Business Data Networks and Security - Chapter 4 Exam Questions Answered Correctly Latest Update 2024 (Already Passed)

Business Data Networks and Security - Chapter 4 Exam Questions Answered Correctly Latest Update 2024 (Already Passed) Quality-of-service (QoS) metrics - Answers quantitative measures of network performance Rated speed - Answers the speed that should be provided based on vendor claims or on the standard that defines the technology Throughput - Answers the data transmission speed the network actually provides to users Aggregate throughput - Answers the total it provides to all users who share it in a part of a network Individual throughput - Answers what single users receive as their shares of the aggregate throughput. Always lower than agg. throughput Availability - Answers the percentage of time that the network is available for use Error rate - Answers the percentage of bits or packets that are lost or damaged during delivery Latency - Answers the amount of delay. Measured in milliseconds Milliseconds (ms) - Answers a thousandth of a second Jitter - Answers occurs when the latency between successive packets varies Service level agreements (SLAs) - Answers contracts that guarantee levels of performance for various metrics such as speed and availability SLA guarantees - Answers expressed as worst cases. Service will be no worse than a specific number Traffic analysis - Answers asks how much traffic must flow over each of the network's many individual transmission links Redundant transmission capacity - Answers the extra transmission capacity on links that is normally not needed but will be needed if another link fails Momentary traffic peaks - Answers traffic volume spike that typically only lasts a fraction of a second or a second or two but can be disruptive Buffers - Answers what switches and routers have that can hold frames or packets they cannot transmit because of the momentary congestion Overprovisioning - Answers installing so much more capacity than you normally need that momentary traffic peaks will be so rare and brief that they are ignored Priority level - Answers assigned to frames or packets based on their tolerance for latency and loss QoS guarantees - Answers company must allocate reserved capacity on each switch and transmission line Security - Answers primarily a management issue, not a technology issue Plan-protect-respond cycle - Answers Three phases of security management: 1. Plan 2. Protect 3. Respond Plan phase - Answers Part of PPR cycle. Companies asses the threat environment and decide how they will meet these threats Protect phase - Answers Part of PPR cycle. Companies provide actual protection on a day-to-day basis. Respond phase - Answers Part of PPR cycle. Company must respond when it suffers a successful security attack (known as a compromise, incident, or breach)