Exam 1: Introduction to Computer Networks and Data Communications

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

The ____ layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted.

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

______________________________ is used to transfer files from one computer system to another.

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.

A modem and a dial-up telephone service provides data transfer rates of approximately ____.

_________________________ are backup points that are used in case of errors or failures.

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

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

The ____ in a network architecture define a model for the functions or services that need to be performed.

The ____ layer of the OSI model performs end-to-end error control and end-to-end flow control.

The lowest layer of the TCP/IP protocol suite is the network access or physcial layer.

What are the components of a wide area network?

The addition of control information to a packet as it moves through the layers is called ____.

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.

The ____________________ protocol suite incorporates the TCP and IP protocols and has in fact always been more popular than the OSI model.

The International Organization for Standardization (ISO) created the ____ reference model in an attempt to standardize the design of communication systems and the interoperability between their components.

The ______________ layer of the TCP/IP protocol suite is responsible for making sure that what leaves one end of the network arrives at the other end of the network exactly the same.

____ is the design, installation, and support of a network and its hardware and software.

The network layer of the OSI model is an end-to-end layer.