Communications Flashcards
What does LAN stand for?
Local area network
What does WAN stand for?
Wide area network.
Name the network topologies
Bus, ring, star, mesh, partial mesh.
What does DHCP stand for?
Dynamic host configuration protocol
What does DNS stand for?
Domain name system
HTTP
Hypertext transfer protocol
What does HTTPS stand for?
Hypertext transfer protocol secure.
What are the pros and cons of circuit switching?
Pros: More reliable - dedicated connection, Less chance of congestion.
Cons: Possible wasted bandwidth, Expensive - more connections needed.
What are the pros and cons of packet switching?
Pros: Bandwidth used efficiently, Packets can be redelivered, Packets can take different routes around congestion.
Cons: Data can take longer to be received, Packets can be lost, Less secure - packets must contain source and destination addresses
What is in the link layer?
Electrical signalling, flow control, error detection, Network addressing - MAC addresses, Transmitting datagrams between internet layers.
What is in the internet layer?
IP header, IP data, sending and receiving IP addresses, host-host routing and address.
What is in the transfer layer?
Protocol header and data, host-host communication, UDP - connectionless, TCP - connection-orientated.
What is in the application layer?
Data we want to transmit, Application protocol - DNS, HTTPS, etc, Prepares application protocols to move to transport layer.
