Question 1

________ is the percentage of time that a network is available for use.
A)Availability
B)Downtime
C)QoS
D)none of the above

Accepted Answer

Availability refers to the amount of time a network is accessible and functional for use. It is often measured as a percentage of uptime versus downtime.

Question 2

Latency is usually measured in ________.
A)bits per second (bps)
B)milliseconds (ms)
C)minutes of downtime
D)none of the above

Accepted Answer

Latency is typically measured in milliseconds (ms), which refers to the time it takes for data to travel from one point to another in a network. It is not measured in bits per second (bps) or minutes of downtime.

Question 3

Compared to network demand,network budgets are growing ________.
A)faster
B)as fast as it used to be
C)slower
D)both A and C

Accepted Answer

The statement suggests that network budgets are not keeping up with network demand. Therefore, the options given are either slower or as fast as it used to be. Since there is no mention of budgets growing faster than demand, option A can be eliminated. Hence, the best choice is C - slower.

Question 4

When a packet travels through a network,the time it takes to get from the sender to the receiver is called ________.
A)latency
B)milliseconds
C)jitter
D)throughput

Accepted Answer

Latency refers to the time it takes for a packet to travel from the sender to the receiver through a network. It is a crucial factor in determining the performance of a network. Throughput refers to the amount of data that can be transmitted over a network in a given time, and is measured in bits or bytes per second. Jitter refers to the variation in the delay of packet delivery and can cause disruptions in real-time applications like video conferencing. Milliseconds is a unit of time measurement and is not specific to network performance.

Question 5

In QoS,the S stands for ________.
A)software
B)security
C)service
D)satisfaction

Accepted Answer

QoS stands for Quality of Service, which refers to the level of service or performance a network can provide to specific applications, users, or data flows. Therefore, the S in QoS represents "service."

Question 6

An SLA for latency should specify a ________.
A)maximum latency
B)minimum latency
C)both A and B
D)neither A nor B

Accepted Answer

An SLA for latency should specify a maximum latency, which is the maximum acceptable delay in transmitting data between two points. It is important for services such as VoIP, video streaming, and online gaming, where any delays can cause issues for users. A minimum latency is not necessary to specify as it is not a measure of performance but rather a measure of the speed of transmission.

Question 7

Jitter is a problem for ________.
A)downloading a file attached to an e-mail
B)e-mail
C)both A and B
D)neither A nor B

Accepted Answer

Jitter refers to the variation in packet travel time. It's significant in real-time communications such as VoIP or online gaming, where timing is crucial. Downloading a file or email doesn't require real-time packet delivery, making jitter irrelevant to these activities.

Question 8

An SLA for speed should specify a ________.
A)maximum speed
B)minimum speed
C)both A and B
D)neither A nor B

Accepted Answer

An SLA (Service Level Agreement) for speed should specify a minimum speed to ensure that the service provider delivers at least that level of performance.

Question 9

An SLA should specify the ________.
A)best case
B)worst case
C)both A and B
D)neither A nor B

Accepted Answer

The answer of An SLA should specify the ________.
A)best case
B)worst...

Question 10

In a coffee shop hot spot,the rated speed is 10 Mbps.Throughput is about half of the rated speed.There are ten people using the hot spot.You and three others are transmitting or receiving at a particular moment.What speed should you expect to get?
A)0.5 Mbps
B)1 Mbps
C)1.25 Mbps
D)2.5 Mbps

Accepted Answer

The total throughput at the hot spot is 5 Mbps (half the rated speed of 10 Mbps). Out of the ten people using the hot spot, only four are transmitting or receiving at a particular moment. So, the expected speed for each person will be 5 Mbps / 4 = 1.25 Mbps. Therefore, the correct choice is C).

Question 11

Transmission speed is normally measured in ________.
A)bits per second
B)bytes per second
C)octet per second
D)none of the above

Accepted Answer

Transmission speed is typically measured in bits per second, as it refers to the number of digital signals (bits) that can be transmitted per second over a communication channel. Bytes per second and octets per second are not commonly used measures of transmission speed.

Question 12

QoS is quantified through ________.
A)criteria
B)consensus
C)metrics
D)none of the above

Accepted Answer

QoS is quantified through various metrics such as delay, throughput, packet loss, jitter, and availability. These metrics help in evaluating the performance and effectiveness of QoS in a network.

