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CHAPTERS 9-111.Be careful not to confuse availability with reliability. An available network, for example, does not drop many packets. However, a reliable network is up and operational. FALSE2. The availability of a network increases as the MTTRof the network devices decreases and as MTBFincreases. Therefore, selecting reliable networking devices that are quick to repair is crucial to a high-availability design.3. Which term is best described by the following definition? Both NICs are active at the same time, and they each have their own MAC address. Active-active4. Which of the following is a Cisco proprietary first-hop redundancy protocol? HSRP5. Quality of service (QoS) is a technology that allows a network design to strategically optimize network performance for select traffic types. This means, using QoS on a network device can identify which traffic types need to be sent first, how much bandwidth to allocate to various traffic types, which traffic types should be dropped first in the event of congestion, and how to make the most efficient use of the relatively limited bandwidth of an IP WAN. TRUEQuestion 6. What is the effective bandwidth in the WAN following diagram?256 kbps7. Which is not a category of QoS mechanisms? Mechanical-services8. Marking alters bits within a frame, cell, or packet to indicate how the network should treat that traffic. Marking alonedoes not change how the network treats a packet. TRUE9. VoIP sends packets using Real-time Transport Protocol (RTP), which is a Layer 4protocol.