Chapter Exam

Chapter-12 Security Aspects — Online MCQ Test

Q: Which of the following is NOT a type of malware?

Answer: C. Encryption — Encryption is a security technique, not a type of malware. Virus, Worm, and Trojan are all types of malware.

Q: Which layer of TCP/IP is responsible for routing?

Answer: C. Internet Layer — The Internet Layer, which includes IP (Internet Protocol), is responsible for routing data packets across networks.

COMPUTER SCIENCE · Grade 12 · CBSE(NCERT)

Practice Chapter-12 Security Aspects with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 12 COMPUTER SCIENCE. This chapter covers: malware - phishing - spoofing - firewall - cookies - HTTP - FTP - TCP/IP. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter-12 Security Aspects — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 12 COMPUTER SCIENCE — Chapter-12 Security Aspects, with answers and explanations. These are sample questions; the exam has its own separate question set.

What is malware?

A. Software designed to harm or exploit a computer system ✓
B. A type of firewall protection
C. A secure communication protocol
D. A web browser extension

Answer: A. Software designed to harm or exploit a computer system
Malware is malicious software designed to damage, disrupt, or gain unauthorized access to computer systems.

Which of the following is NOT a type of malware?

A. Virus
B. Worm
C. Encryption ✓
D. Trojan

Answer: C. Encryption
Encryption is a security technique, not a type of malware. Virus, Worm, and Trojan are all types of malware.

Which layer of TCP/IP is responsible for routing?

A. Application Layer
B. Transport Layer
C. Internet Layer ✓
D. Link Layer

Answer: C. Internet Layer
The Internet Layer, which includes IP (Internet Protocol), is responsible for routing data packets across networks.

Analyze: A company wants to protect its internal network from external threats. Which combination of security measures would be most effective?

A. Only using passwords
B. Firewall + encryption + access controls + regular security updates ✓
C. Disabling all network connections
D. Installing antivirus software only

Answer: B. Firewall + encryption + access controls + regular security updates
A multi-layered security approach combining firewalls, encryption, access controls, and regular updates provides comprehensive protection against various threats.

Why might a sophisticated attacker use zero-day exploits rather than known vulnerabilities?

A. They are easier to detect
B. They avoid triggering security patches and defenses, allowing attacks to succeed against unprepared systems ✓
C. They are less effective
D. All systems are automatically protected

Answer: B. They avoid triggering security patches and defenses, allowing attacks to succeed against unprepared systems
Zero-day exploits target unknown vulnerabilities before vendors release patches, making them highly effective as no defense mechanisms exist yet.