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ISDN1 > Ch. 10 Troubleshooting Ethernet LANs > Flashcards

Ch. 10 Troubleshooting Ethernet LANs Flashcards

0
Q

________ refers to the follow-on process that occurs when the network is not working as designed

A

Troubleshooting

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1
Q

_____ refers to the process of confirming wether a network is working as designed

A

Verification

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2
Q

CDP

A

Cisco discovery protocol

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3
Q

______ must be in a working state before the switch will forward frames on the interface

A

Interfaces

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4
Q

You must know how to _____ a switch’s Mac address table and how to then predict how a switch will forward a particular frame

A

Analyze

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5
Q

Keeping a layer to switch focus look at what can go wrong with VLANs and VLAN _____

A

Trunks

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6
Q

The proprietary _____ discovers basic information about neighboring routers and switches without needing to know the password for the neighboring devices

A

CDP (Cisco discovery protocol)

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7
Q

LLDP

A

Link layer discovery protocol

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8
Q

From a Troubleshooting perspective _____ can be used to either confirm or fix the documentation shown and the network diagram

A

CDP

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9
Q

____ _____ is typically the host name

A

Device identifier

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10
Q

_____ _____ is a networking data link addresses

A

Address list

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11
Q

_____ _____ The interface on the remote router or switch on the other end of the link that sent the CDP advertisement

A

Port identifier

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12
Q

_____ ____ is information of what type of device it is for example a router or switch

A

Capabilities list

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13
Q

Is the model and OS level running on the

A

Platform

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14
Q

_____ Defines protocol messages that flow between devices

A

CDP

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15
Q

Cisco switches use ____ different sets of interface status codes, one set of two codes (words) that use the same conventions as do router interface status codes, and another set with a single code (word)

A

2

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16
Q

Two codes are named the ____ status and ____ status

A

Line and protocol

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17
Q

The statuses are usually shown in the interface with both codes with either an ___ or ____ status

A

Up or down

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18
Q

Any interface status other then _____ or ___/____ means that the switch will not forward or receive frames on the interface

A

Connected

Up/up

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19
Q

When the _____ autonegotiation process works on both devices, both devices agree to the fastest speed supported by both device

A

IEEE

20
Q

If the speed is not known if through any means, use10 Mbps ____ _____

A

Half duplex

21
Q

If the speed is 10 or 100 Mbps, default to use ____ ____

A

Half duplex

22
Q

If the speed is 11,000 Mbps, default to use ____ ____

A

Full duplex

23
Q

CRC

A

Cyclic redundancy check

24
Q

ACL

A

Access control list

25
Q

The Proprietary ____ discovers basic information about neighboring routers and switches without needing to know the passwords for the neighboring devices

A

CDP (Cisco discovery protocol)

26
Q

Discover information routers and switches send ____ messages out of each of their interfaces

A

CDP

27
Q

From the troubleshooting perspective____ can be used to either confirm or fix the documentation shown in a network diagram or even discover devices and interfaces used in the network

A

CDP

28
Q

Device identifier, address list, port identifier, capabilities list, and platform can all be discovered using ____

A

CDP

29
Q

The switch show interfaces and show interfaces description commands list the two code status just like routers. The two codes are named the ____ status and _____ status

A

Line and protocol

30
Q

The ____ _____ status command lists different single interface status code, this single interface status code corresponds to different combinations of the traditional to code interface status codes and can be easily correlated to those codes

A

Show interfaces

31
Q

Any interface state other than _____ or ___/____ means that the switch will not forward or receive frames on the interface

A

Connected up/up

32
Q

____ Are frames that do not meet the minimum frame size requirement (64 bytes including the 18 by destination Mac source Mac type and FCS) may be caused by collisions

A

Runts

33
Q

____ are frames that exceed the maximum frame size requirement (1518 bytes including the 18 by destination Mac, source Mac, type, and FCS)

A

Giants

34
Q

____ A total of many counters including runts Giants no buffer CRC frame overrun and ignored counts

A

Input errors

35
Q

____ Are received frames that did not pass the FCS math; may be caused by collisions

A

CRC

36
Q

_____ are received frames that have an illegal format; may be caused by collision

A

Frames

37
Q

___ are the total number of packets (frames) that the switch port tried to transmit but for which some problem occurred

A

Output errors

38
Q

____ Are the total number of packets (frames) for the out the interface

A

Packet outputs

39
Q

____ Are the counter of all collisions that occur when the interfaces transmitting a frame

A

Collisions

40
Q

_____ The subset of all collisions happen after the 64th bytes of the frame has been transmitted (in a properly working ethernet LAN, collisions should occur within the first 64 bytes late collisions often point to a duplex mismatch)

