NETW4009 Lecture 7 Exam

1. Non-repudiation refers to ______________

Detect modified messages

Sender cannot later falsely deny sending a message. Receiver cannot falsely deny receiving it.

Keep information secret.

Receiver can verify who sender was.

2. Making sure that the data has not been changed unintentionally, due to an accident or malice, is:

Integrity

Confidentiality

Availability

Auditability

3. Network security aims to provide several key services, which are?

Data integrity, data strategy, data mining

Data and system availability, data storage, data confidentiality

Data integrity, data and system availability, data confidentiality

Data strategy, data integrity, data center.

4. When an email user accesses his account, he fills the password field. This is required for

Identification

Authentication

Hashing

None of the above

5. MD5 is _______ algorithm

An encryption

A decryption

A hash

A public key

6. Which of the following is responsible for MOST of the security incidents?

Equipment failure

Software failure

Personnel

Hackers

7. Which option is a desirable feature of using symmetric encryption algorithms?

They are often used for wire-speed encryption in data networks

They offer simple key management properties

They are best used for one-time encryption needs.

8. RSA encryption is _____________ ; whereas RSA decryption is ______________

Slow, fast

Slow, slow

Fast, fast

Fast, slow

Netw4009 Lecture 7 Exam