Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

280 networking > Chapters 5 - 9 > Flashcards

Chapters 5 - 9 Flashcards

1
Q

50: (p.38) What is layer 7 of the OSI model?

A

application

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

51: (p.38) What layer number is the Application layer of the OSI model?

A

7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

52: (p.38) What is layer 6 of the OSI model?

A

presentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

53: (p.39) What layer number is the Presentation layer of the OSI model?

A

6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

54: (p.39) At which OSI layer is encryption / decryption?

A

6 or presentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

55: (p.39) At which OSI layer is data compression?

A

6 or presentation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

56: (p.39) What is layer 5 of the OSI model?

A

session

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

57: (p.39) What layer number is the Session layer of the OSI model?

A

5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

58: (p.40) What is layer 4 of the OSI model?

A

transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

59: (p.40) What layer number is the Transport layer of the OSI model?

A

4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

60: (p.40) What does MTU stand for?

A

maximum transmission (or transfer) unit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

61: (p.40) What is the typical value for MTU (in bytes)?

A

1500

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

62: (p.41) At which OSI layer are software ports?

A

4 or transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

63: (p.41) What does TCP stand for?

A

transmission control protocol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

64: (p.41) Which protocol provides for guaranteed delivery of information?

A

TCP, or Transmission Control Protocol
TCP, the Transmission Control Protocol, provides guaranteed delivery through
retransmission as needed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

65: (p.41) At which OSI layer is TCP?

A

4 or transport
TCP is suitable for le transmission where accuracy is more important than
avoiding delays.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

66: (p.41) Which protocol provides for fast (but not guaranteed) delivery of
information?

A

UDP, or User Datagram Protocol
UDP, the User Datagram Protocol, provides fast delivery but does not guar-
antee delivery.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

67: (p.42) What does UDP stand for?

A

user datagram protocol
UDP is suitable for live voice, live sound, and live video, where avoiding
delays is more important than absolute accuracy, and dropped data can
usually be ignored.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

68: (p.42) At which OSI layer is UDP?

A

4 or transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

69: (p.42) At which OSI layer do we nd segments?

A

4 or transport

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

70: (p.42) What is the Protocol Data Unit at OSI layer 4?

A

segment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

71: (p.42) What is layer 3 of the OSI model?

A

network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

72: (p.43) What layer number is the Network layer of the OSI model?

A

3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

73: (p.43) At which OSI layer is the Internet?

A

3 or network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

74: (p.43) At which OSI layer are Wide Area Networks?

A

3 or network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

75: (p.43) What does WAN stand for?

A

wide area network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

76: (p.43) At which OSI layer is IP Addressing?

A

3 or network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

77: (p.43) At which OSI layer is Logical Addressing?

A

3 or network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

78: (p.43) At which OSI layer does a router operate?

A

3 or network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

79: (p.43) At which OSI layer does a gateway operate?

A

3 or network

31
Q

80: (p.44) At which OSI layer is Network Address Translation?

A

3 or network

32
Q

81: (p.44) At which OSI layer is Port Address Translation?

A

3 or network

33
Q

82: (p.44) At which OSI layer do we nd packets?

A

3 or network

34
Q

83: (p.44) What is the Protocol Data Unit at OSI layer 3?

35
Q

84: (p.44) What is layer 2 of the OSI model?

36
Q

85: (p.44) What layer number is the Data Link layer of the OSI model?

37
Q

86: (p.45) What does MAC stand for?

A

media access control

38
Q

87: (p.45) How does a typical laptop computer discover its own MAC ad-
dress?

A

It already knows it. It is burned in on the network card.

39
Q

88: (p.45) At which OSI layer is the Local Area Network?

A

2 or datalink

40
Q

89: (p.45) At which OSI layer is MAC Addressing?

A

2 or datalink

41
Q

90: (p.45) At which OSI layer is Physical Addressing?

A

2 or datalink

42
Q

91: (p.45) At which OSI layer is Ethernet?

A

2 or datalink

43
Q

92: (p.45) At which OSI layer does a switch operate?

A

2 or datalink

44
Q

93: (p.45) At which OSI layer does a bridge operate?

A

2 or datalink

45
Q

94: (p.46) What is a multi-port bridge called?

46
Q

95: (p.46) What is a two-port switch called?

47
Q

96: (p.46) At which OSI layer do we nd frames?

A

2 or datalink

48
Q

97: (p.46) What is the Protocol Data Unit at OSI layer 2?

49
Q

98: (p.46) What is layer 1 of the OSI model?

50
Q

99: (p.46) What layer number is the Physical layer of the OSI model?

51
Q

100: (p.47) At which OSI layer is wireless signal?

A

1 or physical

52
Q

101: (p.47) At which OSI layer is coaxial cable?

A

1 or physical

53
Q

102: (p.47) At which OSI layer is cat5 cable?

A

1 or physical

54
Q

103: (p.47) At which OSI layer is ber-optic cable?

A

1 or physical

55
Q

104: (p.47) What is a multi-port repeater called?

56
Q

105: (p.47) What is a two-port hub called?

57
Q

106: (p.47) At which OSI layer does a hub operate?

A

1 or physical

58
Q

107: (p.47) At which OSI layer does a signal repeater operate?

A

1 or physical

59
Q

108: (p.48) At which OSI layer do we nd bits?

A

1 or physical

60
Q

109: (p.48) What is the Protocol Data Unit at OSI layer 1?

61
Q

110: (p.52) What is a software port?

A

A port is a number that indicates which computer program should receive
the message.

62
Q

111: (p.56) What is a hop?

A

A hop is the moving of a packet from one LAN to another.
A hop is the activity performed by a router when it receives a packet on one
local area network, and passes it across to a dierent local area network,
one step closer to its nal destination.

63
Q

112: (p.57) What does TTL stand for?

A

time to live

64
Q

113: (p.57) What is the purpose of TTL?

A

It reduces the risk of network loops.

65
Q

114: (p.59) What does having a routable address mean?

A

Packets can be sent to you across the Internet just using your own IP
address.

66
Q

115: (p.60) What are the ve non-routable IP address blocks?

A

10.x.x.x, 127.x.x.x, 169.254.x.x, 172.16-31.x.x, and 192.168.x.x.

67
Q

116: (p.60) What does NAT stand for?

A

network address translation

68
Q

117: (p.60) What does PAT stand for?

A

port address translation
PAT is another name for Network Address Translation. NAT is the generally
used terminology.

69
Q

118: (p.61) Explain Man In The Middle?

A

Man in the middle is (a) a hacking technique. (b) Two computers believe
they are talking to each other. (c) Instead they are talking through (by
way of) a third computer.

70
Q

119: (p.63) In NAT, how does the router remember the original sender?

A

The router keeps a table that matches outside port numbers with inside
IP address and port number pairs.

71
Q

120: (p.63) What is garbage collection?

A

Reclaiming resources that are no longer in use.

72
Q

121: (p.64) How long do NAT address pool entries last?

A

Address pool entries often expire (a) after ten minutes, or (b) when the
table is full the most stale entry expires.

73
Q

122: (p.64) What is a keep-alive?

A

A keep-alive is a message that is sent between two computers just to keep
the connection from timing out and being dropped.

74
Q

123: (p.68) What does DMZ stand for?

A

demilitarized zone
Port forwarding can be set up with triggers, but it’s still tricky.
These methods are really a last resort. They work but they are dicult to
set up and use.

280 networking (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions