Network Resources Flashcards
What does a network consist of?
Computers linked together by a cable or by a wireless techngoies
What is a server?
A computer on a network responsible for managing and sharing resources.
What is a network card?
An electronic device which enables a computer to connect with the file server and share data with other computers.
What is a repeater?
Regenerates signals which may be weakened when transmitted over long distances.
What is a wireless access point?
A hardware device that allows 2 wireless capable devices to connect to a network
What is a media converter?
A device that allows 2 dissimilar media types to connect by changing the physical signals from one media type to another
What is a MAC address?
Used to identify a physical network adapter. It routes data packets on a local network. Is coded onto a network interface card. It identifies nic uniquely on a local area network. Consists of 6 2 digits hexadecimal numbers separated by a colon.
What is an ip address?
When each device on the internet is given a unique ip address to distinguish it from other devices. It enables the devices to identify itself. Consists of 32 bits formatted as 4 omelettes of numbers.
What are the features of a client server network?
-has a central controlling server that waits for requests and authenticates them.
-the server controls security.
-multiple clients request resources
What are the benefits of a client server network?
-security is carried out by the server
What are the drawbacks of client server network?
-high installation costs as there is a higher spec.
What are the features of a peer to peer network?
-no controlling computer
-each computer is of equal status
-nodes request data from other nodes
-computers are suppliers and consumers
What are the benefits of a peer to peer network?
-low installation costs as there is no need to resource a dedicated server
What are the drawbacks of a peer to peer network?
-low level of security as security cannot be controlled centrally
What is carrier sense multiple access with collision detection?
A set of rules determining how network devices respond to a collision which occurs when two devices attempt to use a data channel simultaneously. They physically monitor the traffic. If two computers attempt to transmit at the same time, they wait a random time interval before those that collided attempt to transmit again.
What is a communication protocol?
A standard set of rules used to ensure that different network devices can send and receive data properly.
