A. Half-duplex
B. Full-duplex
C. Simplex
D. Automatic
Explanation: In simplex transmission, data flows in single direction which in this case refers to the data flowing from the keyboard to the computer. Another example would be of the mouse where the data flows from the mouse to the computer only.
A. Physical layer
B. Presentation layer
C. Session layer
D. Application layer
Explanation: In networking, a user mainly interacts with application layer to create and send information to other computer or network. Application layer provides the interface between applications and the network. It is the top-most layer in both the TCP/IP and the OSI model.
A. Internet society
B. Internet service provider
C. Different computer
D. Internet architecture board
Explanation: The ISPs (Internet Service Providers) are the main agents through which every computer is connected to the internet. They are licensed to allot public IP addresses to its customers in order to connect them to the internet.
A. SMTP
B. HTTP
C. FTP
D. Telnet
Explanation: Telnet provides access to the command-line interface on a remote computer. One can login to the computer from the command-line interface.
A. Botnet process
B. Worms attack
C. Virus attack
D. Denial-of-service attack
Explanation: In a Denial of Service attack, the attacker won’t let the victims access the network by using a certain method that ensures that an essential network resource is unavailable to the victim. The methods that the attacker can use are vulnerability attack, bandwidth flooding and connection flooding.