Which two scenarios would benefit the user the most by adding quality of service (QoS) to the network? (Choose two.)

Which two scenarios would benefit the user the most by adding quality of service (QoS) to the network? (Choose two.)

• Students are updating information about their sport activities on the class Facebook page.
• A student is sending emails to a friend.
• A student is communicating via Skype with a friend in another country.
• Students are watching a lecture from a YouTube site.

Explanation: Voice and video data need to be transmitted in a continuous stream. If packets are delayed, the audio and video quality will be poor, sometimes even not usable. QoS can give voice and video data high priority during the data transmission so that they would be sent first before other types of traffic, such as email, web surfing, and web page update.

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