ICND2 – IP SLA Questions
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Question 1
[am4show have=’p2;’]Which statement about the IP SLAs ICMP Echo operation is true?
A. The frequency of the operation specified in milliseconds.
B. It is used to identify the best source interface from which to send traffic.
C. It is configured in enable mode.
D. It is used to determine the frequency of ICMP packets.
Answer: D[/am4show]
Explanation
The ICMP Echo operation measures end-to-end response time between a Cisco router and any devices using IP. Response time is computed by measuring the time taken between sending an ICMP Echo request message to the destination and receiving an ICMP Echo reply. Many customers use IP SLAs ICMP-based operations, in-house ping testing, or ping-based dedicated probes for response time measurements.
Question 2
[am4show have=’p2;’]Which statement about the IP SLAs ICMP Echo operation is true?
A. It is configured in enable mode.
B. It is used to determine the one-way delay between devices
C. It is used to identify the best source interface from which to send traffic to a destination.
D. The frequency of the operation is specified in milliseconds.
Answer: B[/am4show]
for Q2:
An IP LSA ICMP-Echo operation can measure 2 facts:
1. success/failure of the Echo
2. the RTT
RTT(round trip time) measures the DELAY from sending the ICMP Echo request until receiving the matching ICMP Echo reply.
that’s all. only two questions
What IP SLA ICMP Echo measures?
A. Packet loss
B. Congestion
C. Hop-by-hop “something”
Dumps says a
QUESTION 628
Which function does IP SLA ICMP ECHO operation perform to assist with troubleshooting?
A. one way jitter measurement
B. packet-loss detection
C. hop-by-hop response time
D. congestion detection
dumps says c
Cisco says: An ICMP Path Echo operation measures end-to-end and hop-by-hop response time between a Cisco device and other devices using IP
Is the answer in first question wrong?
Question 2, Answer is not B because:
Cisco clearly states that:
ICMP Echo –> Measures round-trip delay for the full path.
Soure: https://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_sla/configuration/guide/hsla_c/hsoverv.html
One side Delay = RRT/2
About question:
Which function does IP SLA ICMP ECHO operation perform to assist with troubleshooting?
A. one way jitter measurement
B. packet-loss detection
C. hop-by-hop response time
D. congestion detection
You can find info that:
The IP SLA ICMP Echo operation provides the following measurements:
Availability monitoring (packet loss statistics)
Performance monitoring (latency and response time)
Network operation (end-to-end connectivity)
I would go for B.
Second of all if you take a look at a picture from:
https :**www.cisco.com*c*en*us*td*docs*ios-xml*ios*ipsla*configuration*xe-3s*sla-xe-3s-book*sla_icmp_echo.pdf
You see that this is end to end, not hop by hop.
the answer is udp echo and icmp echo
q7 is correct ? in the china dump said E. ICMP echo and F. UDP echo
UDP Echo Operation
The UDP echo operation measures end-to-end response time between a Cisco device and devices using IP. UDP is a transport layer (Layer 4) Internet protocol that is used for many IP services. UDP echo is used to measure response times and test end-to-end connectivity.
E,F
Which function of the IP SLAs ICMP jitter operation can you use to determine whether a VoIP issue is caused by excessive end-to-end time?
A. round-trip time latency
B. packet loss
C. jitter
D. successive packet loss
Answer: A
Question 2
Which statement about the IP SLAs ICMP Echo operation is true?
A. The frequency of the operation specified in milliseconds.
B. It is used to identify the best source interface from which to send traffic.
C. It is configured in enable mode.
D. It is used to determine the frequency of ICMP packets.
Answer: D
Explanation
The ICMP Echo operation measures end-to-end response time between a Cisco router and any devices using IP. Response time is computed by measuring the time taken between sending an ICMP Echo request message to the destination and receiving an ICMP Echo reply. Many customers use IP SLAs ICMP-based operations, in-house ping testing, or ping-based dedicated probes for response time measurements.
What IP SLA ICMP Echo measures?
A. Packet loss
B. Congestion
C. Hop-by-hop “something”
D. End-to-end response time
Answer: D
Explanation
The Internet Control Message Protocol (ICMP) Echo operation measures the end-to-end response time between two devices that use IPv4. The response time is computed by measuring the time taken between sending an ICMP Echo request message to the destination and receiving an ICMP Echo reply.
An IP SLA can be used to performs network performance monitoring, including measure the latency, packet loss, jitter and response time in the network. The example below shows how to configure an IP SLA ICMP Echo (send an ICMP request to 192.168.1.254 every 300 second with a timeout of 500ms):
Device(config)#ip sla 1
Device(config-ip-sla)#icmp-echo 192.168.1.254
Device(config-ip-sla-echo)#frequency 300 //send an ICMP
Device(config-ip-sla-echo)#timeout 500
Device(config-ip-sla-echo)#exit
Device(config)#ip sla schedule 1 start-time now
Question 4
Which function does IP SLA ICMP ECHO operation perform to assist with troubleshooting?
A. one way jitter measurement
B. congestion detection
C. hop-by-hop response time
D. packet-loss detection
Answer: C
9tut
please whats going on ??
both q 1 and q2 are the same while the answers are different ??????????????
Q-666
Which two IP SLA operations can you use to measure the end-to-end response time for all IP traffic between a Cisco router and an end device ?(choose two)
1. UDP jitter
2. ICMP path jitter
3. TCP connect
4. ICMP path echo
5. ICMP echo
6. UDP echo
The dump says answers 5 and 6. But I think the question or the answer may be wrong because UDP echo is a part of “all IP traffic” but is not “all”.
Does ICMP echo include UDP traffic?