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CCNA > 18 - Spanning Tree Part 2 > Flashcards

18 - Spanning Tree Part 2 Flashcards

1
Q

[…] allows an STP port to move immediately to the forwarding state.

A

Portfast

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2
Q

Configure spanning tree in PVST mode:
SW1(config)# […]

A

spanning-tree mode pvst

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3
Q

Configure the spanning-tree root for a VLAN:
SW1(config)# […]

A

spanning-tree vlan <vlan-id> root primary</vlan-id>

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4
Q

Configure the spanning-tree secondary root for a VLAN:
SW1(config)# […]

A

spanning-tree vlan <vlan-id> root secondary</vlan-id>

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5
Q

Configure the STP cost of an interface:
SW1(config-if)# […]

A

spanning-tree vlan <vlan-id> cost <cost></cost></vlan-id>

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6
Q

Configure the STP priority of an interface:
SW1(config-if)# […]

A

spanning-tree vlan <vlan-id> port-priority <priority></priority></vlan-id>

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7
Q

Enable BPDU Guard on a switch port:
SW1(config-if)# […]

A

spanning-tree bpduguard enable

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8
Q

Enable BPDU Guard on all Portfast-enabled interfaces:
SW1(config)# […]

A

spanning-tree portfast bpduguard default

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9
Q

Enable portfast on a switch port:
SW1(config-if)# […]

A

spanning-tree portfast

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10
Q

Enable portfast on all access ports on the switch:
SW1(config)# […]

A

spanning-tree portfast default

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11
Q

If an interface with […] enabled receives a BPDU from another switch, the interface will be shut down.

A

BPDU Guard

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12
Q

PVST+ BPDUs are sent to destination MAC address:

A

0100.0ccc.cccd

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13
Q

spanning-tree vlan vlan-id root secondary sets the STP priority to […]

A

28672

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14
Q

spanning-tree vlan vlan-id root primary sets the STP priority to […], or 4096 less than the current root’s priority.

A

24576

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15
Q

Standard STP (NOT PVST) BPDUs are sent to destination MAC address:

A

0180.c200.0000

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16
Q

STP BPDUs are only forwarded on […] ports.

A

designated

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17
Q

STP default Forward delay timer:

A

15 seconds

18
Q

STP default hello timer:

19
Q

STP default max age timer:

A

20 seconds (10*hello timer)

20
Q

STP: A blocking interface [can/can’t] move directly to a forwarding state.

21
Q

STP: A forwarding interface [can/can’t] move directly to a blocking state.

22
Q

STP: Do interfaces in a blocking state learn MAC addresses?

23
Q

STP: Do interfaces in a blocking state receive BPDUs?

24
Q

STP: Do interfaces in a blocking state send BPDUs?

25
Q

STP: Do interfaces in a blocking state send/receive regular network traffic?

26
Q

STP: Do interfaces in a Forwarding state learn MAC addresses?

27
Q

STP: Do interfaces in a Forwarding state send/receive BPDUs?

28
Q

STP: Do interfaces in a Forwarding state send/receive regular network traffic?

29
Q

STP: Do interfaces in a Learning state learn MAC addresses?

30
Q

STP: Do interfaces in a Learning state send/receive BPDUs?

31
Q

STP: Do interfaces in a Learning state send/receive regular network traffic?

32
Q

STP: Do interfaces in a Listening state learn MAC addresses?

33
Q

STP: Do interfaces in a Listening state send/receive BPDUs?

34
Q

STP: Do interfaces in a Listening state send/receive regular network traffic?

35
Q

STP: Non-designated ports are in a […] state.

36
Q

SW1(config)# spanning-tree portfast default
This command enables portfast on which ports?

A

All access ports

37
Q

The STP timers on the […] determine the timers used for all switches in the network.

A

root bridge

38
Q

What are the two ‘stable’ STP port states?

A

Blocking, Forwarding

39
Q

What are the two ‘transitional’ STP port states?

A

Listening, Learning

40
Q

Which STP optional feature prevents a newly connected switch from becoming the root bridge?

A

Root Guard

41
Q

Which STP optional feature shuts down an interface if it stops receiving BPDUs?

A

Loop Guard

CCNA (24 decks)

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