Top 100+ Cmdb Interview Questions And Answers
Question 1. What Are The Citizen Cmdb And Core Cmdb? You Do Not Mention These Here, But Many Others Do?
The Citizen and Core CMDBs are relics of the monolithic model of the CMDB. The premise is that the center CMDB is the “master” CMDB that holds the unified expanse of all facts. The Citizen CMDB “feeds” statistics into the Core. It implies, in most cases, a two-tier hierarchy. We already mentioned that a true CMS will be a couple of stages, built upon a sequence of Management Data Repositories and liberal use of relationships. You can view the Citizen as the MDR on the lower level of a hyperlink inside the chain and the Core as the better degree of that same link. As you traverse the chain, Cores end up Citizens at the following higher hyperlink, and the inverse is genuine as you circulate decrease.
Question 2. Why Did The Early Asset Databases Fail To Deliver The Promise Of The Cmdb?
There are important reasons, among others. First, the asset databases did no longer generally incorporate relationships rich enough to help the navigation of dependencies among property and the offerings they aid. Second, the data itself become difficult to populate and consequently erroneous.
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Question 3. The Cmdb Appears To Be Very Similar To A Data Warehouse. Can We Use A Data Warehouse As A Cmdb?
Technically, the CMDB is comparable in many philosophical ways to a statistics warehouse. Where they differ is inside the real shipping of the era and how the complete system of facts is used within an ITIL-based employer. As a CMS with federation, the components (the MDRs) are connected in a different way than a information warehouse, and the equipment that produce and devour the records are aligning with the CMS course. It is truly manageable—and certainly anticipated—that information warehouses will play some function in the CMS, just as conventional relational databases will. The standard system that brings all of those parts together is the CMS.
Question four. I Would Love To Include My Applications In My Cmdb, But It Is Too Difficult. How Can I Do This?
The majority of CMDB efforts are now aimed at infrastructure. Applications are certainly extra hard because of the shortage of instrumentation to inform us the real structure of the applications.
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Question five. How Can You Advocate Extending The Cmdb To Such High-degree Concepts As Business Processes, Documents, And The Human Element When We Are Still Struggling With The Basic Infrastructure? Isn’t This An Overly Aggressive “boil The Ocean” Approach That Is Bound To Fail?
A “massive bang” strive at a CMDB/CMS is almost assured to fail. Like another ambitious adventure, you're making progress one step at a time. We do suggest building the better layers of abstraction, but infrastructure is a necessary basis that helps these higher layers. Get the lower tiers to an inexpensive kingdom of maturity earlier than moving “up the stack,” and your journey might be simpler. A developing wide variety of businesses are actually in a position to make this pass, as their infrastructure layer is in a more succesful nation.
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Question 6. I Have Implemented A Cmdb, But My People Spend Too Much Time Populating And Reconciling The Data. The Overhead Is Diminishing The Value Of The Cmdb So Much That Many Intended Beneficiaries Are Revolting. How Can I Minimize This Work And Save The Cmdb Effort?
Automation is the important thing to simplifying ongoing CMDB/CMS protection, including preliminary mapping and ongoing population updates. The category of automation products is discovery tools. A CMS with out discovery is doomed, so it is sensible to put into effect discovery as quickly as you can.
Question 7. You Imply That Itil V3 Is The End Of The Cmdb, But It Too References A Cmdb. What Is The Truth Here?
The ITIL v3 Service Transition e-book, the CMS diagram consists of an “Integrated CMDB” and Physical CMDBs within the blend of components. Note that the diagram is just an example of a CMS, not a definitive description. Also observe that this segment of the ebook on Service Asset and Configuration Management (SACM) is as a substitute indistinct on CMDB. This is intentional, as the ITIL v3 authors proportion our critical view of the CMDB time period. They communicate substantially approximately CIs and their interrelationships, which is all top. The ambiguity about CMDB is likewise correct as it marks the start of the quit of the CMDB, no longer the instant dying of the time period. We retain to predict that the cease is coming, however it will take a while. The CMDB quantities of the CMS diagram can be extra successfully represented within the view taken through the CMDB Working Group. Both CMDB and ITIL v3 were evolved simultaneously and a chunk remoted from each other.
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Question eight. Cmdb_ci_server Inherits Which Class?
CMDB is a desk which stores all of the CIs of specific community. Cmdb_ci is a core table & all of the CIs are stored in one-of-a-kind tables as in keeping with the class. Cmdb_ci_server ia a class of CI which inherit Cmdb_ci_computer elegance.
Question 9. What Is There Stored In Cmdb?
All the Measurable tangible and intangible data of a CI are saved in CMDB table. All the itil technique records concerning configuration objects.
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Question 10. What Is Difference Between Asset & Ci?
Asset is tangible or intangible device which aren't involved in logical network, while CIs are tangible or intangible tool which are concerned in logical network.
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Question eleven. What Is The Use Of Bsm In Service Now?
A Business Service Management (BSM) map graphically displays the configuration objects (CI) that help a enterprise carrier and suggests the fame of those configurations.
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Question 12. What Data Is Not Stored In Update Set?
Update set most effective captures the customization, it does no longer capture any records consisting of new organizations, new CIs, new user.
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Question thirteen. Which Table Are The Core Tables Of Service Now?
cmdb_ci & assignment are the 2 center tables of Service NOW. All other OOB tables increase to these center tables.
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Question 14. In How Many Ways Can You Update Cmdb?
CMDB stores all CIs of the network, either they may be manually added by going to CMDB module & including information one after the other OR you may allow Discovery in you instance. Discovery automatically discovers the devices for your community & populates them in carrier now cmdb desk.