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IBM Certification Exams Interview Questions

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IBM DB2 DBA Certification Exam Interview Questions & Answers (12) Exam Mode | Learning Mode

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Which of the following describes an advantage that Linux on iSeries brings to an enterprise?

A Runs all Linux binaries unchanged
B Server consolidation with support for dynamic resource allocation
C Support for high capacity tape drives not otherwise available to Linux
D Provides dedicated, RAID-5 protected, disk drives from OS/400 controlled disk lOAs

0.3 Rating
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Which of the following is required for the DB2 optimizer to consider a hash join strategy?

A. Equijion predicates
B. Optimization level 1 or above
C. Registry variable DB_ANTIJOIN=YES
D. SORTHEAP large enough to contain the tables being joined

0.3 Rating
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Disk space for a table is allocated in one or more units called what?

A. tblspaces
B. extents
C. blobs
D. chunks
0.3 Rating
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Which of the following is defined on the dependent table to implement a referential constraint?
A.Primary key
B.Foreign key
C.Check constraint
D.Update trigger
0.3 Rating
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.A table called EMPLOYEE has the following columns: NAME DEPARTMENT PHONE_NUMBER
Which of the following will allow USER1 to modify the PHONE_NUMBER column?
A.GRANT INDEX (phone_number) ON TABLE employee TO user1
B.GRANT ALTER (phone_number) ON TABLE employee TO user1
C.GRANT UPDATE (phone_number) ON TABLE employee TO user1
D.GRANT REFERENCES (phone_number) ON TABLE employee TO user1
0.3 Rating
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What is database administration NOT concerned with?

A. indexing
B. creating tables
C. accessing data
D. application building
0.3 Rating
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To improve system redundancy using its grid architecture, where in the XIV System can a partition be mirrored?

A. on disks in other modules
B. on same disk in different modules
C. on different disks in the same module
D. on same disk, in same module, and in different modules
0.3 Rating
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Given the SQL statement: ALTER TABLE table1 ADD col2 INT WITH DEFAULT Which of the following is the result of the statement?
A.The statement fails because no default value is specified.
B.A new column called COL2 is added to TABLE1 which would have a null value if selected.
C.A new column called COL2 is added to TABLE1 which would have a value of zero if selected.
D.A new column called COL2 is added to TABLE1 which would require the default value to be set before working with the table.
0.3 Rating
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A unit of work is using an isolation level of Read Stability. An entire table is scanned twice within

the unit of work. Which of the following can be seen on the second scan of the table?
A.Rows removed by other processes
B.Rows added to a result set by other processes
C.Rows changed in a result set by other processes
D.Rows with uncommitted changes made by other processes
0.3 Rating
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An iSeries Linux partition has been created without a physical network card assigned. When
signed on to OS/400, users are able to use FTP and Telnet to the Linux partition. However, attempts to establish a terminal connection to Linux from their PCs fail. Which of the following is the most likely cause of the problem?

A Datagram forwarding was not enabled in OS/400 TCP/IP.
B The Linux configuration did not have proxy ARP enabled.
C The Linux Ethernet adapter was not enabled.
D The Linux feature code was not ordered.
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A System z customer has a new CIO. The CIO is concerned about continuing operations and recovery following a catastrophe.
Which of the following addresses this issue?

A. GDPS
B. TAM
C. DR
D. WAS

0.3 Rating
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The DBA can set the registry variable DB2_HASH_JOIN on or off because:
A. hash joins may require more resources to run.
B. hash joins are not used unless outer joins are requested.
C. If hash joins are enabled, no other join method can be used.
D. Hash joins are only needed when the tables are portioned using hash keys.
0.3 Rating
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Which of the following tools can be used to identify inefficient SQL statements without executing them?
A.QMF
B.Task Center
C.Visual Explain
D.Development Center
0.3 Rating
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Given these columns from the DEPARTMENT table: deptno CHAR(3) NOT NULL deptname CHAR(20) NOT NULL mgrno CHAR(6) admrdept CHAR(3) location CHAR(20) NOT NULL Which of the following will select the rows that do not have a value in the MGRNO column?
A.SELECT * FROM department WHERE mgrno = � B.SELECT * FROM department WHERE mgrno = NULL C.SELECT * FROM department WHERE mgrno IS NULL
D.SELECT * FROM department WHERE mgrno IS UNKNOWN
0.3 Rating
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A customer is attempting to determine what failed during the last boot sequence of the Linux
partition. Which of the following can be used to determine the error condition?

A /var/log/messages
B /proc/startup
C /usr/sbin/log
D /etc/boot
0.3 Rating
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Question: 8
What help ensure that the XIV System's cache does not become a bottleneck?

A. central cache locking mechanism
B. use of industry standard chip technology
C. each module is responsible for caching the data in that module
D. having all modules understand what is held cache at all times

Answer: C
0.3 Rating
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Which of the following commands will format a new disk drive partition in Linux on iSeries?

A mkts -e2 <path to device>
B mkfs.ext2 <path to device>
C mkfs -ext2 &It;path to device >
D mkfs format -e2 <path to device>
0.3 Rating
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Given the following table definition: STAFF id INTEGER name CHAR(20) dept INTEGER job
CHAR(20) years INTEGER salary DECIMAL(10,2) comm DECIMAL(10,2) Where the job column

contains job types: manager, clerk, and salesperson. Which of the following statements will return
the data with all managers together, all clerks together, and all salespeople together in the output?
A.SELECT * FROM staff ORDER BY job
B.SELECT job, name FROM staff GROUP BY name, job
C.SELECT * FROM staff GROUP BY name, job, id, dept, years, salary, comm
D.SELECT * FROM staff ORDER BY name, job, id, dept, years, salary, comm
0.3 Rating
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Which of the following can be kept in memory when the DB2 configuration parameter
KEEPFENCED is enabled?

A. SQLDAS after their cursor is closed. B. Referential integrity maps after a join.
C. Stored procedure processes after they are run.
D. Tables after they have been read into the buffer pool.
0.3 Rating
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Which of the following occurs if an application ends abnormally during an active unit of work?
A.The unit of work remains active
B.The unit of work is rolled back
C.The unit of work moves to CHECK_PENDING
D.The unit of work moves to pending state
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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
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