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CCNA > 4 - Ethernet Part 1 > Flashcards

4 - Ethernet Part 1 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 [time] 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

17
Q

Hexadecimal D = Decimal […]

A

13

18
Q

Hexadecimal E = Decimal […]

A

14

19
Q

Hexadecimal F = Decimal […]

A

15

20
Q

How long is a MAC address? = […] bits

A

48

21
Q

How long is a MAC address? = […] bytes

A

6

22
Q

The first 3 bytes of a MAC address are the […]

A

OUI (Organizationally Unique Identifier)

23
Q

The first […] bytes of a MAC address are the OUI.

A

3

24
Q

What are the 5 fields of an Ethernet header?

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 the one 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

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

A

Source MAC Address

38
Q

Which 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

CCNA (24 decks)

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