Business Data Communications and Networking 14th edition by Jerry FitzGerald Test bank
Difficulty: Hard
Reference: Networking Models
L.O.: Understand the role of network layers
- The fourth layer of the OSI model is called the __________ layer.
a. network
b. transport
c. session
d. data link
e. presentation
Answer: b
Difficulty: Easy
Reference: Networking Models
L.O.: Understand the role of network layers
- ___________ is an orderly close to a dialogue between end users.
a. Session termination
b. Physical bits
c. Frame overhead
d. Packet encapsulation
e. Message encryption
Answer: a
Difficulty: Hard
Reference: Networking Models
L.O.: Understand the role of network layers
- The _________ layer performs error checking which is redundant to some extent with the function of the _________ layer.
a. application, presentation
b. physical, data link
c. transport, data link
d. presentation, transport
e. network, physical
Answer: c
Difficulty: Medium
Reference: Networking Models
L.O.: Understand the role of network layers
- Which is not a function of the physical layer:
a. transmission of bits.
b. defining the rules by which one and zeroes are transmitted.
c. providing error-free transmission of data.
d. providing the physical connection between sender and receiver.
e. specifying the type of connection and type of signals, waves or pulses that pass through it.
Answer: c
Difficulty: Hard
Reference: Networking Models
L.O.: Understand the role of network layers
- The _________ layer is responsible for routing of messages from the sender to the final destination.
a. data communication layer
b. resident layer
c. application layer
d. network layer
e. physical layer
Answer: d
Difficulty: Easy
Reference: Networking Models
L.O.: Understand the role of network layers
- Which of the following is not a function of the data link layer?
a. deciding when to transmit messages over the media
b. formatting the message by indicating where messages start and end, and which part is the address
c. detecting and correcting any errors that have occurred in the transmission of the message
d. specifying the type of connection, and the electrical signals, radio waves, or light pulses that pass through it
e. controlling the physical layer by determining when to transmit
Answer: d
Difficulty: Easy
Reference: Networking Models
L.O.: Understand the role of network layers