Exam 6: Telecommunications and Networks

3G wireless communications supports wireless voice and broadband speed data communications in a mobile environment at speeds of 2 to 4 Mbps.

_____ is a form of short-range communications that employs extremely short electromagnetic pulses lasting just 50 to 1,000 picoseconds that are transmitted across a broad range of radio frequencies of several gigahertz.

The growth in wireless data traffic is expected to increase modestly over the time period 2013 to 2017.

A telecommunications protocol is any material substance that carries an electronic signal to support communications between a sending and receiving device.

Which of the following provides a simple and consistent user experience across all types of communications, such as instant messaging, fixed and mobile phone, email, voice mail, and web conferencing?

4G will deliver 3 to 20 times the speed of 3G networks for mobile devices.

Twisted-pair wire offers cleaner and crisper data transmission (less noise) than coaxial cable and also a higher data transmission rate.

The computers and devices on a network are also known as _____.

In a(n) _____ network, no fixed path is created between the communicating devices, and the data is broken into packets for sending over the network.

Which of the following statements is true of network-management software?

_____ refers to the electronic transmission of signals for communications by means such as telephone, radio, and television.

In a circuit-switching network, no fixed path is created between the communicating devices, and the data is broken into packets for sending over the network.

Telecommunications is creating profound changes in business because it strengthens the barriers of time and distance.

A(n) _____ is a telephone facility that manages incoming calls, handling them based on the number called and an associated database of instructions.

A(n) _____ is a satellite ground station with a dish antenna smaller than 3 meters in diameter.

A _____ is a telecommunications hardware device that converts communications signals so they can be transmitted over the communication media.

With centralized processing, multiple computer platforms are dedicated to special functions, such as database management, printing, communications, and program execution.

______ service is a communications solution that delivers recorded emergency notifications to users in a selected geographic area.

A virtual private network (VPN) supports a secure, encrypted connection between a company's employees and remote users through a third-party service provider.

Modems can dial telephone numbers, originate message sending, and answer incoming calls and messages.