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Computer and Technology Final Exam Questions and Answers
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Computer and Technology Final Exam Questions and Answers
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Computer and Technology Final ExamQuestions and Answers
Node - Answer--A device connected to a network such as a computer. a peripheral
(such as a printer), or a communications device (such as a modem).
-Each device connected to a network is a node.
-A node can be a computer, a peripheral such as a printer or a game console or a
network device such as a router.
Network Architecture - Answer--The design of a computer network; includes both
physical and logical design.
-The network you have at home differs in terms of its size, structure, and cost from the
one at college.
-Difference is based on network architecture.
-Classified according to:
1. The distance between their nodes.
2. The way in which they are managed ( or administered).
3. The set of rules ( or protocol) used to exchange data between network nodes.
4. The communications medium used to transport the data.
Network Administration - Answer--Disadvantages for setting up networks.
-It is time consuming and very costly.
-Involves tasks such as:
(1) installing new computers and devices,
(2) monitoring the network to ensure its performing efficiently,
(3) updating and installing new software on the network, and
(4) configuring, or setting up, proper security for a network.
Bandwidth - Answer--The maximum speed at which data can be transmitted between
two nodes on a network; usually measured in megabits per second (Mbps).
-Also called Data transfer rate
LAN - Answer--Local area network
-A network in which the nodes are located within a small geographic area.
-Examples: A network in a computer lab at school or at a fast food restaurant.
HAN - Answer--Home area network.
-A specific type of LAN located in a home.
-Used to connect all of a home's digital devices such as computers, peripherals,
phones, gaming devices, digital video recorders (DVRs), and televisions.
MAN - Answer--Metropolitan area network.
, -A large network designed to provide access to a specific geographic area, such as an
entire city.
-Many U.S. cities are now deploying MANs to provide Internet access to tourists and
residents.
-MANs employ WiMAX wireless technology that extends local WiFi networks across
greater distances.
WAN - Answer--Wide area network.
-Spans a large physical distance.
-The internet is the largest WAN, covering the globe.
-A networked collection of LANs.
-All the connected LANs on the multiple campuses would be described as a single
WAN.
PAN - Answer--Personal area network.
-A network used for communication among devices close to one person, such as
smartphones, notebooks, and tablets using wireless technologies such as Bluetooth
and Wifi.
Coaxial cable - Answer--A single copper wire surrounded by layers of plastic insulation,
metal sheathing, and a plastic jacket.
-Used mainly in cable television and cable Internet service.
Fiber Optic cable - Answer--A cable that transmits data at close to the speed of light
along glass or plastic fibers.
-Made up of plastic or glass fibers that transmit data at extremely fast speeds.
Twisted pair cable - Answer--Cables made of copper wires that are twisted around each
other and are surrounded by a plastic jacket.
-Such as traditional home phone wires.
-Phone cable wont work for connecting a LAN or HAN.
UTP Cable - Answer--Also called unshielded twisted pair cable.
-The most popular transmission media option for Ethernet networks.
-UTP cable is composed of four pairs of wires that are twisted around each other to
reduce electrical interference.
-Type of twisted pair cable.
-Used for networks.
Peer-to-peer network - Answer-- Also called P2P.
-A network in which each node connected to the network can communicate directly with
every other node on the network.
-Process of users transferring files between computers.
-Napster.- selling music sharing sites.
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