Certification Questions

Q:

What is Primary Key in DBMS?

Answer

A primary key is a special relational database table column or combination of columns designated to uniquely identify all table records. That is, A primary key is a column or set of columns in a table that uniquely identifies tuples (rows) in that table.


A primary key, also called a Primary Keyword.



Main Features Primary key are ::


It must contain a unique value for each row of data.


It cannot contain null values.

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10 2002
Q:

Which layer combines bits into bytes and bytes into frames, uses MAC addressing , and provides error detection?

Answer

The Data Link layer is responsible for the framing of data packets.

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Subject: CCNA

10 7740
Q:

What must happen if a DHCP IP conflict occurs?

A) Proxy ARP will fix the issue B) The client uses a gratuitous ARP to fix the issue
C) The administrator must fix the conflict by hand at the DHCP server D) The DHCP server will reassign new IP addresses to both computers
 
Answer & Explanation Answer: C) The administrator must fix the conflict by hand at the DHCP server

Explanation:

If a DHCP Conflict is detected, either by the server sending a ping and getting response or by a host using a gratuitous ARP (arp'ing for its own IP address and seeing if a host responds), then the server will hold that address and not use it again until it is fixed by an administrator.

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Filed Under: CCNA

9 13705
Q:

Who Creates The Project Charter?

A) Sponser B) Stake holder
C) Customer D) None
 
Answer & Explanation Answer: D) None

Explanation:

The project initiator or sponsor should be at a level that is appropriate to funding the project. They will either create the project charter or delegate that duty to the project manager.

Projects are authorized by someone external to the project such as a sponsor, PMO or portfolio steering committee.

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Filed Under: PMP Certification
Job Role: Analyst , Project Manager

9 2623
Q:

Which process ensures that the components of the computer are connected properly ?

A) Booting B) Saving
C) Processing D) Editing
 
Answer & Explanation Answer: A) Booting

Explanation:
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Filed Under: CCENT
Job Role: Analyst

9 1538
Q:

If a switch has three computers connected to it, with no VLANs present, how many broadcast and collision domains is the switch creating?

A) Three broadcast and one collision B) Three broadcast and three collision
C) one broadcast and three collision D) One broadcast and one collision
 
Answer & Explanation Answer: C) one broadcast and three collision

Explanation:

If a switch has three computersconnected to it, with no VLANs present , one broadcast and three collision domains are created.

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Filed Under: CCNA

9 17096
Q:

Which purchasing document(s) allow(s) only time-dependent Conditions?

A. Contract
B. Purchaseorder
C. Scheduling agreement
D. RFQ/Quotation

Answer

Answer : A


 


Explanation: Conditions in the purchase order are always  time-independent.Conditions in contracts, however, are always  time-dependent.For RFQs and scheduling agreements, you can control the time dependency with the document type.

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Subject: SAP MM

9 7928
Q:

Navigation structure of roadmanps consist of

A. work packages            B. tasks

C. accelerators                D.phases

E. activities

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9 2154