LAN Switching Fundamentals Flashcards

1
Q

What are three configuration modes for the switchport port-security violation command?

A

shutdown, restrict, and protect

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2
Q

Which Cisco Internetwork Operating System (IOS) command is used to enter the VLAN configuration mode?

A

the vlan database command

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3
Q

What would be the transmission mode if two Cisco devices have their NIC speed configured to AUTO mode?

A

Full Duplex

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4
Q

What Cisco Internetwork Operating System (IOS) command will be used to create a VLAN named Sales with a VLAN number of 25?

A

the vlan 25 name Sales command

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5
Q

Which InterVLAN protocol is used to provide connectivity between VLANs?

A

IEEE 802.10 protocol

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6
Q

Which enhancement of Cisco Discovery Protocol (CDP) allows CDP to advertise a connected IP prefix for the stub router?

A

On-Demand Routing (ODR)

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7
Q

Which Cisco IOS show command will display CDP information regarding a particular neighboring device?

A

the show cdp entry command

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8
Q

What type of communication occurs when a host sends a frame to all host machines on the Ethernet LAN segment?

A

broadcast

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9
Q

What are the two states a switch port must transit from blocking to forwarding during normal operation of Spanning Tree Protocol (STP)?

A

listening and learning

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10
Q

What Cisco Internetwork Operating System (IOS) command will set a VLAN Trunking Protocol (VTP) domain named Sales?

A

the vtp domain Sales command

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11
Q

What is the default interval used by Cisco Discovery Protocol (CDP) to send updates?

A

60 seconds

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12
Q

In which type of internal switching process does a frame experience maximum latency?

A

store and forward

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13
Q

What is the default status of CDP on a Cisco device?

A

CDP is enabled by default

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14
Q

Which Cisco IOS Discovery Protocol (CDP) show command will display the IP address of the connected device?

A

the show cdp neighbors detail privileged EXEC mode command

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15
Q

Which VLAN Trunking Protocol (VTP) mode does not save VLAN information in non-volatile RAM (NVRAM)?

A

VTP Client mode

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16
Q

Which Cisco Internetwork Operating System (IOS) command is used to display VLAN Trunking Protocol (VTP) domain information?

A

the show vtp domain command

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17
Q

Which multicast feature in a switch helps control the multicasts?

A

Internet Group Management Protocol (IGMP)

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18
Q

What type of communication occurs when a host sends a frame to any specific host on the LAN?

A

Unicast

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19
Q

What is the default configuration mode for the switchport port-security violation command if none is specified?

A

shutdown

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20
Q

Which protocol enables hosts on a LAN segment to determine the MAC address of hosts with known IP addresses?

A

Address Resolution Protocol (ARP)

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21
Q

How does a standalone switch treat a multicast frame?

A

The switch will forward the packet to all ports except the port on which it was received.

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22
Q

Which Cisco IOS command is used to reset Cisco Discovery Protocol (CDP) traffic counters to zero?

A

the clear cdp counters privileged EXEC command

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23
Q

Which Virtual Local Area Network (VLAN) frame tagging method does not modify Ethernet frames?

A

Inter-Switch Link (ISL)

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24
Q

Which Cisco Internetwork Operating System (IOS) command is used to view information regarding the spanning tree for a particular VLAN?

A

the show spanning-tree vlan vlan-id command

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25
Q

Which enhancement of Cisco Discovery Protocol (CDP) allows CDP to carry Variable Length Subnet Masking (VLSM) information?

A

On-Demand Routing (ODR)

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26
Q

Which Protocol is used to obtain the IP address for a machine based on the MAC address?

A

Reverse Address Resolution Protocol (RARP)

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27
Q

Which connection types can carry frames for multiple VLANs?

A

Trunk connections

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28
Q

What is the default time a port takes to transit from blocking through forwarding during normal operation of Spanning Tree Protocol (STP)?

A

50 seconds

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29
Q

What do switches use for Local Area Network (LAN) segmentation?

A

virtual LANs (VLANs)

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30
Q

How many collision domains does a 12-port switch create?

A

12

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31
Q

What is the broadcast MAC address for Ethernet as defined by IEEE?

A

FFFF.FFFF.FFFF

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32
Q

Which Cisco Internetwork Operating System (IOS) command is used to view VLAN Trunking Protocol (VTP) statistics information?

A

the show vtp counters command

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33
Q

What type of communication occurs when a host sends a frame to select few host machines on the Ethernet LAN segment?

A

Multicast

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34
Q

How many collision domains does a 12-port hub create?

A

One

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35
Q

Which Cisco IOS command is used to configure the frequency at which the Cisco IOS software sends Cisco Discovery Protocol (CDP) updates?

A

the cdp timer global configuration command

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36
Q

Which Cisco Discovery Protocol (CDP) feature allows CDP to include routing information in its periodic update messages to neighboring devices?

A

On-Demand Routing (ODR)

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37
Q

Which Cisco IOS CDP show command displays the interface on which Cisco Discovery Protocol is enabled?

