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SWITCH (642-813): IP SLA Questions
Question 1
Which two items best describe a Cisco IOS IP SLA responder? (Choose two)
A. required at the destination to implement Cisco IOS IP SLA services
B. improves measurement accuracy
C. required for VoIP jitter measurements
D. provides security on Cisco IOS IP SLA messages via LEAP or EAP-FAST authentication
E. responds to one Cisco IOS IP SLA operation per port
F. stores the resulting test statistics
Answer: B C
Explanation
Cisco IOS IP Service Level Agreements (SLAs) allow users to monitor network performance between Cisco routers or from either a Cisco router to a remote IP device. Cisco IOS IP SLA has been the most popular way to measure performance statistics (ie: latency, jitter, packet loss, and MOS). Cisco IOS IP SLAs Responder is a component embedded in the destination Cisco router whose functionality is to respond to Cisco IOS IP SLAs request packets. The responder adds timestamps to the echoed packets to allow unidirectional packet loss, latency, and jitter measurements to a Cisco device. The accuracy of the measurements is improved significantly if the responder is used.
Question 2
Which two statements best describe Cisco IOS IP SLA? (Choose two)
A. only implemented between Cisco source and destination-capable devices
B. statistics provided by syslog, CLI, and SNMP
C. measures delay, jitter, packet loss, and voice quality
D. only monitors VoIP traffic flows
E. provides active monitoring
Answer: C E
Which two items best describe a Cisco IOS IP SLA responder? (Choose two)
A. required at the destination to implement Cisco IOS IP SLA services
B. improves measurement accuracy
C. required for VoIP jitter measurements
D. provides security on Cisco IOS IP SLA messages via LEAP or EAP-FAST authentication
E. responds to one Cisco IOS IP SLA operation per port
F. stores the resulting test statistics
Answer: B C
Explanation
Cisco IOS IP Service Level Agreements (SLAs) allow users to monitor network performance between Cisco routers or from either a Cisco router to a remote IP device. Cisco IOS IP SLA has been the most popular way to measure performance statistics (ie: latency, jitter, packet loss, and MOS). Cisco IOS IP SLAs Responder is a component embedded in the destination Cisco router whose functionality is to respond to Cisco IOS IP SLAs request packets. The responder adds timestamps to the echoed packets to allow unidirectional packet loss, latency, and jitter measurements to a Cisco device. The accuracy of the measurements is improved significantly if the responder is used.
Question 2
Which two statements best describe Cisco IOS IP SLA? (Choose two)
A. only implemented between Cisco source and destination-capable devices
B. statistics provided by syslog, CLI, and SNMP
C. measures delay, jitter, packet loss, and voice quality
D. only monitors VoIP traffic flows
E. provides active monitoring
Answer: C E