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.)

According to ITIL® v3 framework, which two items should be investigated when responding to a
reported fault in order to expedite the resolution of an incident?

A customer calls the service desk and reports a reachability problem between two offices. The
service desk determines that the link that connects one of the offices to the edge router is down.
Which two steps should be taken before this incident is escalated to the carrier? (Choose two.)

A network operations engineer of company ABC is responsible for the operations and
maintenance aspects of the MPLS backbone. The MPLS backbone is built by using MPLScapable routers that are connected with Gigabit Ethernet and POS interfaces. A complaint was
received about the lack of connectivity between two sites of the end customer of the ABC
company. This customer relies on the availability of the MPLS label-switched path that is provided
by the backbone network of company ABC. The operations engineer quickly determined that the
MPLS label entries for certain prefixes provided by LDP were missing on one of the provider edge
routers that connected to the customer router. The operations engineer also determined that the
LDP session of the PE router was down with some of its neighbors in the backbone.
Which three of the following statements represent valid considerations for further troubleshooting?
(Choose three.)

After some troubleshooting, you realize that the performance degradation of your LAN is caused
by a unicast flood. The protocol analyzer shows that some ports are erroneously sending
excessive unicast packets to multiple destinations. What are three possible causes of a unicast
flood? (Choose three.)

You are working in a large service provider NOC as a Tier 2 NOC engineer. A ticket has been
escalated to you regarding an intermittent and apparently random problem with packet loss. The
network has multiple redundant paths on which IP traffic can flow. The service desk has performed
standard troubleshooting procedures but cannot isolate the problem.
Which two types of information should you gather before escalating to Tier 3? (Choose two.)

A rollout plan for a new version of Cisco IOS Software has been devised by the engineering team.
The plan calls for installing Cisco IOS Release 12.2(33)SRD on all Cisco 7600 Series Routers in
the network. During the plan review with operations, what concerns should you raise about this
plan? (Choose two.)