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
Explanation:
Cisco IOS IP SLAs allows you to montior, analyze and verify IP service levels for IP applications
and services, to increase productivity, to lower operational costs, and to reduce occurances of
network congestion or outages. IP SLAs uses active traffic monitoring for measuring network
performance. IP SLAs can be configured to react to certain measured network conditions. For
example, if IP SLAs measures too much jitter on a connection, IP SLAs can generate a notification
to a network management application, or trigger another IP SLAs operation to gather more data.
IP SLAs includes the capability for triggering SNMP notifications based on defined thresholds. This
allows for proactive monitoring in an environment where IT departments can be alerted to potential
network problems, rather than having to manually examine data. IP SLAs supports threshold
monitoring for performance parameters such as average jitter, unidirectional latency and
bidirectional round trip time and connectivity. This proactive monitoring capability provides options
for configuring reaction thresholds for important VoIP related parameters including unidirectional
jitter, unidirectional packet loss, and unidirectional VoIP voice quality scoring (MOS scores). For
packet loss and jitter, notifications can be generated for violations in either direction (source to
destination and destination to source) or for round trip values. Packet loss, jitter and MOS
statistics are specific to IP SLAs Jitter operations. Notifications can also be triggered for other
events, such as round-trip-time violations, for most IP SLAs monitoring operations.
Reference:
http://www.cisco.com/en/US/docs/ios/12_4/ip_sla/configuration/guide/hsoverv.html