Exam 6: Business Networks and Telecommunications

Some experts see the future of telephony in a convergence of the cell phone and ____.

There are two basic types of networks: LANs and MANs.

The process of associating a character-based name such as course.com with an IP address is called domain name resolution,and the domain name resolution service is DNS (Domain Name System).

With ____,data remains digital throughout the entire transmission.

Discuss electrical power lines as a type of communications medium.

Networking professionals often refer to generations of mobile communication technologies.

____ is a standard for software that digitizes and compresses voice signals and transmits the bits via the Internet link.

A peer-to-peer LAN is one in which no central device controls communications.

When a call is placed on a cellular phone,the signal is first transmitted to the closest ____,which sends a signal through landlines that dial the desired phone number.

____________________ is sometimes called TV cable or simply "cable" because of its common use for cable television transmission.

Because light is not susceptible to EMI (electromagnetic interference)and ____________________,fiber optic communication is much less prone to error than twisted pair and radio transmission.

Even if ____ service availability is to lag far behind cable and optical fiber in terms of subscribers and revenue,utility companies are likely to invest in the technology for their own use.

MBWA is point-to-point transmission between two stationary devices,usually between two buildings,as opposed to mobile wireless,in which people carry a mobile device.

What is the main drawback of wireless LANs?

The differences among generations in mobile communications are mainly in capabilities and ____.

A portable digital music and video player can use ____ to communicate with your PC or another device (possibly another music/video player)to download files.

With cellular phone networks,if the receiving phone is also mobile,the call is communicated to the ____ closest to the destination phone.

Internet relay is a high-speed packet-switching protocol used in WANs.

In office LANs,one computer is often used as a central repository of programs and files that all connected computers can use; this computer is called a(n)____________________.

IEEE 802.3,known as ____________________,is the only LAN protocol of significance.