COMPUTER AND TECHNOLOGY FINAL
EXAM QUESTIONS AND ANSWERS
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.
Client/ server network - Answer--Also called server based network.
, -A type of network that uses servers to deliver services to computers that are requesting
them (clients).
-Makes data flow more efficiently than P2P networks.
-Servers can respond to requests from a large # of clients at the same time for
businesses.
-Servers can perform specific tasks, such as handling email or database requests
efficiently.
Packet - Answer--Also called data packet.
-A small segment of data that's bundled for sending over transmission media. Each
packet contains the address of the computer or peripheral device to which its being
sent.
- Data is broken into smaller chunks.
-They are sent over various routes at the same time.
-When they reach their destination, they reassemble by the receiving computer.
-Packet contents vary, depending on the protocol being followed.
-All packets must contain:
1. An address to which the packet is being sent.
2. The address from where the packet originates.
3.Reassembly instructions, if the original data is split between packets.
4. The data that's being transmitted.
SSID - Answer--Also called service set identifier.
-A network name that wireless routers use to identify themselves.
-Each wireless network has its own name to identify it.
-The router uses a default network name that all routers from that manufacturer use
( "wireless" or "Netgear").
-Hackers know the default names and access codes for routers.
-Most routers are set up to broadcast their SSIDs so that other wireless devices can find
them.
Network Adapter - Answer--A device that enables the computer (or peripheral) to
communicate with the network using a common data communication language, or
protocol.
- For the different nodes on a network to communicate with each other and access the
network each node needs this.
Routers - Answer--A device that routes packets of data between two or more networks.
-Transfers packets of data between two or more networks.
-Home network- need a router to transfer data between home network and the Internet.
- To add WiFi- You need a router that features wireless capabilities.
Switches - Answer--A device for transmitting data on a network.
-A switch makes decisions, based on the media access control address of the data, as
to where the data is to be sent.
-Acts as a traffic signal on a network.
EXAM QUESTIONS AND ANSWERS
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.
Client/ server network - Answer--Also called server based network.
, -A type of network that uses servers to deliver services to computers that are requesting
them (clients).
-Makes data flow more efficiently than P2P networks.
-Servers can respond to requests from a large # of clients at the same time for
businesses.
-Servers can perform specific tasks, such as handling email or database requests
efficiently.
Packet - Answer--Also called data packet.
-A small segment of data that's bundled for sending over transmission media. Each
packet contains the address of the computer or peripheral device to which its being
sent.
- Data is broken into smaller chunks.
-They are sent over various routes at the same time.
-When they reach their destination, they reassemble by the receiving computer.
-Packet contents vary, depending on the protocol being followed.
-All packets must contain:
1. An address to which the packet is being sent.
2. The address from where the packet originates.
3.Reassembly instructions, if the original data is split between packets.
4. The data that's being transmitted.
SSID - Answer--Also called service set identifier.
-A network name that wireless routers use to identify themselves.
-Each wireless network has its own name to identify it.
-The router uses a default network name that all routers from that manufacturer use
( "wireless" or "Netgear").
-Hackers know the default names and access codes for routers.
-Most routers are set up to broadcast their SSIDs so that other wireless devices can find
them.
Network Adapter - Answer--A device that enables the computer (or peripheral) to
communicate with the network using a common data communication language, or
protocol.
- For the different nodes on a network to communicate with each other and access the
network each node needs this.
Routers - Answer--A device that routes packets of data between two or more networks.
-Transfers packets of data between two or more networks.
-Home network- need a router to transfer data between home network and the Internet.
- To add WiFi- You need a router that features wireless capabilities.
Switches - Answer--A device for transmitting data on a network.
-A switch makes decisions, based on the media access control address of the data, as
to where the data is to be sent.
-Acts as a traffic signal on a network.
