Exam 9: Communications and Networks

Each token ring network has several tokens.

The most popular T-carrier line is the ____________________ line.

Using a dial-up line to connect computers costs more than making a regular telephone call.

Fiber-optic cables have the capability of carrying significantly more signals than wire cables.

For hot spots that charge users, what do access fees average?

Critical Thinking Questions Case 9-2 The area of network communications standards is an area with which you are not familiar, so you have decided to study it in some detail. You expect to have to network a wide range of devices in the near future, so this is a timely subject of study. You are looking for a technology that will replace the requirement for a line-of-sight transmission between devices like digital cameras, fax machines, and printers, and you would also like the data transfers between the devices to occur at a rate of up to 3 Mbps. Which of the following network standards is a good match for your needs?

COGNITIVE ASSESSMENT SMS is another term for which type of communication?

Which of the following is a collection of computers and devices connected together via communications devices and transmission media?

Which of the following is a software application that helps groups of people work together on projects and share information over a network?

Computer communications describes a process in which two or more computers or devices transfer which of the following?

The amount of data, instructions, and information that can travel over a communications channel sometimes is called which of the following?

For the small business and home user, an ISDN line provides slower transfer rates than dial-up telephone lines.

A star network consists of a single central cable, to which all computers and other devices connect.

Wireless transmission media are used when it is inconvenient or impossible to install cables.

Bus networks are unpopular on LANs because they are expensive and difficult to install.

COGNITIVE ASSESSMENT What is geocaching?

COGNITIVE ASSESSMENT How are standards such as EDI used by businesses?

Which of the following terms is an electrical disturbance that can degrade communications?

A(n) ____________________ line is equal in speed to 28 T1 lines but quite expensive.

The design of computers, devices, and media in a network is categorized as either client/server or peer-to-peer. What is the term used to refer to this characterization?