Exam 1: Introduction to Computer Networks and Data Communications

The _________________________ is the software that prepares a packet of data so that it can move from one network to another on the Internet or within a set of corporate networks.

____________________ are sets of rules used by communication devices.

A ____ is a high-speed network that interconnects multiple sites within a close geographic region,such as a large urban area.

The application layer of the OSI model is responsible for token management.

The ____________________ connection is the only direct connection between sender and receiver and is at the physical layer,where actual 1s and 0s are transmitted over wires or airwaves.

The session layer of the OSI model is responsible for establishing synchronization points.

Computer networks that use radio waves are termed ____________________ and can involve broadcast radio,microwaves,or satellite transmissions.

What is data communications?

In a network architecture,as the packet moves up through the layers,the data packet shrinks in size.

The ____________________ layer of the OSI model is responsible for establishing sessions between users.

One of the most explosive areas of growth in recent years has been cellular phone networks.

The ____________________ layer of the OSI model is responsible for creating,maintaining,and ending network connections.

The Internet is not a single network but a collection of thousands of networks.

In a(n)____ system,a user at a microcomputer,or client machine,issues a request for some form of data or service.

SNMP is used to allow users to send and receive electronic mail.

The ____ was not created by a standards-making organization but by a group of computer scientists.

The Internet "talks" only ____,so users must use software that supports this protocol.

The top layer in the OSI model is the ____________________ layer,where the application using the network resides.

What are the benefits of a microcomputer-to-local area network connection?

The TCP/IP ____ layer commonly uses the Transmission Control Protocol (TCP)to maintain an error-free end-to-end connection.