPF send out Multicast update messages?

A

Every 30 min or when there is a change.

22
Q

EIGRP is often referred as a_______ protocol.

A

Balanced Hybrid

23
Q

When does EIGRP send multicast update messages?

A

Only when there is a topology change.

24
Q

Name there key technologies that are used by EIGRP.

A

Neighbor Discover/Recovery, Reliable Transport Protocol (RTP), and DUAL Finite-state machine`

25
Q

________ sends small “hello” packets to establish communication with neighboring routers.

A

Neighbor Discovery/Recovery

26
Q

Which key technology is responsible for the Guaranteed, ordered delivery of certain EIGRP packets?

A

RTP (reliable transfer protocol)

27
Q

Wha algorithm does EIGRP use for route determination?

28
Q

What EIGRP key technology is responsible for calculating “successors” and “feasible successors”?

29
Q

A______ is the best. least cost path to a destination and is copied to the routing table.

30
Q

The _________ contains all destinations advertised by neighboring routers.

A

Topology Tables

31
Q

What is administrative distance?

A

Measure of trust worthiness

32
Q

When is administrative distance used?

A

When more than one path to a destination exists.

33
Q

Which protocol path would be used is OSPF and EIGRP both provided a path to the same destination?

A

EIGRP because its a CISCO proprietary

34
Q

What type of protocol is used to communicate between autonomous systems?

A

Exterior Gateway Protocol

35
Q

How often does BGP send updates to other BGP routers?

A

Only when triggered by a topology change.

36
Q

How does BGP discover its neighbor routers?

A

Must be manually configured by the admin

37
Q

Access lists provide the basic level of _____ for networks

38
Q

List the statement options that can be used with an access list?

A

Permit and Deny

39
Q

Every access list acting as a packet filter must have a least one what?

40
Q

In which direction can access lists be applied to an interface using TCP/IP?

A

One per protocol per direction

41
Q

What happens if a packet does not match any of the test conditions of the access list?

A

Discarded or destroyed

42
Q

All access list end with

A

Implicit Denial

43
Q

A standard access list is applied as an “access-class” to prevent which type of entry into the router?

A

Unauthorized access into Telnet

Block 7 Routers (4 decks)

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