Post No 42 CLOUD COMPUTING

CLOUD COMPUTING 
1. What is Cloud Computing replacing?
A. Corporate data centers
B. Expensive personal computer hardware
C. Expensive software upgrades
D. All of the above
Ans:D
2. What is the number one concern about cloud computing?
A. Too expensive
B. Security concerns
C. Too many platforms
D. Accessability
ANS:B
3. Which of these companies is not a leader in cloud computing?
A. Google
B. Amazon
C. Blackboard
D. Microsoft
ANS:C
4. Google Docs is a type of cloud computing.
A. True
B. False
ANS:A
5. Which one of these is not a cloud computing pricing model?
A. Free
B. Pay Per Use
C. Subscription
D. Ladder
E. Perpetual License
ANS:D
6. Which of these is not a major type of cloud computing usage?
A. Hardware as a Service
B. Platform as a Service
C. Software as a Service
D. Infrastructure as a Service
ANS:A
7. An Internet connection is neccessary for cloud computing interaction.
A. True
B. False
ANS:A
8. Which is not a major cloud computing platform?
A. Google 101
B. IBM Deep blue
C. Microsoft Azure
D. Amazon EC2
ANS:B
9. “Cloud” in cloud computing represents what?
A. Wireless
B. Hard drives
C. People
D. Internet
ANS:D
10. Which of these should a company consider before implementing cloud computing technology?
A. Employee satisfaction
B. Potential cost reduction
C. Information sensitivity
D. All of the above
ANS:D
A. A way to organize desktop computers
B. Lightweight software that takes up little space on a hard drive
C. Computing resources that can be accessed on demand, like electricity from a utility
D. The World Wide Web
Ans: C
12. What widely used service is built on cloud-computing technology?
A. Twitter B. Skype
C. GmailD. YouTube
E. All of the above
Ans: E
13. Which of these techniques is vital for creating cloud-computing centers?
A. Virtualization
B. Transubstantiation
C. Cannibalization
D. Insubordination
Ans: A
14. An internal cloud is…
A. An overhanging threat
B. A career risk for a CIO
C. A cloud that sits behind a corporate firewall
D. The group of knowledge workers who use a social network for water-cooler gossip
Ans: C.
15. Match the provider with the cloud-based service.
A. Amazon1. Azure
B. IBM2. Elastic Compute Cloud
C. EMC3. Decho
D. Microsoft4. Cloudburst
ANS: A
16. Cloud computing embraces many concepts that were previously touted as the next big thing in
information technology. Which of these is not an antecedent of the cloud?
A. Software as a service
B. Utility computing
C. Remote hosted services
D. Grid computing
E. Desktop computing
Ans: E
17. IBM, EMC and Boeing Co. were among the companies signing what document whose title is reminiscent
of a famous political statement?
A. Declaration of Cloud Computing
B. The Rights of Cloud
C. Mein Cloud
D. Open Cloud Manifesto
Ans: D.
18. The term “cloud computing” is a metaphor that originated in what?
A. Graphical depiction of computer architectures
B. Meteorological symbolism
C. Worries about an unclear future for computing architectures
D. The idea that computer users trust in magic
Ans: A

19. Link the cloud-based service on the left with the desktop or server application it is designed to displace
on the right.
A. Google Docs1. Intel servers
B. Salesforce.com2. Microsoft Office
C. Mozy.com3. Oracle customer-relationship
management
D. Amazon EC24. Backup disk
Ans: A
20. What August event was widely seen as an example of the risky nature of cloud computing?
A. Spread of Conficker virus
B. Gmail outage for more than an hour
C. Theft of identities over the Internet
D. Power outages in the Midwest
Ans: B

Post No 41 CLOUD COMPUTING

Cloud computing

QUESTION 1
Amazon Web Services is which type of cloud computing distribution model?
Software as a service
Platform as a service
Infrastructure as a service
CORRECT ANSWER - Infrastructure as a service

