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