IS 435 CH3 11e

Adding applications that cannot tolerate jitter may require ________. A) switch upgrades B) improved switch management C) improved security D) all of the above

A) switch upgrades

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

A) the speed a network actually provides to users

Forwarding functions are located in routers in ________. A) traditional operation B) SDN C) both A and B D) neither A nor B

A) traditional operation

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

B) 10

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

B) 5

________ 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

B) Momentary traffic peaks

The SNMP ________ command changes how managed devices operate. A) Get B) Set C) both A and B D) neither A nor B

B) Set

Routers and switches must support ________. A) northbound APIs B) Southbound APIs C) both A and B D) neither A nor B

B) Southbound APIs

Compared to priority, overprovisioning capacity can reduce ________. A) equipment cost B) management labor C) both A and B D) neither A nor B

B) management labor

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

B) may pay a penalty

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

B) milliseconds (ms)

An SLA specifies ________. A) maximum availability B) minimum availability C) both A and B D) neither A nor B

B) minimum availability

An SLA specifies ________. A) maximum speed B) minimum speed C) both A and B D) neither A nor B

B) minimum speed

Trunk lines in the Internet core are ________. A) dedicated B) multiplexed C) both A and B D) neither A nor B

B) multiplexed

SNMP agents communicate with the ________. A) network visibility program B) network management program C) MIB D) all of the above

B) network management program

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

B) public switched telephone network (PSTN)

Ping tells you ________. A) latency B) round-trip latency C) cumulative latency to each router along the route D) none of the above

B) round-trip latency

Momentary traffic peaks usually last a few ________ or less. A) milliseconds B) seconds C) minutes D) hours

B) seconds

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

B) worst case

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

C) 1.25 Mbps

Guarantees for quality of service are called ________. A) QoS-G B) QoS metrics C) SLAs D) QoS guarantees

C) SLAs

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

C) both A and B

Momentary traffic peaks can lead to ________. A) latency B) packet loss C) both A and B D) neither A nor B

C) both A and B

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

C) both A and B

Using the SNMP Set command ________. A) saves management labor B) requires excellent security C) both A and B D) neither A nor B

C) both A and B

SNMP network management ________. A) increases total cost B) does not affect total cost C) decreases total cost D) causes arthritis

C) decreases total cost

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

C) individual throughput

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

C) metrics

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

C) service

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

A) the SDN controller

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

A) 7

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

A) Availability

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

A) ask agents for information about the managed device

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

A) bits per second

Routing packets is an example of ________. A) forwarding B) routing complexity C) hardwiring D) control

A) forwarding

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

A) high level

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

A) in the MIB

T/F Priority is a way to handle a chronic lack of capacity.

FALSE

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

A) northbound APIs

Using standard configurations ________. A) saves money B) gives management agility C) both A and B D) neither A nor B

A) saves money

Control is done on individual switches and routers in ________. A) traditional operation B) SDN C) both A and B D) neither A nor B

A) traditional operation

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

A) jitter

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

A) latency

SDN holds the promise of bringing ________. A) lower cost B) lower agility C) both A and B D) neither A nor B

A) lower cost

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

A) lower cost

An SLA specifies ________. A) maximum jitter B) minimum jitter C) both A and B D) neither A nor B

A) maximum jitter

An SLA specifies ________. A) maximum latency B) minimum latency C) both A and B D) neither A nor B

A) maximum latency

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

D) neither A nor B

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

B) change router operation

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

B) southbound APIs

SNMP agents can initiate ________. A) Get commands B) traps C) both A and B D) neither A nor B

B) traps

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

B) Traceroute

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.

B) VoIP

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

B) are required to make SDN work effectively

ISPs usually offer QoS guarantees to ________. A) residential customers B) business customers C) both A and B D) neither A nor B

B) business customers

Creating routing tables is an example of ________. A) forwarding B) routing complexity C) hardwiring D) control

D) control

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

C) both A and B

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

C) both A and B

Traffic shaping may ________ traffic that is undesirable. A) prohibit B) limit C) both A and B D) neither A nor B

C) both A and B

Creating switching tables is an example of ________. A) forwarding B) routing complexity C) hardwiring D) control

D) control

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

D) SDN controller

Which of the following is NOT governed by the SNMP standard? A) agents B) MIB C) network management program D) network visibility program

D) network visibility program

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

D) none of the above

To determine if a host is reachable, you send a(n) ________. A) SNMP SET command B) MIB C) trap D) ping

D) ping

For analysis, network administrators usually interact primarily with ________. A) agents B) the MIB C) the network management program D) the network visualization program

D) the network visualization program

T/F In SNMP, the manager communicates directly with the managed device.

FALSE