CompTIA Network+: OSI Model Layers & Data Encapsulation

Question 1

Which statement correctly characterizes the functions of the OSI Model?

Answer 1

It is a method of describing the functions of a networking system to allow communication

Question 2

Which device or service would not operate at the physical layer of the OSI Model?

Answer 2

IP Address

Question 3

The physical address applied by the data link layer of the OSI Model has which features?

Answer 3

It is variable address that can be changed

Question 4

Which type of traffic management service occurs at the network layer of the OSI Model?

Answer 4

Routing

Question 5

If you needed to be certain that your data transmissions are being received, which type of connection and protocol should be used?

Answer 5

Connection-oriented and TCP

Question 6

Which type of communication would be analogous to a simplex transmission?

Answer 6

Two people using walkie-talkies

Question 7

Which common services occur at the presentation layer of the OSI Model?

Answer 7

Compression

Encryption

Question 8

Which protocols operate at the application layer of the OSI Model?

Answer 8

SMTP

HTTP

Question 9

The TCP header specifies which value to ensure that data is processed by the correct application?

Answer 9

Port

Question 10

Which TCP flag is used to gracefully terminate a session between two systems?

Answer 10

FIN

Question 11

A fixed payload typically has which benefits or characteristics?

Answer 11

They are always the same size

They can be more efficient than variable payloads

Question 12

Which command can be used to determine the MTU optimal size?

Answer 12

Ping