A

the show cdp interface privileged EXEC mode command

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38
Q

Which port on the switch connects to a 10BaseT port on a hub using a crossover cable?

A

the 10/100 Ethernet port

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39
Q

What are the five port states that Spanning Tree Protocol (STP) uses to define port status on a switch?

A

Forwarding, blocking, listening, learning, and disabled

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40
Q

What is the default CDP hold time?

A

180 seconds

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41
Q

Which System LED color indicates that a switch is operating normally?

A

Green

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42
Q

Which protocol ensures that only one active path exists between any two LAN segments by enabling specific ports and blocking others?

A

Spanning Tree Protocol (STP)

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43
Q

Which type of switching process allows switch to perform address lookup and forward the frame as soon as the destination address field in the frame header is received?

A

cut-through

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44
Q

Which type of VLAN frames are not tagged while traversing over a trunk link?

A

Native VLAN frames

45
Q

Which Cisco Internetwork Operating System (IOS) command is used to view the list of trunk ports and VLAN frame tagging methods configured for ports?

A

the show interface trunk command

46
Q

Which Cisco Internetwork Operating System (IOS) command will display the spanning tree information for VLAN 1?

A

the show spantree 1 command

47
Q

Which Cisco IOS show command can be used to identity all interfaces enabled for CDP?

A

the show running-configuration command

48
Q

Which type of VLAN allows the switch to automatically assign a switch port to a VLAN based on information from the user’s machine, such as its Media Access Control (MAC) address or IP address?

A

Dynamic VLANs

49
Q

Which Layer 2 network devices forward frames based on a MAC address table which is dynamically populated as the device learns new MAC addresses?

A

switches

50
Q

Which industry standard multiple VLAN protocol is used to connect multiple switches and routers?

A

IEEE 802.1Q protocol

51
Q

In which type of internal switching process does a frame experience latency greater than cut-through but less than store forward internal switching?

A

Fragment-free

52
Q

Which protocol does a switch use in order to create a loop-free environment?

A

Spanning Tree Protocol (STP)

53
Q

Which Cisco IOS CDP show command can be used to verify whether CDP is enabled on a particular device?

A

the show cdp neighbors command

54
Q

Which Cisco Internetwork Operating System (IOS) command is used on a Catalyst 2950 series switch to enable basic port security on an interface?

A

the switchport port-security command

55
Q

Which Cisco IOS command is used to enable the Cisco Discovery Protocol (CDP) on a Cisco device?

A

the cdp run global configuration command

56
Q

Which multicast destination MAC address is used by Cisco Discovery Protocol (CDP) to make announcements?

A

01-00-0c-cc-cc-cc

57
Q

What is the default status of CDP version 2 advertisements on a Cisco device?

A

CDP version 2 advertisements are enabled by default

58
Q

What type of communication occurs when a host’s Network Interface Card (NIC) sends and receives frames simultaneously?

A

Full-Duplex

59
Q

What are the four port mode LEDs available on a Cisco Catalyst switch?

A

stat, util, duplex, and speed

60
Q

Which protocol is used to resolve MAC address to IP address mappings?

A

Address Resolution Protocol (ARP)

61
Q

Which term defines a LAN segment where frames of a group of NICs can collide with each other?

A

Collision domain

62
Q

Which Cisco IOS command is used to enable Cisco Discovery Protocol (CDP) on an interface?

A

the cdp enable interface configuration command

63
Q

What command would be used to enable a port for VLAN 15 in access link mode?

A

the Switch(config-if)#switchport access vlan 15 command

64
Q

What type of communication occurs when a host’s Network Interface Card (NIC) sends or receives frames one at a time?

A

Half-Duplex

65
Q

Which Virtual Local Area Network (VLAN) frame tagging method adds a 4-byte tag in the middle of the original Ethernet frame?

A

IEEE 802.1Q

66
Q

Which Cisco Internetwork Operating System (IOS) command is used on a Catalyst 2950 series switch to view the VLAN database?

A

the show vlan brief command

67
Q

Which type of switching process allows switch to verify the Frame Check Sequence (FCS) of a frame before forwarding it to the destination port?

A

store and forward

68
Q

What are the three general categories of MAC addresses on Ethernet as defined by the IEEE?

A

Unicast, Broadcast, and Multicast

69
Q

Which Cisco Internetwork Operating System (IOS) command is used to view the VLAN number, name, status and ports assigned to individual VLANs?

A

the show vlan command

70
Q

Which Cisco Internetwork Operating System (IOS) command is used to view the configuration for port security?

A

the show port security command

71
Q

Which algorithm is used in Carrier Sense Multiple Access/Collision Detection (CSMA/CD) to calculate the random length of time for which a station should wait before transmitting the frames when a collision occurs?

A

the back-off algorithm

72
Q

On the basis of which address does a switch make forwarding and filtering decisions?

A

Media Access Control (MAC) address

73
Q

Which show command is used to display the status of port security on the specified interface of a Catalyst switch?

A

The show port-security [interface interface-id | address] command

74
Q

What are the three actions performed by transparent bridges?

