Encryption (some firewalls)

Encryption is?

• A code invented by Albert Einstein
• Scrambling or changing a message to hide text
• Unscrambling a message to make it meaningful
• Dangerous to the internet.

Decryption is? 

• A computer that has a virus.
• Scrambling or changing a message to hide text.
• Unscrambling the message to make it readable.
• Adding codes together.

What type of encryption are you using if you work with a pair of keys?

(a)  

Which Roman Emperor used an encryption method that reflects his name?

• Julius Irving
• Caesar Salard
• George Washington
• Julius Caesar
• Kale Salad

Which type of firewall filtering is the most sophisticated?

• Odd parity
• Low frequency
• Stateful
• Stateless

Which statement regarding a key is not necessarily true?

• Used for Caesar's Cipher.
• Something only sender and receiver know.
• It is a secret password for unlocking a message.
• Consists of 24 letters.

Which port does Secure Shell (SSH) usually use?

• 22
• 2
• 200
• 60

What type of key is produced by the application of the Diffie-Hellman key exchange?

(a)  

If a firewall is using an access control list (ACL) what is it doing?

• Stateful inspection
• Using a static IP address
• Using a dynamic IP address
• Static filtering

Stateful inspection uses a connection table.

• True
• False