Exam 8: Communications and Networks

A(n) _______ area network is a type of tiny, self-configuring wireless network that works within your immediate surroundings to connect cell phones to headsets, PDAs to other PDAs, and so on.

Microwave communication uses high-frequency _______.

The _______ is the central node that coordinates the flow of data by sending messages directly between the sender and receiver nodes.

All communications between a company's internal networks and the outside world pass through this server.

A(n) _______ network topology does not use a specific physical layout but requires that each node have more than one connection to the other nodes.

The actual connecting or transmission medium that carries the message in a communication system is called the communication _______.

In a communication system, which among the following convert messages into packets that can travel across the communication channel?

_______ cable is a high-frequency transmission medium that has a single solid copper core.

_______ area networks are countrywide and worldwide networks.

Fiber-optic cable transmits data as pulses of light through tiny tubes of glass.

Most firewalls include a special computer called a(n) _______ server to manage communications between the internal networks and the outside world.

A prototype is a set of communication rules for the exchange of information.

Differentiate between analog and digital signals.

The most common standard in LANs is called Ethernet.

TCP/IP protocol involves identifying, sending, and receiving devices and breaking information into small parts for transmission across the Internet.

A firewall is a specialized technology designed to protect an organization's network against external threats.

The range of Wi-Fi networks using microwave connections is being extended over greater distances using a new technology known as _______.

Describe the differences between the three major physical connection mediums: twisted-pair cable, coaxial cable, and fiber-optic cable.

Which among the following is considered a line-of-sight communication medium?

This type of network topology does not use a specific physical layout.