Computer Internet Questions and Answers

Answer: C

Correct answer: radio-waves

Wi-Fi is radio: it transmits in the unlicensed 2.4 GHz and 5 GHz bands. Optical fibre and phone lines are wired media, and sound waves are not used for data networking.

Answer: D

Correct answer: none of the mentioned

Ethernet, DSL and FDDI all define how stations share the medium, so each includes a media access control method. None of them is the exception.

Answer: A

Correct answer: network

Two or more computers connected so as to share information form a network. A server is a role a machine may play on one, and a router is a device that joins networks together.

Answer: B

Correct answer: File transfer protocol

FTP is the File Transfer Protocol, used to move files between hosts and to log in to a file server.

Answer: B

Correct answer: Mozilla

Websites are reached and displayed by a browser, and Mozilla is one. FoxPro is a database, Word a word processor and Unix an operating system.

Answer: D

Correct answer: Uniform resource locator

URL stands for Uniform Resource Locator - the address that says which protocol to use, which host to ask and which resource to request.

Answer: D

Correct answer: To coordinate domain names and IP address allocation globally

The Internet Corporation for Assigned Names and Numbers oversees the domain name system and the distribution of IP address blocks to regional registries. Web standards are the separate business of the W3C and the IETF.

Answer: A

Correct answer: A system that filters network traffic according to security rules

A firewall inspects traffic crossing a network boundary and permits or blocks it according to a configured policy. It may be hardware or software, and it controls access rather than detecting malicious content, which is the separate job of antivirus and intrusion detection.

Answer: A

Correct answer: An attempt to obtain sensitive information by impersonating a trusted party

Phishing is a fraud in which the attacker impersonates a bank, employer or service to induce the victim to reveal passwords, card numbers or other sensitive information - usually through an email or message linking to a convincing fake site. It is an attack on the person rather than on the system, which is why technical defences alone are insufficient and why it remains the commonest route into an organisation. The variants are worth naming. Spear phishing is targeted at a specific individual using details gathered about them. Whaling targets senior executives. Vishing uses voice calls and smishing uses text messages. The practical defences are checking the sender’s actual address rather than the display name, hovering over a link to read its real destination, never following a link to log in, and above all enabling two-factor authentication, which makes a stolen password insufficient on its own.

Answer: A

Correct answer: E-business

E-business is the broadest of the four: it covers every use of electronic platforms in running a business, internal as well as external. E-commerce is the narrower activity of buying and selling, and e-marketing and e-procurement are narrower still.