A network administrator is monitoring a server that runs both a web service and a DNS resolver. The web service uses TCP, and the DNS resolver uses UDP. The administrator notices that the DNS resolver occasionally receives responses out of order, but the web service never does. What explains this difference?

The web service uses a different network path

UDP does not guarantee ordering, while TCP does

TCP is faster than UDP, so it avoids out-of-order delivery

The DNS resolver is misconfigured

A company is deploying a new application that requires both reliable file transfer and real-time voice communication. The network team is considering using a single transport protocol for both features. What is the best approach?

Use UDP for both, because it is low-overhead and fast for both features.

Use TCP for both, because it provides reliable delivery for file transfer and voice.

Use TCP for file transfer and UDP for voice communication.

Use UDP for file transfer and TCP for voice communication.

A company is deploying a new live streaming service that must deliver video to thousands of viewers. The service uses UDP for video delivery, but some viewers experience choppy playback. The network team is considering adding a reliability layer on top of UDP. What is the most important trade-off to consider?

Adding reliability will increase latency, which may degrade the live streaming experience.

Adding reliability will eliminate all packet loss, ensuring perfect video quality.

Adding reliability will reduce bandwidth usage, improving video quality.

Adding reliability will make the service use TCP, which is more efficient for streaming.

CiscoCertified Network Associate (CCNA)

Domain 1Objective 5

1.5 Compare TCP to UDP 200-301 Practice Questions (Page 5)

Part of the Network Fundamentals domain, which accounts for 20% of the 200-301 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–1 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

4concepts

20%of the exam

Questions 21–25

21expert · hard
A network administrator is monitoring a server that runs both a web service and a DNS resolver. The web service uses TCP, and the DNS resolver uses UDP. The administrator notices that the DNS resolver occasionally receives responses out of order, but the web service never does. What explains this difference?
Select an answer first
22application · medium
A network administrator is troubleshooting a slow file transfer between two servers. The transfer uses TCP, and the administrator notices that the receiver's buffer is frequently full, causing the sender to pause. Which TCP mechanism is causing this behavior?
Select an answer first
23expert · hard
A company is deploying a new application that requires both reliable file transfer and real-time voice communication. The network team is considering using a single transport protocol for both features. What is the best approach?
Select an answer first
24expert · hard
A company is deploying a new live streaming service that must deliver video to thousands of viewers. The service uses UDP for video delivery, but some viewers experience choppy playback. The network team is considering adding a reliability layer on top of UDP. What is the most important trade-off to consider?
Select an answer first
25foundation · easy
Which application is best suited to use UDP rather than TCP?
Select an answer first

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1.5 Compare TCP to UDP 200-301 Practice Questions (Page 5)

Questions 21–25

A network administrator is troubleshooting a slow file transfer between two servers. The transfer uses TCP, and the administrator notices that the receiver's buffer is frequently full, causing the sender to pause. Which TCP mechanism is causing this behavior?

A company is deploying a new application that requires both reliable file transfer and real-time voice communication. The network team is considering using a single transport protocol for both features. What is the best approach?

Which application is best suited to use UDP rather than TCP?

Keep studying — Network Fundamentals