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ICND2 > ICND2 Chapter 02 > Flashcards

ICND2 Chapter 02 Flashcards

1
Q

Three classes of Problems caused by not using STP in Redundant LANs

A

Broadcast storms MAC table instability Multiple frame transmission

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2
Q

STP: All the root switch’s ports Blocking/Forwarding

A

Forwarding

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3
Q

STP: Each nonroot switch’s root port Blocking/Forwarding

A

Forwarding

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4
Q

STP: Each LAN’s designated port Blocking/Forwarding

A

Forwarding

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5
Q

STP: All the other working ports Blocking/Forwarding

A

Blocking

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6
Q

Fields in the STP Hello BPDU: Root Bridge ID

A

The bridge ID believed to be the root

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7
Q

Fields in the STP Hello BPDU: Sender’s bridge ID

A

The bridge ID of the bridge/switch sending this BPDU

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8
Q

Fields in the STP Hello BPDU: Cost to each root

A

The STP cost between this switch and the current root

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9
Q

Fields in the STP Hello BPDU: Timer values on the root switch

A

Hello Timer; Max Age timer; Forward Delay timer

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10
Q

Default Port Costs According to IEEE: 10 Mbps

A

100; 100

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11
Q

Default Port Costs According to IEEE: 100 Mbps

A

10; 19

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12
Q

Default Port Costs According to IEEE: 1 Gbps

A

1; 4

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13
Q

Default Port Costs According to IEEE: 10 Gbps

A

1; 2

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14
Q

STP Timer: Hello

A

Time between Hello’s; 2 second default

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15
Q

STP Timer: Max Age

A

How long any switch should wait after last Hello; 10 x Hello default

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16
Q

STP Timer: Forward Delay

A

Listen State = Forward Delay; Learning State = Forward Delay; 15 second default

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17
Q

IEEE 802.1D Spanning –Tree State Blocking: Forwards Data Frames

A

No

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18
Q

IEEE 802.1D Spanning –Tree State Blocking: Learns MACs Based on Received Frames

A

No

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19
Q

IEEE 802.1D Spanning –Tree State Blocking: Transitory or Stable State

A

Stable

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20
Q

IEEE 802.1D Spanning –Tree State Listening: Forwards Data Frames

A

No

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21
Q

IEEE 802.1D Spanning –Tree State Listening: Learns MACs Based on Received Frames

A

No

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22
Q

IEEE 802.1D Spanning –Tree State Listening: Transitory or Stable State

A

Transitory

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23
Q

IEEE 802.1D Spanning –Tree State Learning: Forwards Data Frames

A

No

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24
Q

IEEE 802.1D Spanning –Tree State Learning: Learns MACs Based on Received Frames

A

Yes

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25
Q

IEEE 802.1D Spanning –Tree State Learning: Transitory or Stable State

A

Transitory

26
Q

IEEE 802.1D Spanning –Tree State Forwarding: Forwards Data Frames

A

Yes

27
Q

IEEE 802.1D Spanning –Tree State Forwarding: Learns MACs Based on Received Frames

A

Yes

28
Q

IEEE 802.1D Spanning –Tree State Forwarding: Transitory or Stable State

A

Stable

29
Q

IEEE 802.1D Spanning –Tree State Disabled: Forwards Data Frames

A

No

30
Q

IEEE 802.1D Spanning –Tree State Disabled: Learns MACs Based on Received Frames

A

No

31
Q

IEEE 802.1D Spanning –Tree State Disabled: Transitory or Stable State

A

Stable

32
Q

STP (802.1d) State Blocking; RSTP (802.1w) State Discarding; Operational State

A

Enabled

33
Q

STP (802.1d) State Listening; RSTP (802.1w) State Discarding; Operational State

A

Enabled

34
Q

STP (802.1d) State Learning; RSTP (802.1w) State Learning; Operational State

A

Enabled

35
Q

STP (802.1d) State Forwarding; RSTP (802.1w) State Forwarding; Operational State

A

Enabled

36
Q

STP (802.1d) State Disabled; RSTP (802.1w) State Discarding; Operational State

A

Disabled

37
Q

STP (802.1d) State Blocking; RSTP (802.1w) State Discarding; Forwards Data Frames in This State

A

No

38
Q

STP (802.1d) State Listening; RSTP (802.1w) State Discarding; Forwards Data Frames in This State

A

No

39
Q

STP (802.1d) State Learning; RSTP (802.1w) State Learning; Forwards Data Frames in This State

A

No

40
Q

STP (802.1d) State Forwarding; RSTP (802.1w) State Forwarding; Forwards Data Frames in This State

A

Yes

41
Q

STP (802.1d) State Disabled; RSTP (802.1w) State Discarding; Forwards Data Frames in This State

A

No

42
Q

RSTP Root port; STP Root port Role Definition

A

Hears the best BPDU out of all received

43
Q

RSTP Designated port; STP Designated port Role Definition

A

The port that advertises the “best” BPDU.

44
Q

RSTP Alternate port; STP NA Role Definition

A

Receives the suboptimal BPDU

45
Q

RSTP Backup port; STP NA Role Definition

A

A non-designated port on a switch that is attached to the same segment

46
Q

RSTP Disabled; STP NA Role Definition

A

Admin disabled or not working port

47
Q

PVST+ Supports STP

A

Yes

48
Q

PVST+ Supports RSTP

A

No

49
Q

PVST+ Configuration Effort

A

small

50
Q

PVST+ Only One instance required for each redundant path

A

No

51
Q

PVRST Supports STP

A

No

52
Q

PVRST Supports RSTP

A

Yes

53
Q

PVRST Configuration Effort

A

small

54
Q

PVRST Only One instance required for each redundant path

A

No

55
Q

MIST Supports STP

A

No

56
Q

MIST Supports RSTP

A

Yes

57
Q

MIST Configuration Effort

A

medium

58
Q

MIST Only One instance required for each redundant path

A

Yes

59
Q

STP Bridge ID default

A

Priority: 32768 + VLAN ID; System: A burned-in MAC on the switch; spanning-tree vlan vlan-id root [primary|secondary]; spanning-tree vlan vlan-id priority priority

60
Q

STP Interface cost default

A

100 for 10 Mbps; 19 for 100 Mbps; 4 for 1 Gbps; 2 for 10 Gbps; spanning-tree vlan vlan-id cost cost

61
Q

STP Portfast

A

spanning-tree portfast

62
Q

STP BPDU Guard

A

spanning-tree bpduguard enable

ICND2 (16 decks)

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