Deck 2: Network Standards

Question 1

In HTTP,a server may initiate an interaction with the client.

Answer 1

False

Question 2

If the destination host does not receive a segment,it will ________.

A)transmit an ACK segment
B)transmit a NAC segment
C)transmit an RSND segment
D)none of the above

Answer 2

D

Question 3

Which of the following is not one of the three general parts of messages?

A)address field
B)header
C)data field
D)trailer

Answer 3

A

Question 4

The meaning of a message is referred to as the message's ________.

A)protocol
B)order
C)value
D)semantics

Question 5

Ethernet MAC addresses are ________.

A)32 bits long
B)48 bits long
C)128 bits long
D)none of the above

Question 6

The header is defined as everything that comes before the data field.

Question 7

Host P transmits a SYN 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

Question 8

The ________ contains the content being delivered by a message.

A)address field
B)header
C)data field
D)trailer

Question 9

Messages always have data fields.

Question 10

Headers usually are divided into fields.

Question 11

How a message is organized is its ________.

A)syntax
B)semantics
C)order
D)both A and B

Question 12

Most messages have trailers.

Question 13

If the destination host receives a segment that has an error,it will ________.

A)transmit an ACK segment
B)transmit a NAC segment
C)transmit an RST segment
D)none of the above

Question 14

Standards govern ________.

A)semantics
B)syntax
C)both A and B
D)neither A nor B

Question 15

Network standards are also called protocols.

Question 16

The trailer is defined as everything that comes after the data field.

Question 17

The side wishing to close a TCP segment sends a(n)________ segment.

A)SYN
B)ACK
C)FIN
D)none of the above

Question 18

After the side wishing to close a TCP connection sends a FIN segment,it will ________.

A)not send any more segments
B)only send ACK segments
C)only send FIN segments
D)none of the above

Question 19

"Octet" is the same as ________.

A)"bit"
B)"byte"
C)either A or B, depending on the context
D)neither A nor B

Question 20

A sending host will retransmit a TCP segment if ________.

A)it receives an ACK segment
B)it receives a NAC segment
C)it receives an RPT segment.
D)none of the above

Question 21

Ethernet does ________.

A)error detection
B)error correction
C)both A and B
D)neither A nor B

Question 22

Ethernet detects errors but does not correct them.Therefore,Ethernet is reliable.

Question 23

Which of the following has a header checksum field?

A)TCP
B)UDP
C)both A and B
D)neither A nor B

Question 24

How long are IPv4 addresses?

A)4 octets
B)6 octets
C)20 octets
D)32 octets

Question 25

How long are IPv4 addresses?

A)32 octets
B)48 bits
C)20 octets
D)none of the above

Question 26

Ethernet MAC addresses are ________ long.

A)4 octets
B)6 octets
C)32 octets
D)48 octets

Question 27

IP detects errors but does not correct them.Therefore,IP is reliable.

Question 28

TCP messages are called ________.

Question 29

________ read(s)the destination MAC address in an Ethernet frame.

A)The destination host
B)Switches in the network
C)Both A and B
D)Neither A nor B

Question 30

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

Question 31

One-bit fields in headers are called ________ fields.

A)digital
B)flag
C)ACK
D)none of the above

Question 32

If someone says that a 1-bit flag is set,this means that it is given the value ________.

A)0
B)1
C)either A or B
D)neither A nor B

Question 33

Routers make forward decisions based on a packet's source IP address.

Question 34

IP is reliable.

Question 35

If the ACK bit is set,the acknowledgement number field MUST have a value.

Question 36

Routers make packet forwarding decisions based on a packet's ________.

A)source IP address
B)destination IP address
C)both A and B

Question 37

In an IP header,the first bit in the second row is bit ________.

A)0
B)31
C)32
D)none of the above

Question 38

UDP checks messages for errors but does not correct them.UDP is ________.

A)reliable
B)unreliable
C)both A and B
D)neither A nor B

Question 39

If the destination host finds an error in an Ethernet frame,it ________.

A)sends back a NAK
B)retransmits the frame
C)both A and B
D)neither A nor B

Question 40

To handle internetwork transmission control tasks that IP cannot handle,the IETF created TCP.

Question 41

Binary counting usually begins at 1.

Question 42

Which layer has more standards?

A)internet
B)application
C)Both of the above have about the same number of standards.

Question 43

At which layer would you find standards for requesting videos from a video sharing site such as YouTube?

