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A computer ______ is a collection of computers that communicate with one another over transmission lines.
To provide seamless flow to networks that comprise an Internet and elaborate scheme called a(n) _____ is used.
Computer and printers on a LAN are connected to a _____ to communicate & transmit messages on the LAN.
The hardware component that connects a printer's circuitry to the networks is called a(n) ______.
Reducing the cross-wire signal interference that occurs when wires run parallel for long distances is made possible by _____.
twisting the wires in a UTP
The connections between switches can use UTP cable, but if they carry a lo of traffic or are far apart, _____.
the UTP cable may be replaced by optical fiber cables
The access point sends and receives wireless traffic using the _____ protocol and then communications with the switch using the _____ protocol.
A ______ must be used to convert an analog signal to a digital one, when trying to transmit data over a typical phone line.
Which of the following is true of DSL modems?
their signals do not interfere with voice telephone lines
_____ is good for homes and small businesses because they receive more data than they transmit.
What is the performance guarantee offered by SDSL connections?
they offer the same fast speed in both directions
_____ modems modulate in such a way that they do not interfere with TV signals, even though they use the same lines.
Which of the following is an access device that connects each site to the transmission lines?
A large company with production facilities in Houston, Atlanta, and Philadelphia would probably use _____ lines to transmit large amounts of data between the sites.
Which of the following is true of leased line networks?
network traffic is moved through a special-purpose computer called a modem
Which of the following transmission lines offers data transmission speeds of up to 40 Cbps?
optical fiber cables
All of the following are advantages of using PSDN except _______.
in a PSDN, separate lines connect new site to all other sites
Which of the following is true of the protocols used by PSDN?
ATM supports both voice and data communications
A(n) ____ uses the Internet or other Internet to create the appearance of private, point-to-point connections.
Which of the following applies to asymmetric encryption?
one key encodes the messages, one key decodes the message
Which is a special version of asymmetric encryption that is popular on the Internet?
public key/private key
HTTPS and SSL/TLS utilize which of the following?
a communication of public key/private key and symmetric encryption
A(n) _____ firewall examines each part of the message and decides whether it will let that part pass through to the network.
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