Chapter 2
The side wishing to close a TCP segment sends a(n) ________ segment.
FIN
Ethernet detects errors but does not correct them. Therefore, Ethernet is reliable.
False
True or False 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.
False
True or False, Binary counting usually begins at 1.
False
True or False, IP is reliable
False
True or False, Nearly all application standards are simple, like HTTP.
False
True or false, IP is reliable
False
True or false, If you have a field with N bits, you can represent N2 items.
False
True or false, Nearly all application standards are simple, like HTTP.
False
True or false, Routers make forward decisions based on a packet's source IP address
False
Which of the following is a standards agency for TCP/IP?
IETF
Which of the following is a standard? TCP/IP IP
IP
Which of the following is a standards agency for OSI?
ITU-T
Which of the following is NOT an OSI layer name?
Internet
Which of the following is a network standards architecture? ISO TCP/IP
Both
Which of the following is a network standards architecture?
Both ISO and OSI
Which of the following is a network standards architecture? ISO TCP/IP
Both ISO and TCP/IP
OSI is dominant at the ________ layer.
Both internet and transport
TCP/IP is dominant at the ________ layer(s). Physical Data Link
Both physical and data link
In HTTP, the end of a header field is indicated by a ________.
CRLF
True or false
Messages always have data fields.
If the destination host finds an error in an Ethernet frame, it ________.
Neither sends back a NAK nor retransmits the frame
Which of the following protocol is reliable NCP IP UDP TCP
TCP
After the side wishing to close a TCP connection sends a FIN segment, it will ________.
only send ACK segments
True or false, If the ACK bit is set, the acknowledgement number field MUST have a value.
true
True or false, In HTTP, most response message header fields consist of a keyword, an equal sign, and the value for the keyword.
true
True or False, Network standards architectures break the standards functionality needed for communication into layers and define the functions of each layer.
True
True or False, The trailer is defined as everything that comes after the data field
True
True or false, Headers usually are divided into fields.
True
True or false, Increasing an alternatives field length by one bit always doubles the number of alternatives it can represent.
True
True or false, The header is defined as everything that comes before the data field.
True
Which of the following layers has the most standards?
Application
True or false, Headers usually are divided into fields.
true
At which layer would you find standards for requesting videos from a video sharing site such as YouTube?
Application
In binary, 13 is 1101. What is 14?
1110
A 5-bit field can represent ________ alternatives.
32
In an IP header, the first bit in the second row is bit ________.
32
At which layer would you find file transfer protocol standards for downloading files?
Application
How many bytes will it take to transmit "Brain Dead" without the quotation marks? 2 3 9
None of these
Which standards architecture is dominant at the application layer? OSI TCP/IP IEEE
None of these
Switched WAN transmission is governed by ________ standards.
OSI
What is the dominant network standards architecture in most real firms today?
OSI
Which standards architecture is dominant at the application layer?
OSI
Wireless LAN transmission normally is governed by ________ standards.
OSI
OSI is dominant at the ________ layer.
Physical
Which layer process does not do encapsulation when an application layer process transmits a message?
Physical
Most IETF documents are called ________.
RFC's
Which of the following is not one of the three general parts of messages? Address Header Data field Trailer
Trailer
The OSI presentation layer is actually used ________.
as a category for data file standards used by multiple applications
________ read(s) the destination MAC address in an Ethernet frame. The destination host Switches in the network
both
Standards govern ________.
both semantics and syntax
On a client, ephemeral port numbers indicate ________.
connections with servers
OSI is dominant at the ________ layer.
data link
Converting application messages into bits is called ________.
encoding
The range 1024 to 4999 is the usual range for ________ port numbers.
ephemeral
True or false, Ethernet detects errors but does not correct them. Therefore, Ethernet is reliable.
false
How many bytes will it take to transmit "Can you hear me now?" without the quotation marks? 5 6 10
none of these
TCP/IP became dominant in corporations primarily because of ________.
its relatively simple standards, which led to low costs
Ethernet does ________.
neither error detection nor error correction
6,000 is in the range for ________ port numbers.
neither well-known nor ephemral
If the destination host receives a segment that has an error, it will ________. ACK NAC RST
none
TCP messages are called ________. frames fragments packets
none
If the destination host does not receive a segment, it will ________. transmit an ACK segment Transmit a NAC segment transmit a RSND segment
none of the above
How long are IPv4 addresses? 32 octets 48 bits 20 octets
none of these
After the data link layer process does encapsulation, it passes the IP packet to the ________ layer process.
physical
The OSI ________ layer is designed to handle data formatting differences between two computers.
presentation
The meaning of a message is referred to as the message's ________.
semantics
The OSI ________ layer allows application communication to be restarted at the last rollback point.
session
TCP/IP is dominant at the ________ layer(s)
transport