Deck 3: Network Management

Question 1

Adding applications that cannot tolerate jitter may require ________.

A) switch upgrades
B) improved switch management
C) improved security
D) all of the above

Answer 1

A

Question 2

The business benefit of multiplexing is ________.

A) lower cost
B) higher speed
C) avoiding the need to send many transmission links through narrow conduits
D) security

Answer 2

A

Question 3

Which of the following usually has higher availability?

A) data networks
B) public switched telephone network (PSTN)
C) Both of the above usually have equal availability.
D) neither A nor B

Answer 3

B

Question 4

In a coffee shop,there are ten people sharing an access point with a rated speed of 2Gbps.The throughput is half the rated speed.If each person downloading is getting an average of 200Mbps,how many people are using the Internet at that moment?

A) 10
B) 5
C) 2
D) none of the above

Question 5

Variability in delay is called ________.

A) jitter
B) variance
C) a QoS failure
D) latency

Question 6

Trunk lines in the Internet core are ________.

A) dedicated
B) multiplexed
C) both A and B
D) neither A nor B

Question 7

Latency is usually measured in ________.

A) bits per second (bps)
B) milliseconds (ms)
C) minutes of downtime
D) none of the above

Question 8

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

A) Availability
B) Downtime
C) QoS
D) none of the above

Question 9

Guarantees for quality of service are called ________.

A) QoS-G
B) QoS metrics
C) SLAs
D) QoS guarantees

Question 10

Error rates can soar when the network traffic level is at a(n)________.

A) high level
B) fluctuating level
C) unregulated level
D) none of the above

Question 11

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

Question 12

Transmission speed is normally measured in ________.

A) bits per second
B) bytes per second
C) octets per second
D) none of the above

Question 13

In QoS,the S stands for ________.

A) software
B) security
C) service
D) satisfaction

Question 14

QoS is quantified through ________.

A) criteria
B) consensus
C) metrics
D) none of the above

Question 15

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

Question 16

An SLA specifies the ________.

A) best case
B) worst case
C) both A and B
D) neither A nor B

Question 17

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

A) latency
B) output
C) jitter
D) throughput

Question 18

Jitter is a problem for ________.

A) voice over IP (VoIP)
B) streaming media
C) both A and B
D) neither A nor B

Question 19

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

Question 20

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.If you and three others are transmitting or receiving at the same time,what speed should you expect to get?

A) 0.5 Mbps
B) 1 Mbps
C) 1.25 Mbps
D) none of the above

Question 21

To handle momentary traffic peaks,which would you give higher priority to?

A) e-mail
B) VoIP
C) both A and B
D) It is impossible to say with the information provided.

Question 22

ISPs usually offer QoS guarantees to ________.

A) residential customers
B) business customers
C) both A and B
D) neither A nor B

Question 23

Momentary traffic peaks can lead to ________.

A) latency
B) packet loss
C) both A and B
D) neither A nor B

Question 24

SNMP agents communicate with the ________.

A) network visibility program
B) network management program
C) MIB
D) all of the above

Question 25

The damage of momentary traffic peaks can be addressed by ________.

A) using priority
B) adding more capacity
C) both A and B
D) neither A nor B

Question 26

Traffic shaping may ________ traffic that is undesirable.

A) prohibit
B) limit
C) both A and B
D) neither A nor B

Question 27

An SLA specifies ________.

A) maximum speed
B) minimum speed
C) both A and B
D) neither A nor B

Question 28

Priority is a way to handle a chronic lack of capacity.

Question 29

Which of the following reduces momentary traffic peaks by controlling how much traffic is allowed into the network?

A) overprovisioning
B) priority
C) QoS guarantees
D) none of the above

Question 30

________ can be addressed by using priority.

A) Chronic lacks of capacity
B) Momentary traffic peaks
C) both A and B
D) neither A nor B

Question 31

To determine if a host is reachable,you send a(n)________.

A) SNMP SET command
B) MIB
C) trap
D) ping

Question 32

SNMP network management ________.

A) increases total cost
B) does not affect total cost
C) decreases total cost
D) causes arthritis

Question 33

If you have 10 sites connected by 7 transmission links,how many rows of traffic data will you have in your traffic table?

A) 7
B) 10
C) 14
D) 20

Question 34

Momentary traffic peaks usually last a few ________ or less.

