Bandwidth Allocation

Correct Answer: Low Latency Queuing

Low Latency Queuing (LLQ) is the most suitable for remote video conference calls in an organization's network with the need for minimum delay. This is because LLQ provides a strict priority queuing mechanism, prioritizing delay-sensitive data such as real-time video conferencing. This ensures the best user experience by minimizing delays. Conversely, 'First-In, First-Out' is a basic queuing method and doesn't prioritize video traffic, leading to potential delays. 'Weighted Fair Queuing' provides fair bandwidth distribution among higher and lower priority traffic but doesn't focus specifically on reducing delay. Lastly, 'Priority Queuing' does prioritize certain traffic but doesn't necessarily guarantee low latency.

Correct Answer: Weighted Fair Queuing

The best method to allocate bandwidth fairly among various departments where different types of applications and multimedia content are used is Weighted Fair Queuing. This method provides a balanced and prioritized distribution based on weights to 'fairly' allocate bandwidth. This corresponds to the complex applications and multimedia content used by the businesses and marketing department. Under this method, these complex applications will not hog all the bandwidth, allowing other department's applications to function properly as well. The other choices are not as ideal: First-In, First-Out does not take into consideration the complexity of the applications and may lead to bottleneck issues, Low Latency Queuing is more appropriate for prioritizing delay-sensitive traffic such as voice or video applications, and Priority Queuing could cause lower-priority traffic to be dropped or delayed if network congestion occurs, which might not be fair to other departments.

Correct Answer: Class-Based Weighted Fair Queuing

To prioritize VoIP traffic and allocate a sufficient amount of bandwidth, a network administrator should use the approach of Class-Based Weighted Fair Queuing (CBWFQ). This method allows for the careful allocation and regulation of network resources based on specific criteria or 'class'. It ensures each class (in this case, VoIP traffic) receives the necessary resources without monopolizing the network. Other methods, like 'First-In, First-Out', don't always guarantee priority to sensitive traffic like VoIP. 'Strict Priority Queuing' can lead to monopolization of bandwidth by prioritized traffic, making it less fair. Lastly, 'Low Latency Queuing' prioritizes delay-sensitive traffic, but it doesn't provide the same level of fine control and balanced allocation as CBWFQ.