Business Data Communication and Networks test bank
A) packetizing B) error and flow control
C) medium access control
The data link layer is responsible for _______ delivery.
C) hop-to-hop The data packet at the data link layer is usually called a _______.
A) frame The protocol for obtaining the physical address of a node when the IP address is known is called _______.
A signal can lose energy due to the resistance of the medium. This is called _______.
D) attenuation _______ can cause errors during data transmission.
Which of the following best describes a single-bit error?
A single bit is inverted per data unit.
If the ASCII character G is sent and …show more content…
When data are transmitted from device A to device B, the header from A's layer 4 is read by B's _______ layer.
The _______ layer changes bits into electromagnetic signals.
Which of the following is an application layer service?
File transfer and access
Why was the OSI model developed?
Standards were needed to allow any two systems to communicate
The _______ model shows how the network functions of a computer ought to be organized.
The physical layer is concerned with the movement of _______ over the physical medium.
D) bits The OSI model consists of _______ layers.
C) seven In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______.
B) removed In the OSI model, when data is transmitted from device A to device B, the header from A's layer 5 is read by B's _______ layer.
C) session In the OSI model, what is the main function of the transport layer?
B) process-to-process message delivery
In the OSI model, encryption and decryption are functions of the ________ layer.
C) presentation When a host on network A sends a message to a host on network B, which address does the router look at?
B) logical To deliver a message to the correct application program running on a host, the _______ address must be consulted.
A) port IPv6 has _______ -bit addresses.
ICMPv6 includes _______.
The ______ layer is