Which one of the following is a TRUE statement about the bottom three layers of the Open
Systems Interconnection (OSI) Reference Model?
A.
They generally pertain to the characteristics of the communicating end systems.
B.
They cover synchronization and error control of network data transmissions.
C.
They support and manage file transfer and distribute process resources.
D.
They support components necessary to transmit network messages.
Explanation:
By exclusion:
Not A.
“The Session layer (layer 5) is responsible for establish, maintaining, and terminating
communication sessions between two computers.” Pg 79 Tittel: CISSP Study Guide.
Not B.
“The Transport layer (layer 4) ….This layer includes mechanisms for segmentation, sequencing,
error checking, controlling the flow of data, error correction and network service optimization.” Pg
79 Tittel: CISSP Study Guide.
Not C.
“The Application itself it is not located within this layer [Application]; rather the protocols and
services required to transmit files, exchange messages, connect to remote terminals, and so on
are here.” Pg. 80 Tittel: CISSP Study Guide.