data communication Flashcards
(26 cards)
What is data communication?
The exchange of data between devices using a transmission medium.
True or False: Data communication can occur without a transmission medium.
False
What are the two main types of data communication?
Analog and digital communication.
Fill in the blank: The process of converting data into a form suitable for transmission is called _____ .
encoding
What is a network?
A collection of computers and devices connected to share resources and communicate.
What does LAN stand for?
Local Area Network
What is the purpose of a router?
To direct data packets between different networks.
True or False: A modem converts digital signals to analog signals and vice versa.
True
What is the function of a switch in a network?
To connect devices within a LAN and manage data traffic.
What is bandwidth?
The maximum rate of data transfer across a network.
What does IP stand for?
Internet Protocol
Fill in the blank: A _____ address uniquely identifies a device on a network.
IP
What is the difference between TCP and UDP?
TCP is connection-oriented and reliable, while UDP is connectionless and faster.
What is a firewall?
A security device that monitors and controls incoming and outgoing network traffic.
True or False: A VPN provides a secure connection over a public network.
True
What is a protocol in networking?
A set of rules that govern data communication between devices.
What does HTTP stand for?
Hypertext Transfer Protocol
What is the primary purpose of DNS?
To translate domain names into IP addresses.
Fill in the blank: _____ is the process of dividing data into packets for transmission.
Packet switching
What is the role of DHCP in a network?
To dynamically assign IP addresses to devices on a network.
What is a network topology?
The arrangement of different elements (links, nodes) in a computer network.
What are the three basic types of network topologies?
Star, bus, and ring.
True or False: In a star topology, all nodes are connected to a single central hub.
True
What is latency in data communication?
The time it takes for data to travel from the source to the destination.