A

Learn MAC address by examining the source address of each frame, decide whether to forward the frame or filter it out, and to create a loop-free environment by using STP

75
Q

Which Cisco proprietary protocol can be used for trunking between two VLAN capable Ethernet, fast Ethernet, or gigabit Ethernet devices?

A

Inter-Switch Link Protocol (ISL)

76
Q

Which address does a switch use to forward frames to the destination?

A

a Media Access Control (MAC) address

77
Q

Which Cisco IOS command is used to display information about a specific neighboring device discovered using Cisco Discovery Protocol (CDP)?

A

the show cdp entry{* | device-name [*] [protocol | version]} privileged EXEC mode command

78
Q

Which feature of Cisco VLAN Trunking Protocol (VTP) will allow switches to dynamically delete or add VLANs to a trunk?

A

VLAN Trunking Protocol (VTP) pruning

79
Q

Which Cat OS command is used to enable port security on a Catalyst 6500 series switch?

A

the set port-security command

80
Q

Which Cisco IOS command is used to clear the table that contains Cisco Discovery Protocol (CDP) information about neighboring devices?

A

the clear cdp table privileged EXEC command

81
Q

Which Cisco IOS show command will display information on globally configured Cisco Discovery Protocol (CDP) parameters on a Cisco device?

A

the show cdp command

82
Q

How does a standalone switch treat a broadcast frame?

A

The switch will forward the packet to all ports except the port on which it was received.

83
Q

What are the three types of switching processes?

A

Store and forward, cut-through, and fragment-free switching

84
Q

Which Cisco Internetwork Operating System (IOS) command displays all port security settings for a specified interface?

A

the show port-security interface-id command

85
Q

Which type of switching process only waits to receive the first 64 bytes of the frame before forwarding it the destination port?

A

Fragment-free

86
Q

Which Cisco Internetwork Operating System (IOS) command is used to verify the status of VLAN Trunking Protocol (VTP) protocol?

A

the show vtp status command

87
Q

Which type of switching process requires switch to wait until the entire frame is received before forwarding it to the destination port?

A

store and forward

88
Q

In which type of internal switching process does a frame experience minimum latency?

A

cut-through

89
Q

Which Cisco IOS command would display information collected by Cisco Discovery Protocol (CDP) about traffic details between devices?

A

the show cdp traffic privileged EXEC mode command

90
Q

How does a standalone switch treat a Unicast frame for which it could not find any mapping in the switch MAC table?

A

The switch will forward the packet to all ports except the port on which it was received.

91
Q

Which mechanism allows two connected network devices to choose common transmission speed or duplex mode?

A

Autonegotiation

92
Q

How many broadcast domains does a 4-port hub create?

A

One

93
Q

Which Virtual Local Area Network (VLAN) frame tagging method has a concept of native VLAN?

A

IEEE 802.1Q

94
Q

Which type of switching process does NOT allow switch to verify the Frame Check Sequence (FCS) in a frame before forwarding it to the destination port?

A

cut-through

95
Q

What would be the destination MAC address for a host sending a packet to another host across a router?

A

the MAC address of the router

96
Q

Which Cisco IOS command is used to enable the Cisco Discovery Protocol Version 2 (CDPv2) advertising feature on a Cisco device?

A

the cdp advertise-v2 global configuration command

97
Q

How many broadcast domains does a 24-port switch create with two VLANs having 12 port assigned to each?

A

two

98
Q

Which Cisco proprietary protocol operates at OSI Layer 2 but is capable of obtaining OSI Layer 3 IP address information for directly connected neighboring devices?

A

Cisco Discovery Protocol (CDP)

99
Q

Which Cisco IOS command is used to configure the amount of time the receiving Cisco device should hold a Cisco Discovery Protocol (CDP) packet from a neighboring router?

A

the cdp holdtime global configuration command

100
Q

Which term defines a LAN segment where broadcast from one NIC can be received by all other NICs on the segment?

A

Broadcast domain

101
Q

Which protocol allows switches to eliminate network-loops?

A

Spanning Tree Protocol (STP)

102
Q

At which OSI layer does the Cisco Discovery Protocol (CDP) operate?

A

Layer 2

103
Q

Which method is used to identify frames from different VLANs?

A

Frame tagging

104
Q

Which VLAN Trunking Protocol (VTP) mode allows a switch to synchronize the VLAN information with the domain, send and forward advertisements, and create, delete, or modify VLANs?

A

Server mode

105
Q

Which protocol defines the media access control mechanism in which the transmitting station waits for a random time interval before transmitting a frame when there is a collision?

A

Carrier Sense Multiple Access/Collision Detection (CSMA/CD)

106
Q

How many broadcast domains does a 24-port switch, without VLAN configured, create?

A

one

107
Q

Which internal switching process works on the premise that collisions are detected within the first 64 bytes of a frame?

A

Fragment-Free

108
Q

Which type of Ethernet cable is used to connect the 10/100 port on the switch to another switch?

A

a crossover cable