Ch. 17 Packet

Question 1

When designing and building a network, which requirements define the network’s needs?

Answer 1

List of requirements

Question 2

When designing and building a network, which requirements help in determining how to organize the network?

Answer 2

Device types/requirements

Question 3

When designing and building a network, which requirements help in determining how to connect to the Internet

Answer 3

Wired/wireless considerations

Question 4

By going __________ for some or all server resources, you can reduce your power usage and increase uptime.

Answer 4

virtual

Question 5

How do many small networks avoid using a full-blown file server?

Answer 5

Small networks take advantage of network attached storage (NAS).

Question 6

What type of conversion process occurs with power converters?

Answer 6

AC to DC

Question 7

Which device is an example of a peripheral device?

Answer 7

Printer

Question 8

Which device is an example of a serious enterprise WAP?

Answer 8

A Cisco Aironet device

Question 9

Before plugging in RJ 45 cables, what should you determine to save a lot of time and effort once the system installation starts?

Answer 9

Internal IP addressing scheme

Question 10

Which company is leading the cutting edge of the unified communication (UC) field?

Answer 10

Cisco

Question 11

Which TCP/IP ports does the Real-time Transport Protocol (RTP) use for VoIP systems?

Answer 11

5004 and 5005

Question 12

Which TCP/IP ports does the Session Initiation Protocol (SIP) use for VoIP systems?

Answer 12

5060 and 5061

Question 13

Unified communication leans heavily on ___________ for transmission.

Answer 13

SIP and RTP

Question 14

Which TCP/IP port does unified communication use?

Answer 14

1720

Question 15

Which TCP/IP ports does MGCP use?

Answer 15

2427 and 2727

Question 16

What bandwidth does ISDN offer?

Answer 16

128 Kbps

Question 17

When talking about QoS for medianets, an administrator needs to develop the concept of __________.

Answer 17

differentiated Services (DiffServ)

Question 18

Which value of the ECN field is the default, indicating “not QoS aware”?

Answer 18

00

Question 19

Which value of the ECN field indicates “QoS aware, congestion encountered”?

Answer 19

11

Question 20

Which value of the ECN field indicates “QoS aware, no congestion”?

Answer 20

10

Question 21

Within the Differentiated Services (DiffServ) architecture, how many classes of service (CoS) are there?

Answer 21

Eight

Question 22

In most QoS setups using differentiated services code point (DSCP) there are only __________ levels of priority.

Answer 22

four

Question 23

In the early days of automation, you might have a single person, known as a(n) __________, monitoring a machine that produced something.

Answer 23

operator

Question 24

Which industrial control system (ICS) device monitors characteristics like temperature?

Answer 24

Sensor

Question 25

Which industrial control system (ICS) device knows enough to manage a process?

Answer 25

Controller

Question 26

In a modern DCS each of the local controllers connects (eventually) to a centralized controller—what CompTIA calls the __________—where global changes can be made managed.

Answer 26

ICS server

Question 27

Which industrial control system (ICS) device makes changes that modify a characteristic such as temperature?

Answer 27

Actuator

Question 28

A supervisory control and data acquisition (SCADA) system is a subset of the __________.

Answer 28

industrial control system (ICS)

Question 29

ICS/DCS/SCADA and other networks are traditionally good candidates for network __________.

Answer 29

segmentation

Question 30

Which term refers to the physical separation of your network from every other network?

Answer 30

Air gap