Ccna Card Set 2

Front 1

What commands could you use to have a gateway router allow internet acces to the entire network?

Back 1

Gateway(config)#ip route 0.0.0.0 0.0.0.0 206.143.5.2
Gateway(config)#ip default-network 206.143.5.0
0.0.0 0.0.0.0 and exit the inerface instead of the next hop.

Front 2

What is a split horizon?

Back 2

Informaiton about a route should not be sent back in the direction from which the original update came.

Front 3

What ICMP message would a distant router send if a distant host is trying to reach one of it's local hosts but the router's interface is down?

Back 3

The router would use an ICMP destination unreachable message to inform the distant host that the local host cannot be reached.

Front 4

what command displays RIP routing updates?

Back 4

debug ip rip

Front 5

What do holddown timers do?

Back 5

Allow time for a network to become stable in the case of a flapping link

Front 6

If "debug ip rip" on your router counsole shows that 172.16.10.0 is being advertised with a metric of 16, what does it mean?

Back 6

The metric indicates hops. RIP cannot have 16 hops by default so this message means the address is inaccessible

Front 7

What could cause a route on the routing table to not be shared with other routers?

Back 7

If a route already has 15 hops it won't be shared because then it would have 16 hops on the other router, which RIP doesn't allow

Front 8

What is route poisoning?

Back 8

It describes when a router sets the metric for a downed link to infinity. Used to avoid problems caused by inconsistent updates and to stop network loops. Route poisoning is done by the distance-vector routing protocol.

Front 9

What do RIPv1 and RIPv2 have in common?

Back 9

RIPv2 is pretty much just like RIPv1. It ahs the same admin distance, timers, and is configured the same. RIPv2 supports classless routing by sending subnets, unlike RIPv1, and uses multicasts rather than broadcasts

Front 10

What protocol does EIGRP use to manage communication of messages between EIGRP routers?

Back 10

RTP

Front 11

What are the three tables EIGRP use and what is the purpose of each?

Back 11

Neighborship table, records information about neighbor routers
Topology table, stores route advertisements about every route in the internetwork received from each neighbor
Route table, stores the routes that are currently used to make routing decisions

Front 12

What are the ranges of OSPF process identifiers and area numbers? Which one does not have to be consistent with other routers?

Back 12

Process ID 1-65,535, need not be consitent
area numbers 0 to 4.2 billion, must be consistent

Front 13

Which OSPF area is the backbone area?

Back 13

Area 0

Front 14

Is OSPF a distance-vector or a link-state protocol? How about EIGRP?

Back 14

Link-state, EIGRP is hybrid but mostly distance-vector

Front 15

What are the default hello and dead timers in OSPF? What happens if they don't match between routers?

Back 15

10 for hello, 40 for dead
If they don't match no adjecency relationship will be formed.

Front 16

What is the multicast IPv6 OSPFv3 addresses?

Back 16

FF02::5
FF02::6

Front 17

What is the multicast addresses for RIPng?

Back 17

FF02::9

Front 18

What multicast addresses does EIGRPv6 use?

Back 18

FF02::A

Front 19

Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?

Back 19

fame-relay map

Front 20

Which data link layer encapsulation services multiple virtual circuits and protocols between connected mechanisms?

Back 20

Frame Relay

Front 21

Define these acronyms: DLCI, LMI, PVC

Back 21

DLCI: Daata link connection identifyer, used to identify virtual circuits in a fram relay network
LMI: Local management interface, an enhancement to original frame relay
PVC: permenant (as opposed to switched) virtual circuit

Front 22

Is Frame Relay multi-point or multi-access?

Back 22

Frame relay is a Non-broadcast multi-access (NBMA)

Front 23

When would you use this command: encapsulation frame-relay ietf?

Back 23

When you are configuring a router for a frame relay connection to a non-cisco router.

Front 24

Between HDLC, Frame Relay, and PPP which supports dynamic addressing, authentication using PAP or CHAP, and callback services?

Back 24

PPP

Front 25

Name two WAN encapuslations that can be configured on an asynchronous serial connection?

Back 25

ATM, PPP

Front 26

What connection type uses ATM as the Data Link layer protocol that's terminated as the DSLAM?

Back 26

DSL

Front 27

In the Setup dialog, what do the square brackets ([]) indicate?

Back 27

Default settings

Front 28

What router component store routing tables?

Back 28

DRAM

Front 29

What version is the default version of RIP and what must you specifiy in it?

Back 29

Rip v1, you must specify all directly connected networks

Front 30

What does Cisco use to identify frames as they travers a switched VLAN fabric?

Back 30

Cisco uses the protocol Inter-Switch Link (ISL) for frame tagging in a switched VLAN fabric.

Front 31

What is used with holdowns to tell neighbor routes about a change in the network?

Back 31

Triggered updates

Front 32

What does frame tagging assign and where is it located?

Back 32

Frame tagging assigns a unique user-defined ID to each fram and places it in the header of each frame as it is forwarded between switches

Front 33

How is a bridge ID assigned?

Back 33

Priority and MAC address

Front 34

Which type of access list should be placed closest to the source?

Back 34

Extended

Front 35

Which type of access list should be placed close to the destination?

Back 35

Standard

Front 36

Advanced editing features are enabled by default for which modes?

Back 36

All router exec modes

Front 37

Is loopback enabled on a full-duplex Ethernet interface?

Back 37

No

Front 38

What protocols or standards define the operation of Fast Ethernet?

Back 38

IEEE 802.3u and CSMA/CD

Front 39

What kind of trunk lines can the Cisco 2960 switch support?

Back 39

802.1q but not ISL