A

Late collision

41
Q 
Imagine the switch connects through an ethernet cable to the router, and the router's host name is Hannah. Which of the following commands could tell you information about the iOS version on Hannah without establishing a telnet connection to Hannah? (choose two)
Show neighbors Hannah
Show CDP
Show CDP neighbors
Show CDP neighbors Hannah
Show CDP entry Hannah
Show CDP neighbors detail
A

Show CDP entry Hannah

So CDP neighbors detail

42
Q 
The switch is cabled to a router who's host name is Hannah. Which of the following CDP commands could identify hannah's model of hardware? (Choose two answers)
Show neighbor
Show neighbor Hannah
Show CDP
Show CDP Interface
Show CDP neighbors
Show CDP entry Hannah
A

Show CDP neighbors

Show CDP entry Hannah

43
Q

The output of the show interfaces status command on the 2960 switch shows interface Fa0/1 in a “disabled” state. The following is true about interface Fa0/1(choose three answers)
The interfaces configured with the shutdown command
The show interfaces fa0/1 command will list the interface with two status codes of administratively down and line protocol down
The show interfaces fa0/1 command list the interface with two status codes of up and down
The interface cannot currently be used to forward frames
The interface can currently be used Forward frames

A

The interfaces configured with the shutdown command
The show interfaces fa0/1 command will list the interface with two status codes of administratively down and line protocol down
The interface cannot currently be used forward frames

44
Q

Switch SW1 uses it’s gigabit 0/1 interface to connect to switch SW2’s gigabit 0/2 interface. SW2’s Gi0/2 interface is configured with the speed 1000 the duplex full command. SW1 uses all defaults for interface configuration commands on its Gi0/1 interface. Which of the following are true about the link after comes up? (Choose two answers)
The link works at 1000 Mbps (Gbps)
SW1 attempts to run at 10 Mbps because SW2 has effectively disabled IEEE standard autonegotiation
The link runs at 1 Gbps, but SW1 uses half duplex and SW2 uses full-duplex
Both switches use full-duplex

A

The link works at 1000 Mbps (1 Gbps)

Both switches use full-duplex

45
Q

The following line of output was taken from a show interfaces fa0/1 command:
Full – duplex, 100Mbps, media type is 10/100baseTX
Which of the following are true about the interface? (Choose two answers)
The speed was definitely configured with speed 100 interface subcommand
The speed might have been configured with the speed 100 interface subcommand
The duplex was definitely configured with the duplex full interface subcommand
The duplex might have been configured with the duplex full interface subcommand

A

The speed might have been configured with the speed 100 interface subcommand

The duplex might have been configured with the duplex full interface subcommand

46
Q 
Which of the following commands list the Mac address table entries for Mac addresses configured by port security? (Choose two answers)
Show Mac address – table dynamic
Show Mac address – table
Show Mac address – table static
Show Mac address – table port security
A

Show Mac address – table

Show Mac address – table static

47
Q 
On a Cisco catalyst switch you issue a show Mac address – table command. Which of the following answers list information you would likely see in most lines of output? (Choose two answers)
Mac address
IP address
VLAN ID
Type (broadcast, multitask, or unicast)
A

Mac address

VLAN ID

48
Q

Layer 2 switches SW1 and SW2 connect through a link, with port G0/1 on SW1 and port G0/2 on SW2. Network engineer wants to use 802.1Q trunking on this link. The show interfaces g0/1 switchport command on SW1 shows the output listed here:
SW1# no interfaces gigabit0/1 switchport
Name: Gi0/1
Switchport: enabled
Administrative mode: trunk
Operational mode: trunk
The following must be true on switch SW2’s G0/2 port
The operational state per the show interfaces switch port command must be “trunk”
The administrative state per the show interfaces switch port command must be “trunk”
SW2 must use the switch port mode trunk configuration command on G0/1, or the link will not use trunking
SW2 can use the switch port mode dynamic auto configuration command as one option to make the link use trunking

A

SW2 can use the switch port mode dynamic autoconfiguration command as one option to make the link use trunking

ISDN1 (28 decks)

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