Computer Internet Questions and Answers

Answer: B

Correct answer: ATM

ATM - Asynchronous Transfer Mode - carries all traffic in fixed 53-byte cells and multiplexes them asynchronously, which is what allows voice and data to share one link with predictable delay. SONET is the transmission system such cells may travel over.

Answer: C

Correct answer: To begin a paragraph with a large dropped initial capital letter

A drop cap is an oversized first letter set into the first few lines of a paragraph, a device inherited from printing. It applies to one letter of one paragraph, not to every capital in the document.

Answer: D

Correct answer: Modem

A modem converts the computer's digital signal into a form a telephone line can carry, and converts it back at the far end - which is what the name, modulator-demodulator, records.

Answer: D

Correct answer: It requires a second, independent proof of identity besides the password

Two-factor authentication requires a second proof of identity in addition to the password, so that a stolen password alone is not enough to gain access. The factors are conventionally grouped as something you know - a password or PIN; something you have - a phone, a hardware key, a one-time code; and something you are - a fingerprint, a face. Genuine two-factor authentication uses two different groups; two passwords are not two factors. It is the single most effective defence against phishing and credential theft, because an attacker who obtains a password by any means still cannot log in. The methods differ in strength. SMS codes are the weakest, being vulnerable to SIM-swapping; an authenticator application generating time-based codes is better; and a hardware security key is the strongest, since it verifies the site’s identity too and so cannot be phished at all.

Answer: B

Correct answer: Synonyms and Antonyms words

The thesaurus offers alternative words of similar or opposite meaning. Spelling suggestions come from the spelling checker, which is a separate tool.

Answer: A

Correct answer: WAN

Telephone lines belong to the public network, so they are used to reach across cities and countries - that is, for a wide area network. A LAN uses its own cabling within one site.

Answer: D

Correct answer: HyperText Transfer Protocol

HTTP is the HyperText Transfer Protocol, the rules by which a web browser requests a page and a server returns it. It was devised by Tim Berners-Lee at CERN around 1989 along with HTML and URLs, the three components of the Web. It is stateless: each request is independent, and the server retains nothing between them. Sessions and logins are therefore built on top of it using cookies or tokens. Requests use methods, of which GET retrieves a resource and POST submits data, and responses carry a status code - 200 for success, 301 for a permanent redirect, 404 for not found, 500 for a server error. HTTPS is the same protocol carried inside a TLS-encrypted connection, so that the content cannot be read or altered in transit. It is now the default, and browsers mark plain HTTP as insecure.

Answer: C

Correct answer: Chatting

Chatting is real-time conversation by typed text. E-mail is not real-time, and a newsgroup is a posted discussion rather than a live exchange.

Answer: C

Correct answer: A multi-homed firewall

A multi-homed firewall has an interface on each network it joins, so it both separates the subnets and applies rules to everything passing between them and the outside. A router or VLAN separates without filtering, and a modem does neither.

Answer: B

Correct answer: Designing

E-mail, newsgroups and chat are all services carried over the internet. Designing is something done with software on a machine, whether or not it is connected.