Why are thresholds defined based on baseline documents?

What is the main difference between an SNMP trap and a syslog message?

Why do event management systems use device-generated events (that is, TRAP, syslog) instead
of poll-based?

Performance and accounting management are similar because both are interested in collecting
usage data from the network. How do they differ?

A new polling application was installed last week. This application monitors some of the routing
characteristics on your edge and aggregation devices. Since that time, you have been receiving
CPU threshold utlization alerts between 1 and 4 a.m. every day from multiple edge and
aggregation devices. What is the most likely cause of CPU spikes, in light of the specified changes
and assuming that no other changes happened in the network?

An ISP operates a network that provides VPN service to enterprise customers. The customer uses
an MPLS network that is designed with redundant equal cost paths in the core. An enterprise
customer reported an increased latency and drop rate for some traffic flows from site A to site B.
The enterprise customer is connected to PE-A at site A and PE-B at site B.
If the latency problem is caused by a congested link in the core along a path from site A to site B,
which of the following statements is correct?

What is the most effective tool to use to determine whether there is a physical layer problem with
voice bearer trunks before escalating the trouble to the PSTN PTT carrier?

You are working in a service provider voice NOC supporting a national VoIP network. The network
underwent a capacity expansion that added voice bearer trunks to a newly deployed media
gateway. After the new trunks were configured and placed into live service, the service desk
began to receive complaints from end customers that their VoIP service is not working for certain
calls. The service desk is unable to resolve the problem and due to increasing troubles coming in,
they escalate to you.
Assuming that all physical layer option settings are verified to match carrier-provided
specifications, which action should you take to isolate the problem before escalating to the PSTN
PTT carrier?

A rollout plan from engineering has been sent to the NOC for deployment. Part of the plan involves
a complex software upgrade to a network element. The method of procedure provided by
engineering is nearly 100 individual steps long. Where do you expect to find backout procedures
to be specified?

A rollout plan from engineering has been sent to the NOC for review. The plan approves
deployment of a new router model at the customer premises for all new service activations. The
certification lab has fully tested the new router and found no issues. As a NOC engineer, you
review the plan for completeness. An item is missing from the plan to deploy the new routers.
Which missing item should be your biggest concern?