IS435

1) ISPs \________.
A) carry traffic on the Internet
B) connect users to the Internet
C) both A and B
D) neither A nor B

C

1) ISPs \________.
A) carry traffic on the Internet
B) connect users to the Internet
C) both A and B
D) neither A nor B

C

2) We call any device connected to the Internet a(n) \________.
A) IP
B) client
C) router
D) host

D

3) Who owns the Internet?
A) The U.S. Government
B) The United Nations
C) The IETF
D) No one

D

4) The IETF primarily \________.
A) manages the Internet
B) creates Internet standards
C) coordinates the work of ISPs
D) all of the above

B

5) When you use your tablet to access the internet, the tablet is a \________.
A) client host
B) server host
C) both A and B
D) neither A nor B

A

6) What process adds a header in front of an application message or fragment?
A) application
B) transport
C) internet
D) data link

B

7) What process adds a header in front of a TCP segment?
A) Application
B) Transport
C) Internet
D) Data Link

C

8) When a frame arrives, the data link process on the destination host \________.
A) adds a header
B) removes a header
C) both A and B
D) neither A nor B

B

9) The transport layer on the destination host \________.
A) reassembles the application message if it has been fragmented
B) removes the transport header
C) both A and B
D) neither A nor B

C

10) IPv4 addresses are \________ bits long.
A) 32
B) 64
C) 128
D) none of the above

A

11) Routing is based on a(n) \________.
A) IP address
B) single-network address
C) either A or B
D) neither A nor B

A

12) Paths across a single network are called \________.
A) routes
B) data links
C) physical links
D) none of the above

B

13) If there are 10 routers between the source and destination hosts, how many transport
processes will be involved on all devices?
A) 1
B) 2
C) 10
D) 12

B

14) If there are 10 routers between the source and destination hosts, how many internet processes
will be involved on all devices?
A) 1
B) 2
C) 10
D) 12

D

15) Which of the following is an Internet supervisory protocol?
A) DNS
B) IP
C) both A and B
D) neither A nor B

A

16) In a point-to-point single network, how many physical links will there be when a packet is
transmitted?
A) 0
B) 1
C) 2
D) We cannot say with the information provided.

B

17) Which of the following is true?
A) Frames are carried inside packets.
B) Packets are carried inside frames.
C) both A and B
D) neither A nor B

B

18) A host sends a packet to another host containing seven single networks along the way. How
many other hosts will there be along the route when Host A transmits?
A) 1
B) 2
C) 7
D) 9

A

19) A host sends a packet to another host containing six single networks along the way. How
many data links are used for this transmission?
A) 1
B) 6
C) 7
D) 8

B

20) A host sends a packet to another host containing six single networks along the way. How
many routes are included in this transmission?
A) 1
B) 6
C) 7
D) 8

A

21) A host sends a packet to another host with six single networks along the way. How many
frames are involved?
A) 1
B) 6
C) 7
D) 8

B

22) Source and destination EUI-48 (or MAC) addresses are found in \________ headers.
A) IP
B) frame
C) TCP
D) UDP

B

23) \________ have DHCP servers.
A) Home access routers
B) Internet core routers
C) both A and B
D) neither A nor B

A

24) Internet standards are published as \________.
A) RFCs
B) IETFs
C) TCP/IPs
D) Internet Protocols

A

25) Network standards provide \________.
A) strobing
B) synchronization
C) interoperability
D) entanglement

C

26) Which standards agency is especially important for internet processes?
A) ITU-T
B) IETF
C) Both A and B are about equally important.
D) Neither A nor B is important.

B

27) A standards agency for OSI is \________.
A) ITU-T
B) IETF
C) both A and B
D) neither A nor B

A

28) Which layer governs wires?
A) transport
B) physical
C) Internet
D) none of the above

B

29) Which standards layer governs e-mail?
A) data link
B) transport
C) Internet
D) none of the above

D

30) Which standards layer governs multiuser word processing programs?
A) data link
B) transport
C) Internet
D) none of the Above

D

31) Which layer(s) governs transmission through a single network?
A) data link
B) physical
C) both A and B
D) neither A nor B

C

32) At what layer, will you find standards for routers?
A) transport
B) Internet
C) both A and B
D) neither A nor B

B

33) At what layer, will you find standards for access points?
A) physical
B) data link
C) both A and B
D) neither A nor B

C

34) At what layer, will you find standards for switches?
A) application
B) data link
C) transport
D) Internet

