CompTIA Network+: OSI Model Layers & Data Encapsulation

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

-Encryption -Compression

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

-HTTP -SMTP

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

-It is expressed using a 12-character hexadecimal value -It is unique to every network interface -It is a static address that can't be changed

A fixed payload typically has which benefits or characteristics?

-They can be more efficient than variable payloads -They are always the same size

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

IP Address

Which statement correctly characterizes the functions of the OSI Model?

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

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

Ping

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

Port

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

Routing

Which type of communication would be analogous to a half duplex transmission?

Two people using walkie-talkies

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

Connection-oriented and TCP

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

FIN