data defense II

Question 1

the ability to respond to an unexpected hardware or software failure without loss of data or loss of operation

Answer 1

fault tolerance

Question 2

a method of providing fault tolerance by providing duplicate or multiple components that perform the same function

Answer 2

redundancy

Question 3

the actual time required to successfully recover all operations.

Answer 3

Recovery Time Objective (RTO)

Question 4

a measurement of how old data is at the point that it is successfully recovered.

Answer 4

Recovery Point Objective (RPO)

Question 5

it identifies the average lifetime of a system or component.

Answer 5

Mean Time Between Failures (MTBF)

Question 6

measures the average time to failure of a system or component.

Answer 6

Mean Time To Failure (MTTF)

Question 7

it identifies the average amount of time to repair a failed component or to restore operations

Answer 7

Mean Time To Repair (MTTR)

Question 8

combines the RPO, RTO, MTBF, and MTTR to identify the length of time an organization can survive with a specified service, asset, or process down

Answer 8

Maximum Tolerable Downtime (MTD)

Question 9

it is used to secure messages being transmitted on the Internet

Answer 9

SSL

Question 10

SSL uses _____ protocol for secure exchanging of encryption keys.

Answer 10

RSA or
key exchange (KEA)

Question 11

SSL operates at which layer of the OSI model

Answer 11

session (layer 5)

Question 12

ssl uses which transport layer port

Answer 12

443

Question 13

designed to replace SSL

Answer 13

transport layer security (TLS)

Question 14

TLS uses _____ protocol for secure exchanging of encryption keys.

Answer 14

RSA or

Diffie-Hellman

Question 15

allows for secure interactive control of remote systems.

Answer 15

SSH

Question 16

IPSec includes what two protocols

Answer 16

Authentication Header (AH)

encapsulating security payload (ESP)

Question 17

the authentication headers (AH) provides

Answer 17

authenticity, non-repudiation, and integrity

Question 18

Encapsulation security payload (ESP) provides

Answer 18

security and confidentiality

Question 19

what are the two modes of AH and ESP

Answer 19

transport (encrypts data)

tunnel (encrypts packet)

Question 20

the establishment of shared security information between two network entities to support secure communications is called

Answer 20

a security association

Question 21

this protocol is used to establish a security association

Answer 21

internet key exchange (IKE)