B

35) At what layer, will you find standards for frames?
A) application
B) data link
C) transport
D) Internet

B

36) At what layer, will you find standards for IP addresses?
A) application
B) data link
C) transport
D) Internet

D

37) At what layer, will you find standards for routes?
A) application
B) data link
C) transport
D) Internet

D

38) At what layer, will you find standards for EUI-48 addresses?
A) application
B) data link
C) transport
D) Internet

B

39) If two hosts are connected by five networks, how many packets will there be when one host
sends a packet to the other host?
A) 1
B) 2
C) 5
D) 7

A

40) If two hosts are connected by five networks, how many routers will there be when one host
sends a packet to the other host?
A) 1
B) 2
C) 4
D) 5

C

41) If two hosts are connected by five switches, how physical links will there be when one host
sends a packet to the other host?
A) 1
B) 2
C) 5
D) 6

D

42) Host P transmits a SYN segment to Host Q. If host Q is willing to open the connection, it
will transmit a(n) \________ segment.
A) ACK
B) SYN
C) SYN/ACK
D) none of the above

C

43) If a destination host receives a TCP segment with an error, it will transmit \________
A) an ACK segment
B) an NAC segment
C) an RSND segment
D) nothing

D

44) If a destination host receives a correct segment, it will transmit \________.
A) an ACK segment
B) an NAC segment
C) an RSND segment
D) nothing

A

45) In a four-step close, which side transmits a FIN segment?
A) the side that initiates the close
B) the side that does not initiate the close
C) both A and B
D) neither A nor B

C

46) Which of the following is NOT one of the three general parts of messages?
A) address field
B) header
C) data field
D) trailer

A

47) If the destination internet process detects an error, it \________.
A) discards the packet
B) sends back a segment notifying the sender
C) both A and B
D) neither A nor B

A

48) Which of the following is a connectionless protocol?
A) IP
B) TCP
C) both A and B
D) neither A nor B

A

49) If someone says that a 1-bit flag is set, it is given the value \________.
A) 0
B) 1
C) either 0 or 1
D) neither 0 or 1

B

50) The UDP header has \________ fields.
A) 4
B) 8
C) 16
D) 32

A

51) UDP \________.
A) is unreliable
B) has a checksum field
C) both A and B
D) neither A nor B

C

52) On a server, well-known port numbers indicate \________.
A) applications
B) connections with client computers
C) both A and B
D) neither A nor B

A

53) The range of port 1024 to port 4999 is the usual range for \________ port numbers.
A) well-known
B) ephemeral
C) both A and B
D) neither A nor B

B

54) The source socket is 60.171.18.22:2707. The source is a(n) \________.
A) client
B) server
C) well-known server
D) ephemeral server

A

55) The destination socket is 60.171.18.22:161. The destination host is a(n) \________.
A) client
B) server
C) well-known server
D) ephemeral server

B

56) "Octet" is the same as \________.
A) "bit"
B) "byte"
C) either A or B, depending on the context
D) neither A nor B

B

57) Ethernet has a Frame Check Sequence Field to check for errors. Ethernet is \________.
A) reliable
B) unreliable
C) both A and B
D) neither A nor B

B

58) Converting application messages into bits is called \________.
A) encapsulation
B) encryption
C) encoding
D) exchange

C

59) Transmitting "Oh, My!" without the quotes in ASCII requires \________ octets.
A) 2
B) 4
C) 6
D) 7

D

60) Convert decimal 8 to binary.
A) 100
B) 1000
C) 10000
D) 111

B

61) A 5-bit field can represent \________ alternatives or different combinations.
A) 8
B) 16
C) 32
D) 64

C

62) To represent 65 alternatives, your alternatives field would have to be at least \________ bits
long.
A) 5
B) 6
C) 7
D) 8

C

63) The five senses can be represented with a \________-bit field.
A) 2
B) 3
C) 4
D) 5

B

64) In QoS, the S stands for \________.
A) software
B) security
C) service
D) satisfaction

C

65) QoS is quantified through \________.
A) criteria
B) consensus
C) metrics
D) none of the above

C

66) Transmission speed is normally measured in \________.
A) bits per second
B) bytes per second
C) octets per second
D) none of the above

A

67) Throughput is \________.
A) the speed a network actually provides to users
B) a network's rated speed
C) both A and B
D) neither A nor B