QUESTION 2
What is private cloud?
A standard cloud service offered via the Internet
A cloud architecture maintained within an enterprise data center
A cloud service inaccessible to anyone but the cultural elite
CORRECT ANSWER  A cloud architecture maintained within an enterprise data center

QUESTION 3
What is the name of the Rackspace cloud service?
Cloud On-Demand
Cloud Servers
EC2


CORRECT ANSWER - Cloud Servers

QUESTION 4
Which Amazon cloud product recently experienced a massive outage?
SimpleDB
EBS
S3
CloudFront


CORRECT ANSWER - EBS

QUESTION 5
What is the name of the organization helping to foster security standards for cloud computing?
Cloud Security Standards Working
Cloud Security Alliance
Cloud Security WatchDog
Security in the Cloud Alliance


CORRECT ANSWER - Cloud Security Alliance

QUESTION 6
What is Cloud Foundry?
A factory that produces cloud components
VMware-led open source PaaS
An industry wide PaaS initiative
VMware-led closed source PaaS


CORRECT ANSWER - VMware-led open source PaaS

QUESTION 7
Which of the following isn't an advantage of cloud?
No worries about running out of storage
Easier to maintain a cloud network
Immediate access to computing resources
Paying only for what you use


CORRECT ANSWER - Easier to maintain a cloud network

QUESTION 8
Which company recently shut the doors on its cloud storage service?
Hitachi Data Systems
Savvis
Iron Mountain
Symantec


CORRECT ANSWER - Iron Mountain

QUESTION 9
Which of these services is not platform as a service?
Force.com
Microsoft Azure
Amazon EC2
Joyent


CORRECT ANSWER - Amazon EC2

QUESTION 10
What feature does not belong in a private cloud?
Metered billing
Self-service portal
Dial-home support
Rapid elasticity


CORRECT ANSWER - Dial-home support 

Post No 40 Cloud Computing

Cloud Computing 

1. _________ computing refers to applications and services that run on a distributed network using virtualized resources.
a) Distributed
b) Cloud
c) Soft
d) Parallel


Answer: b
Explanation: Cloud Computing applications are accessed by common Internet protocols and networking standards.
2. Point out the wrong statement :
a) The massive scale of cloud computing systems was enabled by the popularization of the Internet
b) Soft computing represents a real paradigm shift in the way in which systems are deployed
c) Cloud computing makes the long-held dream of utility computing possible with a pay-as-you-go, infinitely scalable, universally available system
d) All of the mentioned


Answer: b
Explanation: Cloud Computing is distinguished by the notion that resources are virtual and limitless and that details of the physical systems on which software runs are abstracted from the user.
3. ________ as a utility is a dream that dates from the beginning of the computing industry itself.
a) Model
b) Computing
c) Software
d) All of the mentioned


Answer: b
Explanation: Cloud computing takes the technology, services, and applications that are similar to those on the Internet and turns them into a self-service utility.
4. Which of the following is essential concept related to Cloud ?
a) Reliability
b) Productivity
c) Abstraction
d) All of the mentioned


Answer: c
Explanation: Cloud computing abstracts the details of system implementation from users and developers.
5. Point out the wrong statement :
a) All applications benefit from deployment in the cloud
b) With cloud computing, you can start very small and become big very fast
c) Cloud computing is revolutionary, even if the technology it is built on is evolutionary
d) None of the mentioned


Answer: a
Explanation: Issues with latency, transaction control, and in particular security and regulatory compliance are of particular concern.
6. Which of the following cloud concept is related to pooling and sharing of resources ?
a) Polymorphism
b) Abstraction
c) Virtualization
d) None of the mentioned


Answer: c
Explanation: Applications run on physical systems that aren’t specified, data is stored in locations that are unknown, administration of systems is outsourced to others, and access by users is ubiquitous.
7. ________ has many of the characteristics of what is now being called cloud computing.
a) Internet
b) Softwares
c) Web Service
d) All of the mentioned