A) milliseconds
B) seconds
C) minutes
D) hours

Question 35

If throughput falls substantially below a QoS guaranteed speed,the ISP ________.

A) always pays a penalty
B) may pay a penalty
C) does not pay a penalty
D) may renegotiate the QoS guarantee for speed

Question 36

An SLA specifies ________.

A) maximum jitter
B) minimum jitter
C) both A and B
D) neither A nor B

Question 37

If you have 10 sites connected by 7 transmission links,how many columns will you have in your traffic table?

A) 7
B) 10
C) 14
D) 20

Question 38

Compared to priority,overprovisioning capacity can reduce ________.

A) equipment cost
B) management labor
C) both A and B
D) neither A nor B

Question 39

An SLA specifies ________.

A) maximum availability
B) minimum availability
C) both A and B
D) neither A nor B

Question 40

An SLA specifies ________.

A) maximum latency
B) minimum latency
C) both A and B
D) neither A nor B

Question 41

SNMP Set commands can ________.

A) ask agents for information about the managed device
B) change router operation
C) both A and B
D) neither A nor B

Question 42

SDN holds the promise of bringing ________.

A) lower cost
B) lower agility
C) both A and B
D) neither A nor B

Question 43

Forwarding functions are located in routers in ________.

A) traditional operation
B) SDN
C) both A and B
D) neither A nor B

Question 44

Using the SNMP Set command ________.

A) saves management labor
B) requires excellent security
C) both A and B
D) neither A nor B

Question 45

Creating switching tables is an example of ________.

A) forwarding
B) routing complexity
C) hardwiring
D) control

Question 46

The SNMP ________ command changes how managed devices operate.

A) Get
B) Set
C) both A and B
D) neither A nor B

Question 47

Using standard configurations ________.

A) saves money
B) gives management agility
C) both A and B
D) neither A nor B

Question 48

SNMP Get commands can ________.

A) ask agents for information about the managed device
B) change router operation
C) both A and B
D) neither A nor B

Question 49

Routing packets is an example of ________.

A) forwarding
B) routing complexity
C) hardwiring
D) control

Question 50

Ping tells you ________.

A) that a host is reachable
B) latency in the connection to the host
C) both A and B
D) neither A nor B

Question 51

Which of the following tells you the cumulative round-trip latency to each router along the route to the host?

A) Ping
B) Traceroute
C) both A and B
D) neither A nor B

Question 52

In SNMP,the manager communicates directly with the managed device.

Question 53

Creating routing tables is an example of ________.

A) forwarding
B) routing complexity
C) hardwiring
D) control

Question 54

The SNMP manager stores the information it receives from Get commands ________.

A) in the MIB
B) on the agent
C) on the managed device
D) in the cloud

Question 55

For analysis,network administrators usually interact primarily with ________.

A) agents
B) the MIB
C) the network management program
D) the network visualization program

Question 56

Which of the following is NOT governed by the SNMP standard?

A) agents
B) MIB
C) network management program
D) network visibility program

Question 57

Control is done on individual switches and routers in ________.

A) traditional operation
B) SDN
C) both A and B
D) neither A nor B

Question 58

Ping tells you ________.

A) latency
B) round-trip latency
C) cumulative latency to each router along the route
D) none of the above

Question 59

SDN can ________.

A) permit routing rules to be changed rapidly
B) reduce router costs
C) both A and B
D) neither A nor B

Question 60

SNMP agents can initiate ________.

A) Get commands
B) traps
C) both A and B
D) neither A nor B

Question 61

In SDN,a switch receives its forwarding table rules directly from ________.

A) the SDN controller
B) an SDN management application
C) another switch
D) an SNMP manager

Question 62

Routers and switches must support ________.

A) northbound APIs
B) Southbound APIs
C) both A and B
D) neither A nor B

Question 63

In SDN,applications ________.

A) increase network management labor
B) are required to make SDN work effectively
C) both A and B
D) neither A nor B

Question 64

Communication between SDN applications and SDN controllers is governed by ________.

A) northbound APIs
B) southbound APIs
C) both A and B
D) neither A nor B

Question 65

In SDN,which device manages the control function for individual devices?

A) SNMP manager console
B) forwarding device itself
C) SDN policy server
D) SDN controller

Question 66

Communication between SDN controllers and routers is governed by ________.

A) northbound APIs
B) southbound APIs
C) both A and B
D) neither A nor B