ServiceNow Discovery Implementation Certification UPDATED ACTUAL Exam Questions and CORRECT Answers
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ServiceNow Discovery Implementation
Institution
ServiceNow Discovery Implementation
ServiceNow Discovery Implementation
Certification UPDATED ACTUAL Exam
Questions and CORRECT Answers
What is the purpose of the CMDB? - CORRECT ANSWER- The purpose of the CMDB
is to capture and catalog assets, not just for record keeping but to provide a clear picture of
the service managem...
ServiceNow Discovery Implementation
Certification UPDATED ACTUAL Exam
Questions and CORRECT Answers
What is the purpose of the CMDB? - CORRECT ANSWER✔✔- The purpose of the CMDB
is to capture and catalog assets, not just for record keeping but to provide a clear picture of
the service management estate to more deeply understand it and to be able to support it better
What can the CMDB be thought of as? - CORRECT ANSWER✔✔- It can be thought of as a
database containing configuration items where the CI's are infrastructure components
(hardware and software) required to deliver a service.
What are the two key tables in the CMDB? - CORRECT ANSWER✔✔- cmdb_ci - the
configuration item table records generic attributes of all CIs
cmdb_rel_ci - the CI relationship table contains relationships between CIs
The information contained in these tables (among others) is used to create the dependency
view i.e a logical model showing how CIs are related.
If you change the cmdb_ci table the changes will propagate to all CIs (true/false) -
CORRECT ANSWER✔✔- True
What do you do to view the hierarchy of a ci type? - CORRECT ANSWER✔✔- Go to
Configuration>CI Class Manager then locate the ci type in the class hierarchy, on the related
links select Show Schema Map
Do all service management processes use the CMDB? - CORRECT ANSWER✔✔- Yes the
CMDB is not just a storage of information about organizational assets, its usage is more
important and virtually all service management processes use the CMDB in some way.
What does the CMDB provide for visibility? - CORRECT ANSWER✔✔- Simply put having
a CMDB provides increased visibility of the infrastructure, enabling:
,Key decision makers to quickly make accurate and informed decisions.
Support teams to investigate and resolve issues in a timely manner
How does the CMDB benefit the Incident Management process? - CORRECT
ANSWER✔✔- The ability to identify how faulty CIs affect upstream services means being
able to warn users of potential outages or reassure customers that work is currently in
progress; relating component information to quick fixes (the KEDB) can affect faster
workarounds.
How does the CMDB benefit the Problem Management process? - CORRECT
ANSWER✔✔- Able to perform root cause analysis on related items, narrowing down the
source of incidents and identify the faulty CI more quickly.
How does the CMDB benefit the Change Management process? - CORRECT ANSWER✔✔-
Understand change impact for more informed decision-making, identify upstream services
and CI's affected by a change so change schedules can minimize service disruption.
How does the CMDB benefit the Security Management process? - CORRECT
ANSWER✔✔- Identify assets and their business value to ascertain monitoring and control
requirements.
Most organizations do not fully understand their environment, which introduces risk levels.
What are some examples of these risks? - CORRECT ANSWER✔✔- -Support staff are not
informed when devices are moved.
-Technicians lack details of a new server added to the network.
-Software is installed on corporate equipment without proper official approval.
-Costs and fines associated with under or over-buying software licenses.
What is the main consideration when starting initial CMDB design? - CORRECT
ANSWER✔✔- Thought should be given to the process of CMDB Maintenance.
What is Discovery? - CORRECT ANSWER✔✔- ServiceNow Discovery (also known as
Infrastructure and Application discovery) interrogates the enterprise network for recognizable
devices and applications they host.
,How does Discovery access the network? - CORRECT ANSWER✔✔- Because ServiceNow
is normally hosted in a data center, instances lack the ability to access the enterprise networks
and sub nets directly, so must delegate the work to MID Servers placed inside the enterprise.
What is a MID Server - CORRECT ANSWER✔✔- A MID Server is a lightweight java
process running under a Linux or Windows platform that resides within the enterprise
networks.
Does a MID Server require dedicated hardware? - CORRECT ANSWER✔✔- A MID Servers
resource consumption is very low (and controllable) and therefore dedicated hardware is
usually not required.
What is a MID Servers sole function? - CORRECT ANSWER✔✔- The sole function of the
MID Server is to execute work requests and return the results to a ServiceNow instance for
processing. In effect a MID Server can be considered "a remote extension of the ServiceNow
instance on an enterprise network"
How are connections from the MID Server to ServiceNow initiated? - CORRECT
ANSWER✔✔- Connections are initiated from the Mid Server inside the enterprises firewall -
no inbound rules are required.
What type of connections does the MID Server user? - CORRECT ANSWER✔✔- All
communications use SOAP on HTTPS (port 443) meaning that all traffic is encrypted. and
usually no special firewall rules or VPNs are required.
Does Discovery require anything installed on the discover-able devices? - CORRECT
ANSWER✔✔- No, Discovery is agent-less and does not require additional tool sets installed
on any device.
What are some of the valid use cases for ServiceNow Discovery? - CORRECT
ANSWER✔✔- -Inventory
-Licensing
-CMDB population
-CI relationship mapping
, -Application dependency mapping
What does ECC stand for? - CORRECT ANSWER✔✔- External Communications Channel
What are the five steps involved in each phase of Discovery? - CORRECT ANSWER✔✔- 1)
Output probes on the ECC
2) MID Server polls the ECC queue for work.
3) MID Server interrogates enterprise infrastructure.
4) Response via input probes are returned to ECC (XML payload)
5) Sensors (discovery patterns) decipher the payload
NOTE: Review page 14
What does the MID Server check for on the ECC queue? - CORRECT ANSWER✔✔- The
monitor checks for entries with a value of output and a state of ready.
What are the four Discovery phases? - CORRECT ANSWER✔✔- 1) Port scan phase
2) Classification phase
3) Identification phase
4) Exploration phase
What happens in the Port Scan phase? - CORRECT ANSWER✔✔- When discovery is
initiated a single Shazzam probe is launched (placed on the ECC queue as an output probe),
scanning for open TCP ports ("Are you there") on network connectable nodes. An attempt is
made to determine device type based on activity know to exist on these ports ("How will I
classify you?"). Discovery makes certain assumptions about the devices, applications and
processes running on these ports and launches appropriate classify probes to find out more.
i.e "If you responded to WWI then I will classify you as a Windows device"
What port does UNIX based platforms usually use? - CORRECT ANSWER✔✔- Port 22 for
SSH
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