Computer & IT

note!Answer: B) Bus
In a bus topology all stations share a single channel (the backbone cable) for sending and receiving data.

note!Answer: B) 41H
'A' is decimal 65, which equals 41 in hexadecimal and 01000001 in binary.

note!Answer: C) Denial of service attack
A denial of service (DoS) attack overwhelms a system with traffic so it cannot serve legitimate users.

note!Answer: A) SMTP
SMTP (Simple Mail Transfer Protocol) is used to send email from a client to a mail server.

note!Answer: D) <HTML>
HTML tags are written inside angle brackets, such as <HTML>.

note!Answer: C) Protocol
The scheme part of a URL (http) identifies the protocol used.

note!Answer: C) 4 pair
A standard UTP cable with RJ-45 connectors contains 4 twisted pairs (8 wires).

note!Answer: B) Local Area Network
LAN stands for Local Area Network.

note!Answer: D) Dr
Tr, Br and Hr are valid HTML tags (table row, line break, horizontal rule), but Dr is not.

note!Answer: A) LAN
A Local Area Network (LAN) connects computers within a single building or small area.

note!Answer: D) Modem
A modem both sends and receives data over communication lines (modulates and demodulates signals).

note!Answer: A) Graphics interchange format
GIF stands for Graphics Interchange Format, an image file format.

note!Answer: C) 192.168.1.100
192.168.x.x is in the private IP range reserved for local networks.

note!Answer: B) Email address
An email address (like user@domain) is used to send and receive email.

note!Answer: D) Extensible markup language
XML stands for Extensible Markup Language.

note!Answer: B) Server
Shared information in a network is kept on a central server that clients access.

note!Answer: D) Telephone
A LAN needs cables with RJ-45 connectors, computers and hubs/switches, but not a telephone.

note!Answer: D) A communication device
A modem is a communication device that modulates and demodulates signals for data transmission.

note!Answer: D) No one of the above
BCC stands for Blind Carbon Copy, which is none of the listed options.

note!Answer: C) Both a and b
A LAN card (NIC) both sends and receives data signals on the network.