Chapter 3 Firewalls

Front 1

Which of the following characteristics relates to the term algorithm?

Back 1

A set of rules and procedures—usually mathematical in nature—that can define how the encryption and decryption processes operate

Front 2

Which of the following refers to encoding and decoding information using related but different keys for each process?

Back 2

Asymmetric cryptography

Front 3

Which term describes programs used to control access to computer resources, enforce policies, audit usage, and provide billing information?

Back 3

Authentication, authorization, and accounting (AAA) services

Front 4

Which term describes the act of working from a home, remote, or mobile location while connecting into the employer’s private network, often using a VPN?

Back 4

Telecommuting

Front 5

Which term describes the seemingly random and unusable output from a cryptographic function applied to original data?

Back 5

Ciphertext

Front 6

Which of the following characteristics describes an edge router?

Back 6

The last device owned and controlled by an organization before an ISP or telco connection

Front 7

What is compression?

Back 7

Removal of redundant or superfluous data or space to reduce the size of a data set

Front 8

Which term describes the process of converting ciphertext back into plain text?

Back 8

Decryption

Front 9

Which term describes a VPN created between two individual hosts across a local or intermediary network?

Back 9

Host-to-host VPN

Front 10

Which term describes a network, network link, or channel located between the endpoints of a VPN?

Back 10

Intermediary network

Front 11

Which term describes encryption that protects the entire original IP packet’s header and payload?

Back 11

Tunnel mode encryption

Front 12

Which of the following describes a dedicated leased line?

Back 12

Allows communication between one site and another

Front 13

By what mechanism do VPNs securely exchange session keys between endpoints?

Back 13

Digital envelope

Front 14

A personal firewall is an appliance firewall placed on the border or edge of an organization’s network.

Back 14

False

Front 15

A private key is kept secret and used only by the intended entity.

Back 15

True

Front 16

A one-way function refers to a mathematical operation performed in one direction; reversing the operation is easy.

Back 16

False

Front 17

Transport mode encryption protects only the original IP packet’s payload, which retains its original IP header.

Back 17

True

Front 18

Hashing verifies data integrity by using algorithms to produce unique numbers from datasets known as hash values.

Back 18

True

Front 19

When too much data crosses a network segment, throughput and latency are increased.

Back 19

False

Front 20

A split tunnel is a VPN connection that allows simultaneous access to the secured VPN link and unsecured access to the Internet across the same connection.

Back 20

True

Front 21

A VPN appliance can be placed inside and outside the corporate firewall.

Back 21

True

Front 22

Intranet access allows businesses, partners, vendors, suppliers, and so on to gain access to resources.

Back 22

False

Front 23

Symmetric cryptography encodes and decodes information using different keys for each process.

Back 23

False

Front 24

A digital envelope is a secure communication based on public-key cryptography that encodes a message or data with the public key of the intended recipient.

Back 24

True

Front 25

Nonrepudiation ensures that a sender cannot deny sending a message.

Back 25

True

Front 26

asda

Back 26

asd