A

68) In a coffee shop hot spot, the rated speed is 10 Mbps. Throughput is about half of the rated
speed. There are ten people using the hot spot. If you and three others are transmitting or
receiving at the same time, what speed should you expect to get?
A) 0.5 Mbps
B) 1 Mbps
C) 1.25 Mbps
D) none of the above

C

69) In a coffee shop, there are ten people sharing an access point with a rated speed of 2Gbps.
The throughput is half the rated speed. If each person downloading is getting an average of
200Mbps, how many people are using the Internet at that moment?
A) 10
B) 5
C) 2
D) none of the above

B

70) Trunk lines in the Internet core are \________.
A) dedicated
B) multiplexed
C) both A and B
D) neither A nor B

B

71) The business benefit of multiplexing is \________.
A) lower cost
B) higher speed
C) avoiding the need to send many transmission links through narrow conduits
D) security

A

72) \________ is the percentage of time that a network is available for use.
A) Availability
B) Downtime
C) QoS
D) none of the above

A

73) When a packet travels through a network, the time it takes to get from the sender to the
receiver is called \________.
A) latency
B) output
C) jitter
D) throughput

A

74) Variability in delay is called \________.
A) jitter
B) variance
C) a QoS failure
D) latency

A

75) Guarantees for quality of service are called \________.
A) QoS-G
B) QoS metrics
C) SLAs
D) QoS guarantees

C

76) An SLA specifies the \________.
A) best case
B) worst case
C) both A and B
D) neither A nor B

B

77) An SLA specifies \________.
A) maximum speed
B) minimum speed
C) both A and B
D) neither A nor B

B

78) An SLA specifies \________.
A) maximum latency
B) minimum latency
C) both A and B
D) neither A nor B

A

79) ISPs usually offer QoS guarantees to \________.
A) residential customers
B) business customers
C) both A and B
D) neither A nor B

B

80) \________ can be addressed by using priority.
A) Chronic lacks of capacity
B) Momentary traffic peaks
C) both A and B
D) neither A nor B

B

81) Momentary traffic peaks can lead to \________.
A) latency
B) packet loss
C) both A and B
D) neither A nor B

C

82) To handle momentary traffic peaks, which would you give higher priority to?
A) e-mail
B) VoIP
C) both A and B
D) It is impossible to say with the information provided.

B

83) Traffic shaping may \________ traffic that is undesirable.
A) prohibit
B) limit
C) both A and B
D) neither A nor B

C

84) SNMP agents communicate with the \________.
A) network visibility program
B) network management program
C) MIB
D) all of the above

B

85) To determine if a host is reachable, you send a(n) \________.
A) SNMP SET command
B) MIB
C) trap
D) ping

D

86) Ping tells you \________.
A) that a host is reachable
B) latency in the connection to the host
C) both A and B
D) neither A nor B

C

87) SNMP Set commands can \________.
A) ask agents for information about the managed device
B) change router operation
C) both A and B
D) neither A nor B

B

88) SNMP Get commands can \________.
A) ask agents for information about the managed device
B) change router operation
C) both A and B
D) neither A nor B

A

89) The SNMP manager stores the information it receives from Get commands \________.
A) in the MIB
B) on the agent
C) on the managed device
D) in the cloud

A

90) Using the SNMP Set command \________.
A) saves management labor
B) requires excellent security
C) both A and B
D) neither A nor B

C

91) Using standard configurations \________.
A) saves money
B) gives management agility
C) both A and B
D) neither A nor B

A

92) SDN can \________.
A) permit routing rules to be changed rapidly
B) reduce router costs
C) both A and B
D) neither A nor B

C

93) Creating switching and routing tables is an example of \________.
A) forwarding
B) routing complexity
C) hardwiring
D) control

D

94) Routing packets is an example of \________.
A) forwarding
B) routing complexity
C) hardwiring
D) control

A

95) The general term for evil software is \________.
A) virus
B) worm
C) malware
D) all of the above

C

96) \________ is the general name for a security flaw in a program.
A) A virus
B) Malware
C) A security fault
D) A vulnerability

D

97) Users typically can eliminate a vulnerability in one of their programs by \________.
A) installing a patch
B) using an antivirus program
C) both A and B
D) neither A nor B

A

98) Vulnerability-based attacks that occur before a patch is available are called \________
attacks.
A) indefensible
B) stealth
C) malware
D) zero-day

D

99) What kind of attack is most likely to succeed against a system with no technological
vulnerabilities?
A) malware
B) social engineering
C) both A and B
D) neither A nor B

B