Introduction to Information Technology · Unit 8
Computer Security
Exam-focused notes for Computer Security (Introduction to Information Technology, BIT101): what the TU syllabus asks and how it has actually been tested, with 8 solved past questions from this unit.
What this unit covers
- Computer security definition and targets
- Security mechanisms and approaches
- Security policy definition
- Firewall purpose, function, and types
- Cryptography and encryption methods
- Private key cryptography
- Public key cryptography
- Digital signature
- Technologies for security implementation
Technologies for security implementation
What is security mechanism? Explain in brief about the technologies used for implementing the security mechanisms. [5]
A security mechanism is a technical tool, technique, or procedure designed to detect, prevent, or recover from a security attack. Security mechanisms are used to implement security services such as confidentiality, integrity, authentication, non-repudiation...
Full solved answer →Security mechanisms and approaches
What is security mechanism? List the technologies used for implementing the security mechanisms.[10]
A security mechanism is a process (or a device incorporating such a process) that is designed to detect, prevent, or recover from a security attack. Security mechanisms are the tools and techniques used to implement security services and protect information...
Full solved answer →What is security mechanism? List any two approaches.Discuss the different types of software with example.[5+5]
--- (a) Security Mechanism and Two Approaches A security mechanism is any method, tool, technique, or procedure that is designed to detect, prevent, or recover from a security attack. It is used to implement and enforce the security policy of a system or ne...
Full solved answer →Security policy definition
What is security policy? Explain. [5]
A security policy is a formal set of rules, guidelines, and procedures that defines how an organization manages, protects, and distributes its sensitive information and resources. It specifies what is and what is not allowed in terms of access, use, and pro...
Full solved answer →Computer security definition and targets
What do you understand by the term Computer security? Explain functions of Firewall. [5]
Computer security refers to the protection of computer systems, networks, and data from unauthorized access, damage, theft, misuse, or disruption. It involves implementing policies, procedures, and technical measures to ensure: - Confidentiality - Informati...
Full solved answer →What do you understand by the term Computer security? What are the targets of the security attack? [5]
Computer Security refers to the protection of computer systems, networks, and data from unauthorized access, theft, damage, disruption, or misuse. It encompasses the policies, procedures, and technical measures used to prevent unauthorized access, alteratio...
Full solved answer →Firewall purpose, function, and types
What is the purpose and function of firewall?Name and explain the three types of firewall.[2+8]
A firewall is a network security system (hardware or software) that monitors and controls incoming and outgoing network traffic based on a set of predefined security rules. Purpose: - To act as a protective barrier between a trusted internal network (e.g., ...
Full solved answer →Cryptography and encryption methods
What is cryptography? Explain private key cryptography and public key cryptography. [1+4]
Note: No specific curriculum notes were found for this topic. The answer below is based on standard, well-established cryptography concepts as taught in BSc CSIT programs. --- Cryptography is the science and art of transforming readable data (plaintext) int...
Full solved answer →Make Unit 8 stick
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