While evaluating a new hardware rollout plan before deployment, which standards should you
review to ensure that the hardware met certain environmental design guidelines?

On the Cisco IOS XR router, you have noticed lately that OSPF adjacency on one interface is
flapping occasionally; three flaps in the last 5 hours. The log in each of the three flap cases has an
error message showing that the OSPF state changed from EXCHANGE to DOWN with the
description “Neighbor Down: dead timer expired.” What is the most likely cause for this problem?

Which three of the following metrics are used to troubleshoot an incident of poor voice quality in a
service provider next-generation network? It can be assumed that adequate bandwidth is
available. (Choose three.)

A server is exhibiting intermittent performance problems. If you were to search various system
logs, which three patterns would likely apply when using the grep command? (Choose three.)

Your company provides a VoIP service. Customers are informing your call center that they are not

getting a dial tone. You are able to establish a Telnet session into the primary call manager across
the network. From the primary call manager, you are unable to ping the CPE. You are able to ping
the CPE from the secondary call manager.
After failing over to the secondary call manager, which three items should you focus on to resolve
this performance problem? (Choose three.)

An ISP has a BGP-free MPLS LDP core. The ISP provides L2VPN and L3VPN services over the
MPLS core. The ISP network monitoring tools show that whenever a new link or a link that was
taken out for maintenance is brought up, it causes a traffic outage lasting for a few seconds for
VPN and Internet traffic. What are the first two steps to mitigate this problem? (Choose two.)

You are employed within a NOC at a regional service provider as a Tier 3 NOC engineer. The
network that you support comprises leased facilities from a much larger international service
provider. Your customer reports a reachability problem between two offices. The service desk
performs its standard troubleshooting procedures without success and has escalated the incident

to you. After 45 minutes of continued troubleshooting, you are unable to resolve the connectivity
problem.
To which two areas should you next escalate the incident? (Choose two.)

You are responsible for the network of a content provider. The content provider uses ISP-A and
ISP-B for Internet transit service for the purpose of redundancy and load balancing. The content
provider has one address range assigned to it. Which two of the following techniques are more
effective to achieve load balancing and redundancy for inbound traffic? (Choose two.)

You are working at a service provider NOC as a Tier 2 NOC engineer. The service desk has
escalated a trouble ticket to you. The customer complaint on that ticket states that there is no
network reachability between two branch offices. After reviewing the ticket, you begin
troubleshooting but soon realize that you are unable to resolve the incident yourself. Which two
factors should you consider before escalating this to the next level of support? (Choose two.)

You are working at a service provider NOC and have received a call from a customer who is
complaining about slow network throughput between several branch offices. After following normal
processes, you are unable to resolve the problem and must decide whether or not to escalate to
the next level of support. Which two pieces of information should you gather to describe the slow
throughput problem before escalating to the next level of support? (Choose two.)