1a) An email address is a unique identifier for an email account. It is used to both send and receive email messages over the Internet. example: firstname.lastname@example.org
while web address, also known as a URL (uniform resource locator), is an Internet or intranet name that points to to a location where a file, directory or website page is hosted. Example; www.tommy.com
a) POP – Post Office Protocol
b) SMTP – Simple Mail Transfer Protocol
i) POP – Post Office Protocol
ii) SMTP – Simple Mail Transfer Protocol
master file: Master file is a computer file that is used in collection of records pertaining to one of the main subjects of an information system, such as customers, employees, products and vendors. Master files contain descriptive data, such as name and address, as well as summary information, such as amount due and year-to-date sales.
Transaction file : transaction file is a computer file used to hold data during transaction processing. The file is later used to update the master file and audit daily, weekly or monthly transactions. For example in a busy supermarket, daily sales are recorded on a transaction file and later used to update the stock file. The file is also used by the management to check on the daily or periodic transactions.
(i)STP (Shielded twisted pair) is a twisted pair cable enclosed in foil or mesh shield.
UTP (Unshielded twisted pair) is a cable with wires that are twisted together.
(ii)In Shielded twisted pair Installation of cables is difficult comparatively.
In Unshielded twisted pair, Easily installed as cables are smaller, lighter, and flexible.
Octal is (arithmetic/computing/uncountable) the number system that uses the eight digits 0, 1, 2, 3, 4, 5, 6, 7
Binary is (mathematics/computing/uncountable) the bijective base-2 numeral system, which uses only the digits. example 110100
Computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic
(i) Function Keys
Example; F1 is used in many Windows programs to open the “help” menu
(ii) Alphanumeric Keys
Example; number sign.”
(iii) Punctuation Keys
Example; “comma key,”
(iv) Navigation Keys
Example; one pointing up, one pointing down, one pointing right and one pointing left.
Broadcast in communication system is a track within mass communication that pertains to video and audio content for use on a variety of platforms.
(i) Internet broadcasting ; this is a means of advertising on the internet has become increasingly popular as you can advertise to your target audience. Space can be bought on websites that the target customers would use and data can be collected about how many people clicked on the ad.
(ii) TV broadcasting; this means of broadcast on television provides us with the highest volume of electronic media advertising. There are hundreds of advertisements shown on each channel per day and some slots are sold for millions to the advertisers as they will have such a high audience to watch their ad.
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