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 anenvironment 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