What do you mean by chat?
Answer: C
Correct answer: It is a type of conversation that takes place on a computer network in real time
Chat is live typed conversation: what one person types appears on the other's screen at once. A discussion area where messages are posted and read later is a forum, and uploading files is FTP.
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A protocol is a set of rules governing a time sequence of events that must take place
Answer: D
Correct answer: across an interface
A protocol governs the exchange at the boundary between two entities, so the sequence of events it specifies takes place across an interface. The phrasing matters: peers communicate through an interface, and the rules apply at it.
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Hub is associated with .......... network.
Answer: C
Correct answer: star
A hub sits at the centre with a separate cable to each node, which is exactly the star arrangement. Logically it still behaves as a shared bus, since it repeats every signal to every port.
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What type of RJ45 UTP cable is used between switches?
Answer: A
Correct answer: Crossover cable
Two devices of the same kind - switch to switch, PC to PC - need a crossover cable, which swaps the transmit and receive pairs so that each device's transmitter meets the other's receiver. A straight-through cable is for connecting unlike devices, such as PC to switch.
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________ uses asynchronous time –division multiplexing and encodes data into small, Fixed-size cells
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.
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Why Drop Caps are used in document?
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.
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________ allow you to communicate with other computers using a phone line
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.
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What is the purpose of two-factor authentication?
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.
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Thesaurus tool in MS Word is used for...
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.
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Which type of network would use phone lines?
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.
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