Answer: a
Explanation: The Internet offers abstraction, runs using the same set of protocols and standards, and uses the same applications and operating systems.
8. Which of the following can be identified as cloud ?
a) Web Applications
b) Intranet
c) Hadoop
d) All of the mentioned


Answer: c
Explanation: When an intranet becomes large enough that a diagram no longer wishes to differentiate between individual physical systems, the intranet too becomes identified as a cloud.
9. Cloud computing is an abstraction based on the notion of pooling physical resources and presenting them as a ________ resource.
a) real
b) virtual
c) cloud
d) none of the mentioned


Answer: b
Explanation: Cloud Computing is a new model for provisioning resources, for staging applications, and for platform-independent user access to services.
10. Which of the following is Cloud Platform by Amazon ?
a) Azure
b) AWS
c) Cloudera
d) All of the mentioned


Answer: b
Explanation: One of the most successful cloud-based businesses is Amazon Web Services, which is an Infrastructure as a Service offering that lets you rent virtual computers on Amazon’s own infrastructure.

Post Id 39

1. The normal form which satisfies multivalued dependencies and which is in BCNF is
a) 4 NF
b) 3 NF
c) 2 NF
d) All of the mentioned


Answer: a
Explanation: Fourth normal form is more restrictive than BCNF.
2. Which of the following is a tuple-generating dependencies ?
a) Functional dependency
b) Equality-generating dependencies
c) Multivalued dependencies
d) Non-functional dependency


Answer: c
Explanation: Multivalued dependencies, do not rule out the existence of certain tuples. Instead, they require that other tuples of a certain form be present in the relation.
3. The main task carried out in the __________ is to remove repeating attributes to separate tables.
a) First Normal Form
b) Second Normal Form
c) Third Normal Form
d) Fourth Normal Form


Answer: a
Explanation: Multivalued dependencies, do not rule out the existence of certain tuples. Instead, they require that other tuples of a certain form be present in the relation.
4. Which of the normal form is based on multivalued dependencies ?
a) First
b) Second
c) Third
d) Fourth


Answer: d
Explanation: Multivalued dependencies, do not rule out the existence of certain tuples. Instead, they require that other tuples of a certain form be present in the relation.
5. Which forms has a relation that possesses data about an individual entity?
a) 2NF
b) 3NF
c) 4NF
d) 5NF


Answer: c
Explanation: A Table is in 4NF if and only if, for every one of its non-trivial multivalued dependencies X \twoheadrightarrow Y, X is a superkey—that is, X is either a candidate key or a superset thereof.
6. If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.
a) A many-to-many relationship set
b) A multivalued attribute of an entity set
c) A one-to-many relationship set
d) Both A many-to-many relationship set and A multivalued attribute of an entity set


Answer: d
Explanation: For a many-to-many relationship set each related entity set has its own schema and there is an additional schema for the relationship set. For a multivalued attribute, a separate schema is created consisting of that attribute and the primary key of the entity set.
7. Which of the following has each related entity set has its own schema and there is an additional schema for the relationship set?
a) A many-to-many relationship set
b) A multivalued attribute of an entity set
c) A one-to-many relationship set
d) None of the mentioned


Answer: a
Explanation: If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from this source.
8. In which of the following , a separate schema is created consisting of that attribute and the primary key of the entity set.
a) A many-to-many relationship set
b) A multivalued attribute of an entity set
c) A one-to-many relationship set
d) None of the mentioned


Answer: b
Explanation: If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from this source.
9. Fifth Normal form is concerned with
a) Functional dependency
b) Multivalued dependency
c) Join dependency
d) Domain-key


Answer: c
Explanation: If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from this source.
10. In 2NF
a) No functional dependencies (FDs) exist
b) No multivalued dependencies (MVDs) exist
c) No partial FDs exist
d) No partial MVDs exist


Answer: c
Explanation: If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from this source.

