Table of Contents
Question
Which App Response Time metric is the measure of network latency?
A. Round Trip Time (RTT)
B. Server Response Time (SRT)
C. Network Transfer Time (NTTn)
D. UDP Response Time (UDP-TRT)
Answer
A. Round Trip Time (RTT)
Explanation
The correct answer is A. Round Trip Time (RTT).
Round Trip Time (RTT) is the measure of network latency. It is the time taken for a packet to travel from the source to the destination and back again. RTT is commonly used to assess the responsiveness and performance of a network connection.
Let’s elaborate on each App Response Time metric and why Round Trip Time (RTT) is the measure of network latency:
A. Round Trip Time (RTT):
RTT measures the time it takes for a packet to travel from the sender to the receiver and back to the sender. It includes the time it takes for the packet to be transmitted over the network to the destination and the time it takes for the acknowledgment packet to return to the source. RTT is typically measured in milliseconds (ms).
RTT is a critical metric in networking because it directly reflects the latency or delay experienced by data packets as they traverse the network. High RTT values indicate higher latency, which can lead to longer response times and delays in data transmission.
B. Server Response Time (SRT):
Server Response Time (SRT) is the time taken by the server to process a client request and generate a response. SRT is a measure of how quickly the server processes the request and sends back the response to the client. It is mainly used to assess the server’s performance and its impact on application responsiveness.
C. Network Transfer Time (NTTn):
Network Transfer Time (NTTn) is the time it takes for a data packet to be transferred over the network from the source to the destination. It does not include the time for the acknowledgment packet to return, which is an essential part of measuring RTT.
D. UDP Response Time (UDP-TRT):
UDP Response Time (UDP-TRT) is a metric used for User Datagram Protocol (UDP) traffic. UDP is a connectionless protocol that does not establish a connection before transmitting data, unlike Transmission Control Protocol (TCP). Therefore, UDP-TRT is not the measure of network latency and response time in the same sense as RTT, which is more commonly used for TCP traffic.
In summary, Round Trip Time (RTT) is the measure of network latency and is calculated as the time taken for a packet to travel from the sender to the receiver and back to the sender. RTT reflects the delay experienced by packets as they traverse the network, making it a critical metric for assessing network performance and responsiveness.
Reference
- Application Experience: Application Performance Metrics (paloaltonetworks.com)
- Application Experience: Network Performance Metrics (paloaltonetworks.com)
- Metrics Usage (paloaltonetworks.com)
- 19 Network Metrics: How to Measure Network Performance – Obkio
- 5 Types of Response Time Metrics and How To Measure It | Indeed.com
- Understanding latency – Web performance | MDN (mozilla.org)
- Using netperf and ping to measure network latency | Google Cloud Blog
- Latency, Bandwidth, Throughput and Response Time | Example | (perfmatrix.com)
Palo Alto Networks System Engineer Professional PSE-SASE certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Palo Alto Networks System Engineer Professional PSE-SASE exam and earn Palo Alto Networks System Engineer Professional PSE-SASE certification.