A)application
B)transport
C)internet
D)none of the above

Question 44

The range 1024 to 4999 is the usual range for ________ port numbers.

A)well-known
B)ephemeral
C)both A and B

Question 45

An HTTP request message usually has a ________.

A)header
B)data field
C)both A and B
D)neither A nor B

Question 46

In binary,13 is 1101.What is 14?

A)1110
B)1111
C)neither A nor B

Question 47

Nearly all application standards are simple like HTTP.

Question 48

The application layer standard always is HTTP.

Question 49

At what layer is encoding done?

A)application
B)transport
C)internet
D)none of the above

Question 50

Converting application messages into bits is called ________.

A)encapsulation
B)encryption
C)encoding
D)conversion

Question 51

In HTTP,the end of a header field is indicated by a ________.

A)byte position
B)CRLF
C)colon
D)blank line

Question 52

An IP address,a colon,and a port number constitute a(n)________.

A)well-known port number
B)ephemeral port number
C)connection
D)socket

Question 53

2500 is in the range for ________ port numbers.

A)well-known
B)ephemeral
C)both A and B
D)neither A nor B

Question 54

At which layer would you find file transfer protocol standards for downloading files?

A)application
B)transport
C)internet
D)none of the above

Question 55

On a client,ephemeral port numbers indicate ________.

A)applications
B)connections with servers
C)both A and B
D)neither A nor B

Question 56

How many bytes will it take to transmit "Brain Dead" without the quotation marks?

A)2
B)3
C)9
D)none of the above

Question 57

How many bytes will it take to transmit "Can you hear me now?" without the quotation marks?

A)5
B)6
C)10
D)none of the above

Question 58

An HTTP response message usually has a ________.

A)trailer
B)data field
C)both A and B
D)neither A nor B

Question 59

In HTTP,most response message header fields consist of a keyword,an equal sign,and the value for the keyword.

Question 60

Which of the following layers has the most standards?

A)data link
B)internet
C)transport
D)application

Question 61

A corporate network can use either OSI standards at all layers or TCP/IP standards at all layers,but cannot use OSI standards at some layers and TCP/IP standards at other layers.

Question 62

Which of the following is a network standards architecture?

A)ISO
B)TCP/IP
C)both A and B
D)neither A nor B

Question 63

If you have a field with N bits,you can represent N2 items.

Question 64

A 7-bit field can represent ________ alternatives.

A)14
B)49
C)128
D)256

Question 65

A codec ________.

A)encodes voice signals into analog signals
B)encodes voice signals into binary signals
C)compresses the signal
D)both B and C

Question 66

To represent 65 alternatives,your alternatives field would have to be ________ bits long.

A)5
B)6
C)7
D)8

Question 67

OSI is dominant at the ________ layer.

A)internet
B)transport
C)both A and B
D)neither A nor B

Question 68

Network standards architectures break the standards functionality needed for communication into layers and define the functions of each layer.

Question 69

After the internet layer process does encapsulation,it passes the IP packet to the ________ layer process.

A)transport
B)data link
C)physical
D)none of the above

Question 70

A 5-bit field can represent ________ alternatives.

A)8
B)16
C)32
D)64

Question 71

After the data link layer process does encapsulation,it passes the IP packet to the ________ layer process.

A)physical
B)internet
C)transport
D)none of the above

Question 72

Which of the following is a network standards architecture?

A)ISO
B)OSI
C)both A and B
D)neither A nor B

Question 73

________ is placing a message in the data field of another message.

A)Nesting
B)Vertical communication
C)Layering
D)Encapsulation

Question 74

Which layer process does not do encapsulation when an application layer process transmits a message?

A)physical
B)data link
C)internet
D)All do encapsulation.

Question 75

Which of the following is a standards agency for OSI?

A)IETF
B)ITU-T
C)both A and B
D)neither A nor B

Question 76

OSI is dominant at the ________ layer.

A)physical
B)internet
C)both A and B
D)neither A nor B

Question 77

OSI is dominant at the ________ layer.

A)data link
B)transport
C)both A and B
D)neither A nor B

Question 78

The electrical signal generated by a microphone is called a(n)________ signal.

A)binary
B)digital
C)analog
D)either A or B

Question 79

What is the dominant network standards architecture in most real firms today?

A)OSI
B)TCP/IP
C)neither A nor B

Question 80

Increasing an alternatives field length by one bit always doubles the number of alternatives it can represent.