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CCNA 200-301 > IPv4 Header > Flashcards

IPv4 Header Flashcards

1
Q

A router will drop a packet with a TTL of ___

A

0

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2
Q

A value of ___ in the IP header “Version” field indicates IP version 4.

A

4 (binary 0100)

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3
Q

A value of ___ in the IP header “Version” field indicates IP version 6.

A

6 (binary 0110)

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4
Q

IPv4 header “Flags” field:

Bit: ___ = Reserved, always set to 0

A

0

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5
Q

IPv4 header “Flags” field:

Bit ___ = DF bit

A

1

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6
Q

IPv4 header “Flags” field:

Bit ___ = MF bit

A

2

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7
Q

IPv4 header “Flags” field:

What does “DF bit” stand for?

A

Don’t Fragment bit

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8
Q

IPv4 header “Flags” field:

What does “MF bit” stand for?

A

More Fragments bit

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9
Q

IPv4 header “Protocol” field:

Value of 1 = ___

A

ICMP

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10
Q

IPv4 header “Protocol” field:

Value of 17 = ___

A

UDP

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11
Q

IPv4 header “Protocol” field:

Value of 6 = ___

A

TCP

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12
Q

IPv4 header “Protocol” field:

Value of 89 = ___

A

OSPF

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13
Q

IPv4 header “Protocol” field:

Value of ___ = ICMP

A

1

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14
Q

IPv4 header “Protocol” field:

Value of ___ = OSPF

A

89

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15
Q

IPv4 header “Protocol” field:

Value of ___ = TCP

A

6

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16
Q

IPv4 header “Protocol” field:

Value of ___ = UDP

A

17

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17
Q

IPv4 header: All fragments of the same packet will have the same value in the ___ field

A

Identification

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18
Q

IPv4 header: the “Checksum” field is ___ bits in length.

A

16

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19
Q

IPv4 header: the “Destination IP Address” field is ___ bits in length.

A

32

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20
Q

IPv4 header: the “DSCP” field is ___ bits in length.

A

6

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21
Q

IPv4 header: the “ECN” field is ___ bits in length.

A

2

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22
Q

IPv4 header: the “Flags” field is ___ bits in length.

A

3

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23
Q

IPv4 header: the “Fragment Offset” field is ___ bits in length.

A

13

24
Q

IPv4 header: the “Identification” field is ___ bits in length.

A

16

25
Q

IPv4 header: the “IHL” field is ___ bits in length.

A

4

26
Q

IPv4 header: the “Protocol” field is ___ bits in length.

A

8

27
Q

IPv4 header: the “Source IP Address” field is ___ bits in length.

A

32

28
Q

IPv4 header: the “Total Length” field is ___ bits in length.

A

16

29
Q

IPv4 header: the “TTL” field is ___ bits in length.

A

8

30
Q

IPv4 header: The IHL field specifies the length of the header in ___ increments.

A

4-byte (32 bit)

31
Q

IPv4 header: What does “DSCP” stand for?

A

Differentiated Services Code Point

32
Q

IPv4 header: What does “ECN” stand for?

A

Explicit Congestion Notification

33
Q

IPv4 header: What does “IHL” stand for?

A

Internet Header Length

34
Q

IPv4 header: What does “TTL” stand for?

A

Time To Live

35
Q

IPv4 header: What is the maximum length of the “options” field?

A

320 bits / 40 bytes

36
Q

IPv4 header: What is the maximum length of the “Total Length” field?

A

65,535

37
Q

IPv4 header: What is the maximum length of the “IHL” field?

A

15

38
Q

IPv4 header: What is the minimum length of the “options” field?

A

0 bits

39
Q

IPv4 header: What is the minimum length of the “Total Length” field?

A

20 (=IPv4 header with no encapsulated data)

40
Q

IPv4 header: What is the minimum length of the “IHL” field?

A

5

41
Q

IPv4 header: Which field indicates the protocol of the encapsulated L4PDU?

A

Protocol

42
Q

IPv4 header: Which field indicates the total length of the packet?

A

Total Length

43
Q

IPv4 header: Which field is used to check for errors in the header?

A

Header Checksum

44
Q

IPv4 header: Which field identifies the packet a fragment belongs to?

A

Identification

45
Q

IPv4 header: Which field indicates the position of a fragment within an original, unfragmented IP packet?

A

Fragment Offset

46
Q

IPv4 header: Which field prevents infinite loops?

A

TTL

47
Q

IPv4 header: Which field prioritizes delay sensitive network traffic?

A

DCSP

48
Q

IPv4 header: Which field provides end-to-end notification of network congestion?

A

ECN

49
Q

IPv4 packets are fragmented if they are larger than the ___

A

MTU (Maximum Transmission Unit)

50
Q

The IPv4 “Version” field is ___ bits in length.

A

4

51
Q

The MTU is usually ___ bytes.

A

1500

52
Q

The recommended default TTL of an IPv4 packet is ___

A

64

53
Q

Unfragmented IPv4 packets will always have the MF bit set to ___

A

0

54
Q

What does “MTU” stand for?

A

Maximum Transmission Unit

55
Q

What is the maximum length of the IPv4 header?

A

60 bytes

56
Q

What is the minimum length of the IPv4 header?

A

20 bytes

CCNA 200-301 (10 decks)

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