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Cisco 642-770 Exam Syllabus Topics:

Cisco Operational Foundations for Cisco Service Provider Core Networks Sample Questions:

1. What are the three most important concepts to remember about successful troubleshooting? (Choose three.)

A) Network engineers that are effective troubleshooters succeed because of their ability to use diagnostic systems and software.
B) The most successful troubleshooters develop a process, use it consistently, and constantly improve its effectiveness.
C) The network system you are troubleshooting must be well defined with knowledge and documentation.
D) The best troubleshooters are born with a "gut" feel for solving problems.
E) Divide and conquer. Do not try to fix it, but narrow it down to its root cause.

2. What does this UNIX or Linux command provide?
for file in `find . -name '*.txt'`; do perl -i -pe 's|foo|bar|g' $file; done

A) a string search for the words "foo" and "bar"
B) a string search for the words "foo" or "bar"
C) a list of all text files with the words "foo" or "bar" in them
D) a string replacement of the word "foo" to the word "bar"

3. Which management process flow includes these elements?
-perform planned or unplanned upgrades
-install or configure network devices
-execute NRFU or operational validation tests
-
set QOS policies and mechanisms

A) incident management
B) performance management
C) change management
D) configuration management

4. Two of the core routers are not able to establish routing protocol adjacency with each other. To best effectively troubleshoot this issue, which four things should be verified? (Choose four.)

A) The routers interface link that provides connectivity between the two routers is in the UP state.
B) The MPLS (LDP) adjacency is up between the two routers.
C) The routing protocol configurations on each router match (such as routing protocol timers and routing protocol authentication).
D) NTP is configured on both routers and the clocks are synchronized between the two routers.
E) The two routers can ping each other.
F) If a firewall exists in the path between the two routers, it is properly configured.

5. Which two-stage configuration process is correct in Cisco IOS XR Software?

A) Make configuration changes, then enter "copy run start" to make configuration changes persist.
B) Enter configuration mode, then make configuration changes.
C) Make configuration changes, then enter "commit" to make configuration changes persist.
D) Enter admin mode, then make configuration changes.

Solutions: