ENSA 9.1 -- Network Transmission Quality

What happens when the volume of traffic exceeds the network's capacity to transport it?

• Packets are immediately transmitted without delay.

• Devices queue the packets in memory until resources are available.

• Packets are automatically rerouted to another network.

• Devices on the network shut down temporarily.

What is the consequence of queuing packets in a network device?

• Packets are transmitted faster.

• There is no impact on packet transmission.

• It causes a delay because new packets have to wait.

• Packets are lost immediately.

What happens if the number of packets to be queued continues to increase?

• The device's memory fills up and packets are dropped.

• The device automatically expands its memory.

• Packets are stored indefinitely.

• The network speed increases.

Which Quality of Service (QoS) technique can help manage network congestion?

• Increasing the bandwidth.

• Classifying data into multiple queues.

• Reducing the number of devices on the network.

• Using a single queue for all data.

What is the default behavior of packet processing without any QoS mechanisms?

• Packets are processed based on their size.

• Packets are processed in the order in which they are received.

• Packets are processed based on their destination mac address.

• Packets are processed randomly.

What protocol is used for Voice over IP (VoIP) digital audio streams?

• HTTP

• FTP

• RTP

• SMTP

What mechanism compensates for jitter in VoIP audio streams?

• Packet prioritization

• Playout delay buffer

• Bandwidth allocation

• Data compression

What happens when jitter exceeds what the DSP can handle in VoIP?

• The call quality improves.

• Audio problems are heard.

• The call is automatically terminated.

• The DSP increases its capacity.

What is the role of the playout delay buffer in a network?

• It increases the speed of packet transmission.

• It compensates for jitter in audio streams.

• It reduces the size of packets.

• It stores packets indefinitely.

The amount of time . . .

• to compress data

• Packetization delay

• it takes to transmit a frame on the wire

• Propagation delay

• it takes to encapsulate a packet

• Queuing delay

• it takes for the frame to travel

• Code delay

• a frame waits to be transmitted

• Serialization delay