Computer Internet Questions and Answers

Answer: B

Correct answer: Server

A machine that makes its resources available to others is acting as a server; the machines using them are clients. In a peer-to-peer network every machine does both at once.

Answer: D

Correct answer: is a grid organized in columns and rows

A table is by definition a grid of rows and columns. The other three statements are true of tables but describe what can be done with one rather than what it is.

Answer: A

Correct answer: ASCII

ASCII assigns a number to each character, and because almost every system uses it, plain ASCII text is the lowest common denominator for exchanging data. HTML and XML are markup languages built on top of a character encoding rather than encodings themselves.

Answer: B

Correct answer: It is usually the address of the router acting as the gateway

On a home network the address ending .1 is conventionally assigned to the router, which acts as the default gateway - the device that traffic destined for anywhere outside the local network is sent to. It is also the address typed into a browser to reach the router’s configuration page. The convention is not a rule; nothing forbids the router taking a different address, and some manufacturers use 192.168.1.254. The 192.168 range is one of the private address blocks reserved for local networks, along with 10.x.x.x and 172.16 to 172.31. These addresses are not routable on the public internet and are reused in millions of homes, which works because the router performs NAT, translating them to its single public address on the way out. The broadcast address is the last in a subnet, not the first, and the network address itself ends in .0.

Answer: C

Correct answer: It should be deleted without opening it

An unexpected message from an unknown sender may carry malware in its attachment or a link to a fraudulent site, and replying at all confirms that the address is live. Deleting it unopened is the only response that gives the sender nothing.

Answer: D

Correct answer: Internet protocol

IP stands for Internet Protocol, and an IP address is the number that identifies a host within it.

Answer: B

Correct answer: network

A network is the combination of hardware - cables, adapters, switches - and software - protocols and drivers - that allows computers to exchange information. A server is one machine on it.

Answer: C

Correct answer: Converts analog signals to digitals and vice-versa

A modem modulates the computer's digital data onto an analogue carrier for transmission and demodulates it back at the other end, which is where its name comes from.

Answer: A

Correct answer: It encrypts traffic and hides the user’s IP address from the sites visited

A VPN, or Virtual Private Network, creates an encrypted tunnel between the user’s device and a server operated by the VPN provider. Traffic emerges from that server, so sites see the server’s IP address rather than the user’s, and anyone observing the local network sees only encrypted traffic to a single destination. Its two established uses are remote access - letting an employee reach an office network as though present - and protecting traffic on untrusted networks such as public Wi-Fi. It generally makes a connection slower rather than faster, since traffic travels further and must be encrypted and decrypted; the second option inverts this. Its privacy protection is also limited and worth stating plainly: it moves trust from the internet provider to the VPN provider, who can see the same traffic. It does not make a user anonymous, since cookies and logins identify them regardless of address.

Answer: C

Correct answer: It is the address of page on World Wide Web

A URL - Uniform Resource Locator - identifies where a resource is and how to fetch it: the scheme, the host and the path.