BTM 200- UNIT 5- COMMUNICATION
AND NETWORKS. Exam Questions With
Verified And Updated Answers
Digital Convergence - answer✔is the gradual merger of computing and communications into a
new information environment, in which the same information is exchanged among many kinds
of equipment, using the language of computers.
Digital - answer✔Signals that computer uses to process a series of datas 0s and 1s, off and on.
Analog - answer✔signals that use wave variations, continuously changing.
Can an analog data be converted to digital data? - answer✔yes, by using modems
Modem - answer✔short for modulate/ demodulate. Communications hardware device that
facilitates the transmission of data.
What does WAN stand for? - answer✔Wide Area Network. It allows communication around the
whole world. It is meant to help others share resources. Example: The Internet
What does MAN stand for? - answer✔Metropolitan Area Network. Communications network
covering a
city or a suburb. Many cellphone systems are MANs.
What does LAN stand for and what is it? - answer✔Local Are Network. Connects computers and
devices in a limited
geographic area, such as one office, one building, or a group of buildings close together. (A
home area network is a LAN.)
What does P2P stand for? - answer✔peer-to-peer. All computers on the network are "equal"
and communicate directly with one another, without relying on servers.
ALL RIGHTS RESERVED.
client/server network - answer✔A network that uses centrally administered computers, known
as "servers", to enable resource sharing for and to facilitate communication between the other
computers on the network.
Intranets - answer✔use infrastructure and standards of the Internet and the web, but for an
organization's internal use only.
Extranet - answer✔Similar to an intranet, but allows specific users outside of the organization
to access internal information systems.
VPNs - answer✔(virtual private networks): use a public network (usually the Internet) plus
intranets and extranets to connect an organization's various sites) but on a private basis, via
encryption and authentication; regular Internet users do not have access to the VPN's data and
information.
Firewall - answer✔a system of hardware and/or software that protects the system from
intruders. (security software for the intranets, extranets and VPNs).
Hosts - answer✔Client/server network has a host computer, which controls the network.
Nodes - answer✔any device attached to the network
Packets - answer✔fixed-length blocks of data for transmission, reassembled after transmission
Protocols - answer✔A set of rules governing the exchange or transmission of data between
devices.
Handshaking protocol - answer✔The sending and receiving devices exchange signals to
establish that they are each ready to initiate data transfer.
what are the four types of information that help Packet, or electronic message reach its
destination? - answer✔1. the sender's address (IP)
2. the intended receiver's address
3. how many packets the complete message has been broken into
4. the number of this particular packet. The packets carry the data in the protocols that the
Internet uses—that is, TCP/IP
switch - answer✔Device that connects computers to a network; sends only to
intended recipients; operates back and forth at the same time.
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