Question 13

Which of the following usually has higher availability?
A)data networks
B)Public Switched Telephone Network
C)Both of the above usually have equal availability.
D)neither A nor B

Accepted Answer

The Public Switched Telephone Network (PSTN) usually has higher availability than data networks because it is a highly regulated and reliable system that has been in place for decades. PSTN is designed to always have a connection available, even in the event of power outages or natural disasters. Data networks, on the other hand, can be affected by various factors such as network congestion, equipment failure, software glitches, and reliability issues of internet service providers.

Question 14

Error rates can soar when the network traffic level ________.
A)is at a high level
B)is at an average level
C)is at a low level
D)none of the above

Accepted Answer

When the network traffic level is at a high level, it puts more pressure on the network infrastructure, which can cause congestion and packet loss. This, in turn, can lead to a surge in the error rate.

Question 15

An SLA for availability should specify a ________.
A)maximum availability
B)minimum availability
C)both A and B
D)neither A nor B

Accepted Answer

An SLA (Service Level Agreement) for availability should specify a minimum availability to ensure that the service provider guarantees a certain level of uptime.

Question 16

Jitter is a problem for ________.
A)voice over IP (VoIP)
B)streaming media
C)both A and B
D)neither A nor B

Accepted Answer

Jitter is a problem for both voice over IP and streaming media. Jitter causes disruptions and delays in the data being transmitted, resulting in poor quality audio and video for VoIP and streaming media.

Question 17

Users of an access point share the transmission capacity of the access point.The throughput a user gets is called the ________.
A)rated speed
B)aggregate throughput
C)individual throughput
D)all of the above

Accepted Answer

The term used for the throughput a user gets when sharing an access point is individual throughput. Rated speed refers to the maximum theoretical speed of the access point, while aggregate throughput refers to the total amount of data transmitted by all users on the access point combined.

Question 18

Variability in delay is called ________.
A)jitter
B)variance
C)a QoS failure
D)latency

Accepted Answer

Jitter refers to the variability in delay experienced by data packets or voice signals on a network. It can lead to disruptions or poor quality of service (QoS) in real-time applications like video conferencing or online gaming. Variance and latency are related to delay but do not specifically address variability. A QoS failure is a general term that could refer to a number of different issues affecting network performance.

Question 19

Errors may substantially reduce throughput in ________.(Pick the standard most affected.)
A)IP
B)TCP
C)UDP
D)HTTP

Accepted Answer

TCP (Transmission Control Protocol) is a reliable protocol that ensures data is delivered correctly and in the right order. Errors in TCP can cause the protocol to initiate retransmissions, which can substantially reduce throughput. This is because retransmissions consume network resources and cause delays in delivering data. Therefore, TCP is the standard most affected by errors that reduce throughput.

Question 20

Throughput is ________.
A)the speed a network actually provides to users
B)a network's rated speed
C)both A and B
D)neither A nor B

Accepted Answer

Throughput refers to the actual speed that a network provides to users, which may differ from its rated speed. Therefore, option A is the correct answer as it defines the meaning of throughput accurately. Option B is incorrect as throughput is not the same as a network's rated speed, although the rated speed may give an idea of the potential maximum throughput that can be achieved. Options C and D are also incorrect as they do not accurately represent the meaning of throughput.

Quiz 4: Network and Security Management

________ is the percentage of time that a network is available for use.

Latency is usually measured in ________.

Compared to network demand,network budgets are growing ________.

When a packet travels through a network,the time it takes to get from the sender to the receiver is called ________.

In QoS,the S stands for ________.

An SLA for latency should specify a ________.

Jitter is a problem for ________.

An SLA for speed should specify a ________.

An SLA should specify the ________.

In a coffee shop hot spot,the rated speed is 10 Mbps.Throughput is about half of the rated speed.There are ten people using the hot spot.You and three others are transmitting or receiving at a particular moment.What speed should you expect to get?

Transmission speed is normally measured in ________.

QoS is quantified through ________.

Which of the following usually has higher availability?

Error rates can soar when the network traffic level ________.

An SLA for availability should specify a ________.

Jitter is a problem for ________.

Users of an access point share the transmission capacity of the access point.The throughput a user gets is called the ________.

Variability in delay is called ________.

Errors may substantially reduce throughput in ________.(Pick the standard most affected.)

Throughput is ________.