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1 | |
For purposes of routing, the Internet is divided into ___________. |
| | A) | wide area networks |
| | B) | autonomous networks |
| | C) | autonomous systems |
| | D) | None of the choices are correct |
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2 | |
Routing inside an autonomous system is referred to as ________ routing. |
| | A) | interdomain |
| | B) | intradomain |
| | C) | out-of-domain |
| | D) | None of the choices are correct |
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3 | |
Routing between autonomous systems is referred to as ______ routing. |
| | A) | interdomain routing |
| | B) | intradomain routing |
| | C) | out-of-domain |
| | D) | None of the choices are correct |
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4 | |
In _______ routing, the least cost route between any two nodes is the route with the minimum distance. |
| | A) | path vector |
| | B) | distance vector |
| | C) | link state |
| | D) | None of the choices are correct |
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5 | |
In ________, each node maintains a vector (table) of minimum distances to every node. |
| | A) | path vector |
| | B) | distance vector |
| | C) | link state |
| | D) | None of the choices are correct |
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6 | |
In distance vector routing, each node periodically shares its routing table with _________ and whenever there is a change. |
| | A) | every other node |
| | B) | its immediate neighbors |
| | C) | one neighbor |
| | D) | None of the choices are correct |
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7 | |
The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing. |
| | A) | distance vector |
| | B) | link state |
| | C) | path vector |
| | D) | None of the choices are correct |
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8 | |
The metric used by _______ is the hop count. |
| | A) | OSPF |
| | B) | RIP |
| | C) | BGP |
| | D) | None of the choices are correct |
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9 | |
In RIP, the ________ timer controls the advertising of regular update messages. |
| | A) | garbage collection |
| | B) | expiration |
| | C) | periodic |
| | D) | None of the choices are correct |
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10 | |
In RIP, the ________ timer is used to purge invalid routes from the table. |
| | A) | garbage collection |
| | B) | expiration |
| | C) | periodic |
| | D) | None of the choices are correct |
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11 | |
In RIP, the ________ timer controls the validity of the route. |
| | A) | garbage collection |
| | B) | expiration |
| | C) | periodic |
| | D) | None of the choices are correct |
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12 | |
RIP uses the services of _______. |
| | A) | TCP |
| | B) | UDP |
| | C) | IP |
| | D) | None of the choices are correct |
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13 | |
The _________ routing uses the Dijkstra algorithm to build a routing table. |
| | A) | distance vector |
| | B) | link state |
| | C) | path vector |
| | D) | None of the choices are correct |
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14 | |
The Open Shortest Path First (OSPF) protocol is an intradomain routing protocol based on _______ routing. |
| | A) | distance vector |
| | B) | link state |
| | C) | path vector |
| | D) | None of the choices are correct |
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15 | |
The _______ protocol allows the administrator to assign a cost, called the metric, to each route. |
| | A) | OSPF |
| | B) | RIP |
| | C) | BGP |
| | D) | None of the choices are correct |
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16 | |
In OSPF, a ________ link connects two routers without any other host or router in between. |
| | A) | point-to-point |
| | B) | transient |
| | C) | stub |
| | D) | None of the choices are correct |
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17 | |
In OSPF, a _______ link is a network with several routers attached to it. |
| | A) | point-to-point |
| | B) | transient |
| | C) | stub |
| | D) | None of the choices are correct |
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18 | |
In OSPF, a ________ link is a network is connected to only one router. |
| | A) | point-to-point |
| | B) | transient |
| | C) | stub |
| | D) | None of the choices are correct |
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19 | |
In OSPF, when the link between two routers is broken, the administration may create a _________ link between them using a longer path that probably goes through several routers. |
| | A) | point-to-point |
| | B) | transient |
| | C) | stub |
| | D) | None of the choices are correct |
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20 | |
In OSPF, a ________ defines the links of a true router. |
| | A) | network link |
| | B) | router link |
| | C) | summary link to network |
| | D) | None of the choices are correct |
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21 | |
In OSPF, a ________ defines the links of a network. |
| | A) | network link |
| | B) | router link |
| | C) | summary link to network |
| | D) | None of the choices are correct |
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22 | |
In OSPF, an area border router advertises a ____________ LSA. |
| | A) | network link |
| | B) | router link |
| | C) | summary link to network |
| | D) | None of the choices are correct |
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23 | |
OSPF uses the _______ message to create neighborhood relationships and to test the reachability of neighbors. |
| | A) | link state request |
| | B) | database description |
| | C) | link state update |
| | D) | None of the choices are correct |
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24 | |
In OSPF, the ________ message does not contain complete database information; it only gives an outline, the title of each line in the database. |
| | A) | link state request |
| | B) | database description |
| | C) | link state update |
| | D) | None of the choices are correct |
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25 | |
In OSPF, a _________ message is sent by a router that needs information about a specific route or routes. |
| | A) | link state request |
| | B) | database description |
| | C) | link state update |
| | D) | None of the choices are correct |
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26 | |
In ________ routing, we assume that there is one node (or more) in each autonomous system that acts on behalf of the entire autonomous system. |
| | A) | distant vector |
| | B) | path vector |
| | C) | link state |
| | D) | None of the choices are correct |
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27 | |
___________ is an interdomain routing protocol using path vector routing. |
| | A) | BGP |
| | B) | RIP |
| | C) | OSPF |
| | D) | None of the choices are correct |
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28 | |
BGP can have two types of sessions: _______ and ________ sessions. |
| | A) | E-BGP; A-BGP |
| | B) | I-BGP; C-BGP |
| | C) | E-BGP; I-BGP |
| | D) | None of the choices are correct |
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29 | |
To create a neighborhood relationship, a router running BGP sends a(n) ________ message. |
| | A) | open |
| | B) | update |
| | C) | keepalive |
| | D) | None of the choices are correct |
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30 | |
In BGP, the _______ message is used by a router to withdraw destinations that have been advertised previously, or to announce a route to a new destination, or both. |
| | A) | open |
| | B) | update |
| | C) | keepalive |
| | D) | None of the choices are correct |
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31 | |
The routers running the BGP protocols exchange _______ messages regularly to tell each other that they are alive. |
| | A) | open |
| | B) | update |
| | C) | keepalive |
| | D) | None of the choices are correct |
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32 | |
In BGP, a(n) _______ message is sent by a router whenever an error condition is detected or a router wants to close the connection. |
| | A) | open |
| | B) | update |
| | C) | keepalive |
| | D) | None of the choices are correct |
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33 | |
BGP messages are encapsulated in _______. |
| | A) | TCP segments |
| | B) | UDP user datagrams |
| | C) | IP datagrams |
| | D) | None of the choices are correct |
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34 | |
An area is _______. |
| | A) | part of an AS |
| | B) | composed of at least two ASs |
| | C) | another term for an AS |
| | D) | None of the choices are correct |
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