Introduction to Data Communications

_____ are rules that govern a communication exchange

• media

• criteria

• protocols

• OSI

The ______ is the physical path over which a message travels

• protocol

• medium

• signal

• wire

Frequency of failure and network recovery time after a failure are measures of the ____of a network

• performance

• reliability

• security

• feasibility

The performance of a data communications network depends on ____

• the number of users

• the transmission media

• the hardware and software

• all of the above

Viruses are a network ____ issue

• performance

• reliability

• security

• economic viability

Which agency created standards for telephone communications and for network interfaces and public networks?

• AT&T

• ITU-T

• ANSI

• ISO

The information to be communicated in a data communication system is the ____

• medium

• protocol

• message

• transmission

_____ is the division of one task among multiple computers

• distributed processing

• distributed messaging

• distributed telephony

• Electronic messaging

If a protocol specifies that data should be sent at 100 Mbps, this is a ___ issue.

• syntax

• semantics

• timing

• none of the above

When a protocol specifies that the address of the sender must occupy the first four bytes of a message, this is a ___ issue.

• syntax

• semantics

• timing

• none of the answers