Jane is working as a security professional at CyberSol Inc. She was tasked with ensuring the authentication and integrity of messages being transmitted in the corporate network. To encrypt the messages, she implemented a security model in which every user in the network maintains a ring of public keys. In this model, a user needs to encrypt a message using the receiver's public key, and only the receiver can decrypt the message using their private key. What is the security model implemented by Jane to secure corporate messages?

1. A. Zero trust network
2. B. Transport Layer Security (TLS)
3. C. Secure Socket Layer (SSL)
4. D. Web of trust (WOT)

Correct Answer: D

Which type of security feature stops vehicles from crashing through the doors of a building?

1. A. Bollards
2. B. Receptionist
3. C. Mantrap
4. D. Turnstile

Correct Answer: A

Robert, a professional hacker, is attempting to execute a fault injection attack on a target IoT device. In this process, he injects faults into the power supply that can be used for remote execution, also causing the skipping of key instructions. He also injects faults into the clock network used for delivering a synchronized signal across the chip.
Which of the following types of fault injection attack is performed by Robert in the above scenario?

1. A. Frequency/voltage tampering
2. B. Optical, electromagnetic fault injection (EMFI)
3. C. Temperature attack
4. D. Power/clock/reset glitching

Correct Answer: D
These types of attacks occur when faults or glitches are INJECTED into the Power supply that can be used for remote execution.

An organization is performing a vulnerability assessment tor mitigating threats. James, a pen tester, scanned the organization by building an inventory of the protocols found on the organization's machines to detect which ports are attached to services such as an email server, a web server or a database server. After identifying the services, he selected the vulnerabilities on each machine and started executing only the relevant tests. What is the type of vulnerability assessment solution that James employed in the above scenario?

1. A. Product-based solutions
2. B. Tree-based assessment
3. C. Service-based solutions
4. D. inference-based assessment

Correct Answer: D
In an inference-based assessment, scanning starts by building an inventory of the protocols found on the machine. After finding a protocol, the scanning process starts to detect which ports are attached to services, such as an email server, web server, or database server. After finding services, it selects vulnerabilities on each machine and starts to execute only those relevant tests.

Which type of malware spreads from one system to another or from one network to another and causes similar types of damage as viruses do to the infected system?

1. A. Rootkit
2. B. Trojan
3. C. Worm
4. D. Adware

Correct Answer: C