OA Exams

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  • November 24, 2024

Question 41

What is the purpose of the ARP (Address Resolution Protocol)?

a) To resolve IP addresses to MAC addresses
b) To encrypt network traffic
c) To assign IP addresses dynamically
d) To resolve domain names

Correct Answer: a) To resolve IP addresses to MAC addresses

Explanation: ARP maps IP addresses to MAC addresses, allowing devices on a local network to communicate with each other.

Question 42

What type of attack involves an attacker intercepting communication between two parties without their knowledge?

a) DoS
b) Man-in-the-middle
c) Phishing
d) Spoofing

Correct Answer: b) Man-in-the-middle

Explanation: In a man-in-the-middle attack, the attacker intercepts communication between two parties, potentially altering or stealing sensitive information.

Question 43

Which type of network topology offers the highest redundancy and fault tolerance?

a) Star
b) Ring
c) Bus
d) Mesh

Correct Answer: d) Mesh

Explanation: A mesh topology offers the highest redundancy and fault tolerance since every device is connected to every other device, ensuring multiple paths for data transmission.

Question 44

What does SSL (Secure Sockets Layer) provide for network communication?

a) Encryption
b) Routing
c) Dynamic IP address allocation
d) Data compression

Correct Answer: a) Encryption

Explanation: SSL (Secure Sockets Layer) provides encryption for network communication, ensuring that data is securely transmitted between the client and server.

Question 45

Which OSI layer manages session establishment, maintenance, and termination?

a) Presentation
b) Session
c) Application
d) Transpor

Correct Answer: b) Session

Explanation: The Session layer (Layer 5) is responsible for establishing, maintaining, and terminating communication sessions between devices.

Question 46

What is the purpose of the ICMP (Internet Control Message Protocol)?

a) To assign IP addresses
b) To send error messages and operational information
c) To encrypt network traffic
d) To forward data between networks

Correct Answer: b) To send error messages and operational information

Explanation: ICMP is used to send error messages, such as when a requested service is unavailable or when data cannot reach its destination.

Question 47

What is the primary difference between TCP and UDP?

a) TCP is connectionless, and UDP is connection-oriented
b) TCP ensures reliable data delivery, while UDP does not
c) UDP is used for file transfer, and TCP is used for streaming
d) TCP operates at the Data Link layer, and UDP operates at the Physical layer

Correct Answer: b) TCP ensures reliable data delivery, while UDP does not

Explanation: TCP (Transmission Control Protocol) is connection-oriented and ensures reliable data delivery, while UDP (User Datagram Protocol) is connectionless and does not guarantee delivery.

Question 48

Which protocol uses port 80 for communication?

a) FTP
b) SSH
c) HTTP
d) DNS

Correct Answer: c) HTTP

Explanation: HTTP (Hypertext Transfer Protocol) uses port 80 for communication between web browsers and web servers.

Question 49

What is the function of NAT (Network Address Translation)?

a) To resolve domain names
b) To allow multiple devices to share a single public IP address
c) To forward data between networks
d) To encrypt data transmissions

Correct Answer: b) To allow multiple devices to share a single public IP address

Explanation: NAT enables multiple devices on a private network to access the internet using a single public IP address, translating between private and public addresses.

Question 50

What is the purpose of a honeypot in network security?

a) To block unauthorized access
b) To detect and trap malicious activity
c) To encrypt network traffic
d) To assign IP addresses

Correct Answer: b) To detect and trap malicious activity

Explanation: A honeypot is a decoy system designed to detect and trap attackers, allowing security teams to monitor and analyze malicious activity.

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