Exam 6: Telecommunications and Networks

Skype users can call to any non-computer-based landline or mobile telephone in the world for just pennies a minute.

In the X.25 protocol, packets are _____ characters long, while in frame relay technology they are of variable length.

_______________ systems are information systems that use common standards for hardware, software, applications, and networking.

Fiber optics are regarded as the communications media of the future, primarily due to its _______________.

In frequency division multiplexing (FDM), a multiplexer effectively divides one high-speed channel into multiple high-speed channels.

Which of the following technologies transmits data at the fastest rate?

Software that is installed on intranet Web servers can be accessed by employees within the company or by external business partners who are using Web browsers, if access is allowed by the company.

Although we tend to think of the FCC as the oversight body for radio and television, it is equally involved in all aspects of data and voice communications.

_______________ are the most common type of communications processor.

The Internet is owned by the government of the United States.

PCS phone systems cost substantially more to operate and use than cellular systems, but have lower power consumption requirements.

A communications medium that consists of one or more central wires surrounded by thick insulation is called _______________ cable.

Applications that use the Internet and Internet-based technologies are typically less expensive to _______________ than traditional systems.

Thin clients provide a browser-based user interface for processing small application programs called _______________.

Network computing is sometimes called a _______________ client/server model, because it consists of thin clients, application servers, and database servers.

Most companies are building e-business and e-commerce websites to achieve all of the following goals except:

Narrow-band channels typically use microwave, fiber optics, or satellite transmission.

Devices such as modems, switches, and routers, which support data transmission and reception between terminals and computers, are known as telecommunications _______________.

Newly developed optical routers will be able to send optical signals up to 2,500 miles without regeneration.

In an OSI model, the _______________ layer does the routing and forwarding.