Types of Servers and Their Features

Which type of malware is designed to replicate itself and spread to other computers?

• Virus

• Worm

• Trojan

• Spyware

Answer explanation

A worm is a type of malware that can replicate itself and spread to other computers without user intervention, unlike a virus which requires a host file. Trojans and spyware do not have self-replicating capabilities.

What does the principle of 'least privilege' entail in network security?

• Granting users minimal access rights necessary to perform their tasks

• Allowing all users administrative access

• Providing users with access to all network resources

• Restricting access to external websites

Answer explanation

The principle of 'least privilege' means granting users only the minimal access rights necessary to perform their tasks, enhancing security by limiting potential damage from misuse or attacks.

Which encryption method uses two keys—a public key and a private key—for secure communication?

• Symmetric encryption

• Asymmetric encryption

• Hashing

• Steganography

Answer explanation

Asymmetric encryption uses two keys: a public key for encryption and a private key for decryption, ensuring secure communication. In contrast, symmetric encryption uses a single key, while hashing and steganography serve different purposes.

What is a 'zero-day' vulnerability?

• a) A vulnerability that has been patched

• b) A vulnerability that is publicly known

• c) A vulnerability that is unknown to the software vendor

• d) A vulnerability that affects zero systems

Answer explanation

A 'zero-day' vulnerability is one that is unknown to the software vendor, meaning they have had zero days to address it. This makes option c) the correct choice, as it highlights the critical nature of such vulnerabilities.

What are the benefits of a Mail Server?

• Enables internal and external communication

• Centralized email management

• Both A and B

• None of the above

Answer explanation

A Mail Server facilitates both internal and external communication, allowing users to send and receive emails. It also provides centralized email management, making it easier to organize and control email accounts. Thus, the correct answer is both A and B.

What is a drawback of a Mail Server?

• Requires spam and security filters

• Storage needs can grow rapidly

• Both A and B

• None of the above

Answer explanation

A Mail Server has drawbacks such as requiring spam and security filters to protect against threats, and its storage needs can grow rapidly as more emails are stored. Therefore, the correct answer is both A and B.

What is a benefit of an Application Server?

• Centralizes application management

• Reduces client-side requirements

• Both A and B

• None of the above

Answer explanation

An Application Server centralizes application management, making it easier to maintain and deploy applications. It also reduces client-side requirements by handling processing on the server, allowing clients to be lighter and more efficient.

What is a drawback of an Application Server?

• Can be complex to configure

• May require significant resources

• Both A and B

• None of the above

Answer explanation

Application servers can be complex to configure and may require significant resources to operate effectively. Therefore, the correct answer is 'Both A and B'.

What is a benefit of a Proxy Server?

• Enhances security and privacy

• Can improve load times with caching

• Both A and B

• None of the above

Answer explanation

A Proxy Server enhances security and privacy by masking your IP address and can improve load times with caching frequently accessed content. Therefore, the correct answer is both A and B.

What is a drawback of a Proxy Server?

• Can become a single point of failure

• May introduce latency

• Both A and B

• None of the above

Answer explanation

A proxy server can become a single point of failure, meaning if it goes down, all traffic is affected. Additionally, it may introduce latency due to the extra processing and routing of requests, making 'Both A and B' the correct choice.