Network Security Concepts

What is the OSI Security Architecture?

• The OSI Security Architecture is a type of hardware device

• The OSI Security Architecture is a programming language

• The OSI Security Architecture is a framework that defines security mechanisms and services to protect data communication within a network.

• The OSI Security Architecture is a type of computer virus

Name a type of security attack.

• Distributed Denial of Service Attack

• Phishing Attack

• Social Engineering Attack

• Malware Attack

List one security service.

• Antivirus

• Encryption

• Intrusion Detection System

• Firewall

Explain a network security model.

• A network security model is a type of programming language

• A network security model is a type of hardware device

• A network security model is a type of computer virus

• A network security model is a framework that defines the processes and mechanisms used to secure a network infrastructure.

Define substitution techniques in encryption.

• Substitution techniques involve converting plaintext to binary directly.

• Substitution techniques involve shuffling characters randomly.

• Substitution techniques involve replacing plaintext characters with ciphertext characters based on a fixed system or key.

• Substitution techniques involve repeating the same character for each plaintext character.

Describe transposition techniques in encryption.

• Transposition techniques involve adding random characters to a message.

• Transposition techniques involve changing the font style of characters in a message.

• Transposition techniques involve converting characters into their ASCII values.

• Transposition techniques involve rearranging the order of characters in a message according to a specific system or key.

What is steganography?

• Steganography is the practice of concealing a message, image, or file within another message, image, or file.

• Steganography is a cooking technique

• Steganography is a type of dance

• Steganography is the study of rocks

What is the purpose of network security?

• To improve network aesthetics

• To increase network speed

• To protect the integrity, confidentiality, and availability of information on a network.

• To reduce network costs

Mention one benefit of classical encryption techniques.

• Faster encryption speed

• Simplicity and ease of implementation

• Increased security

• Better compatibility with modern systems

Explain the concept of security services.

• Security services are measures to enhance system performance.

• Security services involve sharing sensitive information with unauthorized parties.

• Security services focus solely on physical security measures.

• Security services are measures to protect information systems from unauthorized access, use, disclosure, disruption, modification, or destruction.