BUS 111 Ch 3

8) ________ 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

29) A packet will definitely get through if it has ________. A) QoS reserved capacity B) priority C) both A and B

A) QoS reserved capacity

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

A) bits per second

57) 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

30) Compared to other methods for reducing problems during momentary traffic peaks, overprovisioning ________. A) increases capital cost B) increases labor costs C) both A and B D) neither A nor B

A) increases capital cost

10) 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

A) is at a high level

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

A) jitter

12) 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

A) latency

62) 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

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

A) maximum jitter

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

A) maximum latency

32) Priority addresses the problem of ________. A) momentary traffic peaks B) chronic under-capacity C) both A and B D) neither A nor B

A) momentary traffic peaks

48) Which of the following must be followed? A) standards B) guidelines C) both A and B D) neither A nor B

A) standards

5) 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

60) 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

25) Which of the following is latency intolerant? A) video B) e-mail C) both A and B D) neither A nor B

A) video

26) Overprovisioning is ________. A) wasteful of capacity B) highly labor-intensive C) both A and B D) neither A nor B

A) wasteful of capacity

49) Which of the following is true? A) Guidelines must be followed. B) Guidelines must be considered. C) both A and B D) neither A nor B

B) Guidelines must be considered.

9) 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

B) Public Switched Telephone Network

56) SNMP ________ commands can change how managed devices operate. A) Get B) Set C) both A and B D) neither A nor B

B) Set

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

B) TCP

27) Overprovisioning means ________. A) assigning high priority to latency-intolerant applications while giving low priority to latency-tolerant applications B) adding much more switching and transmission line capacity than will be needed most of the time

B) adding much more switching and transmission line capacity than will be needed most of the time

23) 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

28) Priority is assigning high priority to ________ applications while giving low priority to ________ applications. A) latency-tolerant, latency-intolerant B) latency-intolerant, latency-tolerant

B) latency-intolerant, latency-tolerant

22) 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

13) 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)

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

B) minimum availability

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

B) minimum speed

55) SNMP Set commands can ________. A) ask agents for information about the managed device B) reroute traffic C) both A and B D) neither A nor B

B) reroute traffic

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

B) traps

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

B) worst case

54) In SNMP, the manager communicates directly with the managed device. A.) True B.) False

B.) False

7) 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

C) 1.25 Mbps

15) 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

24) 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

6) 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

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

C) metrics

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

C) service

1) 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

C) slower

61) 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

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

D) control

16) 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

31) Which of the following would receive the highest priority? A) video packets B) e-mail packets Which C) World Wide Web packets D) network management packets

D) network management packets

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

D) ping