IGCSE COMPUTER SCIENCE -
COMMUNICATION AND INTERNET
TECHNOLOGIES EXAM QUESTIONS
AND ANSWERS
Data Transmission - Answer-The transfer of data between computers or other electronic
devices through a network.
Half Duplex - Answer-A type of transmission in which signals may travel in both
directions over a medium, but in only one direction at a time.
Full Duplex - Answer-A type of transmission in which signals may travel in both
directions over a medium at the same time.
Serial Data Transmission - Answer-Single bits are sent one after another along a single
wire.
Parallel Data Transmission - Answer-Multiple bits are sent at once down multiple wires.
Asynchronous Data Transmission - Answer-The data is transmitted in an agreed bit
pattern.
Synchronous Data Transmission - Answer-A continuous stream of data which is
accompanied by timing signals generated by an internal clock
USB - Answer-Universal Serial Bus
IC - Answer-Integrated Circuit
Web Browser - Answer-A program used to view Web pages. They request the webpage
from a server before rendering the page to the user.
ISP - Answer-Internet Service Provider
IP address - Answer-A number that uniquely identifies each computer or device
connected to a network.
MAC address - Answer-A Media Access Control address is a hardware address that
uniquely identifies each node on a network.
HTML - Answer-Hypertext Markup Language
COMMUNICATION AND INTERNET
TECHNOLOGIES EXAM QUESTIONS
AND ANSWERS
Data Transmission - Answer-The transfer of data between computers or other electronic
devices through a network.
Half Duplex - Answer-A type of transmission in which signals may travel in both
directions over a medium, but in only one direction at a time.
Full Duplex - Answer-A type of transmission in which signals may travel in both
directions over a medium at the same time.
Serial Data Transmission - Answer-Single bits are sent one after another along a single
wire.
Parallel Data Transmission - Answer-Multiple bits are sent at once down multiple wires.
Asynchronous Data Transmission - Answer-The data is transmitted in an agreed bit
pattern.
Synchronous Data Transmission - Answer-A continuous stream of data which is
accompanied by timing signals generated by an internal clock
USB - Answer-Universal Serial Bus
IC - Answer-Integrated Circuit
Web Browser - Answer-A program used to view Web pages. They request the webpage
from a server before rendering the page to the user.
ISP - Answer-Internet Service Provider
IP address - Answer-A number that uniquely identifies each computer or device
connected to a network.
MAC address - Answer-A Media Access Control address is a hardware address that
uniquely identifies each node on a network.
HTML - Answer-Hypertext Markup Language
