N5 CS - Security

What is the primary function of a firewall?

• To block viruses

• To restrict access to a network

• To manage user passwords

• To encrypt data

Which of the following is NOT a function of a firewall?

• Encrypting data

• Blocking unauthorized access

• Filtering network traffic

• Setting rules for data packets

What does a firewall use to decide which data is allowed through?

• Antivirus definitions

• Usernames and passwords

• Encryption keys

• Specific rules

What is required to block viruses?

• A strong password

• A firewall

• Antivirus software

• Encryption

What analogy is used to describe a firewall in the text?

• A safe

• A bouncer at a nightclub

• A security camera

• A locked door

What is the role of encryption?

• To make data readable

• To protect data by making it unreadable

• To filter network traffic

• To block unauthorized access

What is asymmetric encryption?

• Using different keys for each encryption session

• Using a private key for encryption and a public key for decryption

• Using a public key for encryption and a private key for decryption

• Using the same key for both encryption and decryption

What does the text compare to leaving your front door open?

• Not encrypting data

• Not having a firewall

• Not updating passwords

• Not using antivirus software

Which of the following best describes the purpose of network security?

• To allow unrestricted access to all users

• To protect data and resources from unauthorized access

• To slow down network traffic

• To delete old files automatically

Which device or software acts as a barrier between a trusted network and an untrusted network?

• Firewall

• Router

• Switch

• Antivirus