IS 3120 CHAPTER 13

Question 1

The ratio of the total number of bits transmitted to the bits that were modified in transmission

Answer 1

Bit error rate (BER)

Question 2

A primary global telecommunications carrier building upon its strong global connections and former monopoly role.

Answer 2

British Telecom (BT)

Question 3

Planning primarily for the people response to a disaster, The elements that would be included are policy related to the continuation of business during and immediately following a disaster.

Answer 3

Business continuity planning (BCP)

Question 4

.A facility owned and operated by a telecommunications carrier where all its common switching equipment is located.

Answer 4

Central Office (CO)

Question 5

Computer software used to prepare mechanical or engineering drawings. This software is used widely in creating network diagrams and “as built” documentation of equipment racks and data centers.

Answer 5

Computer-aided design (CAD)

Question 6

Planning primarily for the technical response to a disaster.

Answer 6

Disaster recovery planning (DRP)

Question 7

A measurement or calculated number for the mean amount of time between equipment failures. This was measured for years, or even decades, in the traditional telco network, while it may be measured in weeks, days, or even hours in modern IP networks.

Answer 7

Mean time between failures (MTBF)

Question 8

A measurement or estimate of the time required to install a specific piece of equipment or an entire service.

Answer 8

Mean time to install (MTTI)

Question 9

A measurement or calculated number for the mean amount of time required to repair a specific piece of failed equipment.

Answer 9

Mean time to repair (MTTR)

Question 10

A facility operated by an ISP where all its common routing equipment, and very often servers, are located.

Answer 10

Point of presence (POP)

Question 11

A term for government-owned telecommunications monopolies outside the US. Traditionally these functions were housed in a single government ministry.

Answer 11

PTT (postal, telephone, and telegraph) agency)

Question 12

.A special version of laval area network where all devices connected to the SAN are storage devices or servers required to manage storage devices.

Answer 12

Storage area network (SAN)

Question 13

Usually refers to a specific set of bits in the header of IP packets that indicate what type of priority treatment the packet expects from intermediate relaying systems (routers). This can also refer to the desirable treatment, and not specifically to the bits themselves.

Answer 13

Type of service (TOS)

Question 14

A network built using public/shared network services, but which has the appearance to the users of a private network. Users, for instance, cannot reach the Internet directly from this nor can Internet users reach it without special client software. This almost universally use some sort of cryptography to protect the integrity of the information.

Answer 14

Virtual private network (VPN).

Question 15

1. One of the first steps in change control is determining a normal baseline from which changes will be made.
   TRUE OR FALSE

Answer 15

TRUE

Question 16

2. Which of the following is not a generation of networking as outlined in this chapter?
3. First generation: mainframe computers owned and operated by the organization
4. Second generation: minicomputers owned and operated by the organization
5. Third generation: personal computers owned and operated by individuals
6. Fourth generation: PCs and mobile devices owned and operated by individuals
7. Fifth generation: mobile devices, including Droids and tablets linked to social networking sites such as Facebook

Answer 16

Fifth generation: mobile devices, including Droids and tablets linked to social networking sites such as Facebook

Question 17

3. Which of the following is not a usual parameter in a network Service Level Agreement?
4. Availability
5. Delay variation
6. Frequency response
7. Delay
8. Packet delivery

Answer 17

Frequency response

Question 18

4. The use of serve-level agreements in networking originated in ___.
5. the US by MCI
6. Britain by BT
7. Britain by Mercury Communications
8. France by France Telecom
9. Germany by the Deutsch Bundespost

Answer 18

Britain by BT

Question 19

5. Packet deliver/discard ___.
6. Are two very different measurements
7. Is enforced by the PDD algorithm
8. Is enforced based on IP TOS bits
9. Impacts certain applications more than other
10. None of the above

Answer 19

Impacts certain applications more than other

Question 20

6. Delay ___.
7. Occurs in both circuit and packet networks
8. Occurs only in circuit networks
9. Occurs only in packet networks
10. Occurs in neither circuity nor packet networks

Answer 20

Occurs in both circuit and packet networks

Question 21

7. Delay variation ___.
8. Occurs only in packet networks
9. Occurs only in circuit networks
10. Occurs in both circuit and packet networks
11. Occurs in neither circuit nor packet networks

Answer 21

Occurs only in packet networks

Question 22

8. SLA metrics from different carriers and service provider ___. Choose all that apply.
9. Are possibly measured in different places in the network
10. May or may not represent round-trip delay
11. Are measured and calculated per RFC 2109
12. Are measured and calculated per TIA 1405
13. None of the above

Answer 22

Are possibly measured in different places in the network

May or may not represent round-trip delay

Question 23

9. Availability calculations are differentiated based on ___ availability.
10. Network, component, and service
11. Day, month, year
12. IETE, ITU, and Telco
13. End system, intermediate system, and server

Answer 23

Network, component, and service

Question 24

10. MTBF stands for ___.
11. Mean time between failures
12. Maximum time between failures
13. Minimum time between failures
14. Mean time before failures

Answer 24

Mean time between failures

Question 25

11. Internal service-level agreements ___. (Choose all that apply)
12. Replace external service agreements
13. Can never be better than external SLAs
14. Often promise different levels of service to different applications or traffic types
15. Often tiered delay and delay variation metrics based on distance between the communicating end points

Answer 25

Can never be better than external SLAs
Often promise different levels of service to different
applications or traffic types
Often tiered delay and delay variation metrics based on distance between the communicating end points

Question 26

12. Change control borads are technical bodies and do not need to consider policy, finance, or other nontechnical aspects of proposed changes.
    TRUE OR FALSE

Answer 26

FALSE

Question 27

13. BCP stands for ___.
14. Business continuity planning
15. Business career planning
16. Business continuity policy
17. Business continuity practices

Answer 27

Business continuity planning

Question 28

14. DRP stands for ___.
15. Disaster recovery planning
16. Disaster recovery procedures
17. Design recommendation policy
18. Design review policy

Answer 28

Disaster recovery planning

Question 29

15. An organization must choose between BCP and DRP as an approach for dealing with upland events affecting their telecommunications infrastructure.
    TRUE OR FALSE

Answer 29

FALSE