Exam 12: Network Security

____________________ techniques that observe and record some aspect of the user,such as voiceprints,fingerprints,eyeprints,and faceprints,appear to be the wave of the future to replace passwords.

A(n)______________________________ is either specialized software on a network or a trusted third-party organization or business that issues and manages certificates.

IEEE ____ addresses both weaknesses of WEP by allowing the keys,encryption algorithms,and negotiation to be dynamically assigned,and by adopting the AES encryption based on the Rijndael algorithm with 128-,192-,or 256-bit keys.

A(n)____________________ is a condition in which the Internet ping program is used to send a flood of packets to a server to make the server inoperable.

Controlling access to a computer network involves deciding and then limiting who can use the system and when the system can be used.

One of the primary functions of Kerberos is to authenticate users.

A mobile malicious code is also known as ____________________ because it is hiding inside a harmless-looking piece of code.

____ is an authentication protocol designed to work on client/server networks that use secret or symmetric cryptography.

The ____ firewall is essentially a router that has been programmed to filter out certain IP addresses or TCP port numbers.

A firewall cannot limit users on the Internet from accessing certain portions of a corporate network.

Because of security concerns,modern network operating systems do not allow network administrators to create workgroups.

The opposite of asymmetric encryption is ____ encryption,in which one key is used to encrypt and decrypt.

The ____________________ substitution-based cipher uses multiple alphabetic strings to encode the plaintext,rather than one alphabetic string.

How does phishing work?

To authenticate electronic documents as yours,you need to create a digital signature.

Pings are used most commonly by Unix-based systems.

Many certificates conform to the ____ standard.

The DES algorithm works with 128-bit blocks of data.

____ technology essentially takes the data to be transmitted and rather than transmitting it in a fixed bandwidth spreads it over a wider bandwidth.

____________________ (SSL)is an additional layer of software added between the application layer and the transport (TCP)layer that creates a secure connection between sender and receiver.