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CCNA 200-301 > Ethernet Switching > Flashcards

Ethernet Switching Flashcards

1
Q

A ___ frame is a frame destined for a single target.

A

Unicast

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2
Q

A MAC address is written as ___ hexadecimal characters

A

12

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3
Q

A MAC address learned by a switch without manual configuration is called a ___

A

Dynamic MAC address (dynamically learned MAC address)

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4
Q

A switch will flood an __ unicast frame

A

Unknown

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5
Q

A value of ___ or greater in the Type/Length field indicates Type.

A

1536

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6
Q

A value of ___ or less in the Type/Length field indicates Length

A

1500

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7
Q

By default, a dynamic MAC address will be removed from the MAC address table after ___ of inactivity

A

5 minutes

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8
Q

Ethernet header “destination” = ___ byte(s)

A

6

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9
Q

Ethernet header “preamble” = ___ byte(s)

A

7

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10
Q

Ethernet header “SFD” = ___ byte(s)

A

1

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11
Q

Ethernet header “source” = ___ byte(s)

A

6

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12
Q

Ethernet header “Type/Length” = ___ byte(s)

A

2

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13
Q

Ethernet trailer “FCS” = ___ byte(s)

A

4

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14
Q

Hexadecimal A = Decimal ___

A

10

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15
Q

Hexadecimal B = Decimal ___

A

11

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16
Q

Hexadecimal C = Decimal ___

A

12

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17
Q

Hexadecimal D = Decimal ___

A

13

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18
Q

Hexadecimal E = Decimal ___

A

14

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19
Q

Hexadecimal F = Decimal ___

A

15

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20
Q

How long is a MAC address? = ___ bits

A

48

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21
Q

How long is a MAC address? = ___ bytes

A

6

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22
Q

The first 3 bytes of a MAC address are the ___

A

OUI (Organizationally Unique Identifier)

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23
Q

The first ___ byes of a MAC address are the OUI

A

3

24
Q

What are the 5 fields of an Ethernet Headed?

A

Preamble, SFD, Destination, Source, Type/Length

25
Q

What does “FCS” in an Ethernet Frame stand for?

A

Frame Check Sequence

26
Q

What does “SFD” in an Ethernet header stand for?

A

Start Frame Delimiter

27
Q

What does a switch do with an unknown unicast frame?

A

Floods it out all ports (except port it was received on

28
Q

What does MAC stand for?

A

Media Access Control

29
Q

What is another name for a MAC address?

A

BIA (Burned-In Address)

30
Q

What is the bit pattern of one byte in the Ethernet preamble?

A

10101010

31
Q

What is the bit pattern of the Ethernet SFD?

A

10101011

32
Q

What is the Ethernet Type value for IPv4? (In hexadecimal)

A

0x0800

33
Q

What is the Ethernet Type value for IPv6? (In hexadecimal)

A

0x86DD

34
Q

What is the only field in an Ethernet trailer?

A

FCS (Frame Check Sequence)

35
Q

What is the total size of the Ethernet header + trailer? = ___ bytes

A

26

36
Q

What kind of algorithm does the Ethernet FCS use?

A

CRC (Cyclic Redundancy Check)

37
Q

What field of an Ethernet frame does a switch use to learn and populate its MAC address table?

A

Source MAC address

38
Q

What field of an Ethernet header is used for synchronization?

A

Preamble

39
Q

Which field of an Ethernet header marks the end of the preamble?

A

SFD

40
Q

Clear all dynamic MAC addresses from MAC Address Table:

SW1#___

A

clear mac address-table dynamic

41
Q

Clear all dynamic MAC addresses on a specific interface from MAC Address Table:
SW1#___

A

clear mac address-table dynamic interface (interface-id)

42
Q

Clear all dynamic MAC addresses for a specific dynamic MAC address from MAC Address Table:
SW1#___

A

clear mac address-table dynamic address (mac-address)

43
Q

Command to show ARP table on Cisco device:

A

show arp

44
Q

ARP Reply message is ___

A

Unicast

45
Q

ARP Request message is ___

A

broadcast

46
Q

The process of addresses being cleared after 5 minutes of inactivity is called ___

A

Aging

47
Q

View MAC Address Table:

SW1# ___

A

show mac address-table

48
Q

What is the broadcast MAC address?

A

FFFF.FFFF.FFFF

49
Q

What is the command to view the ARP table on a Windows, macOS, or Linux computer?

A

arp -a

50
Q

What is the Ethernet Type code for an ARP packet?

A

0x0806

51
Q

What is the minimum size of an Ethernet Frame? (Headed + Payload + Trailer)

A

64 bytes

52
Q

What is the minimum size of an Ethernet payload?

A

46 bytes

53
Q

What is the size of the Ethernet header + trailer? (No Preamble + SFD)

A

18 bytes

54
Q

What protocol is used to discover the Layer 2 address of another device?

A

ARP (Address Resolution Protocol)

55
Q

What two messages are used in ARP?

A

ARP Request

ARP Reply

56
Q

What two messages are used in ping?

A

ICMP Echo Request

ICMP Echo Reply

CCNA 200-301 (10 decks)

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