Post Id 38

1. DML is provided for
A) Description of logical structure of database

B) Addition of new structure in the database system.



C) Manipulation & processing of database

D) Definition of physical structure of database system

2.’AS’ clause is used in SQL for

A) Selection operation

B) Rename Operation

C) Join operation

D) Projection Operation

3. Count function in SQL returns the number of

A) values

B) distinct values

C) groups

D) columns

4. The statement in SQL which allows to change the definition of a table is

A) Alter

B) Update

C) Cteate

D) Select

5. Which of the following is correct.

A) A SQL query automatically eliminates duplicates

B) SQL permits attribute names to be repeated in the same relation

C) A SQL query will not work if there are no indexes on the relations

D) None of the above

6. Which of the following operation is used if we are interested in only certain columns of a table?

A) PROJECTION

B) SELECTION

C) UNION

D) JOIN

7. Which of the following is a legal expression in SQL?

A) SELECT NULL FROM EMPLOYEE;

B) SELECT NAME FROM EMPLOYEE;

C) SELECT NAME FROM EMPLOYEE WHERE SALARY=NULL;

D) None of the above

8. Which of the following is a valid SQL type?

A) CHARACTER

B) NUMERIC

C) FLOAT

D) All of the above

9. Which command is used to select distinct subject (SUB) from the table (BOOK)?

A) SELECT ALL FROM BOOK

B) SELECT DISTINCT SUB FROM BOOK

C) SELECT SUB FROM BOOK

D) All of the above

10. In SQL, which of the following is not a data definition language commands?

A) RENAME

B) REVOKE

C) GRANT

D) UPDATE


Answers:

1.
C) Manipulation & processing of database

2.
B) Rename Operation

3.
A) values


4.
A) Alter

5.

D) None of the above

6.
A) PROJECTION

7. 
B) SELECT NAME FROM EMPLOYEE;

8.
D) All of the above

9.
B) SELECT DISTINCT SUB FROM BOOK

10.
D) UPDATE 

Post Id 37

1. DML is provided for
A) Description of logical structure of database

B) Addition of new structure in the database system.



C) Manipulation & processing of database

D) Definition of physical structure of database system

2.’AS’ clause is used in SQL for

A) Selection operation

B) Rename Operation

C) Join operation

D) Projection Operation

3. Count function in SQL returns the number of

A) values

B) distinct values

C) groups

D) columns

4. The statement in SQL which allows to change the definition of a table is

A) Alter

B) Update

C) Cteate

D) Select

5. Which of the following is correct.

A) A SQL query automatically eliminates duplicates

B) SQL permits attribute names to be repeated in the same relation

C) A SQL query will not work if there are no indexes on the relations

D) None of the above

6. Which of the following operation is used if we are interested in only certain columns of a table?

A) PROJECTION

B) SELECTION

C) UNION

D) JOIN

7. Which of the following is a legal expression in SQL?

A) SELECT NULL FROM EMPLOYEE;

B) SELECT NAME FROM EMPLOYEE;

C) SELECT NAME FROM EMPLOYEE WHERE SALARY=NULL;

D) None of the above

8. Which of the following is a valid SQL type?

A) CHARACTER

B) NUMERIC

C) FLOAT

D) All of the above

9. Which command is used to select distinct subject (SUB) from the table (BOOK)?

A) SELECT ALL FROM BOOK

B) SELECT DISTINCT SUB FROM BOOK

C) SELECT SUB FROM BOOK

D) All of the above

10. In SQL, which of the following is not a data definition language commands?

A) RENAME

B) REVOKE

C) GRANT

D) UPDATE


Answers:

1.
C) Manipulation & processing of database

2.
B) Rename Operation

3.
A) values


4.
A) Alter

5.

D) None of the above

6.
A) PROJECTION

7.
B) SELECT NAME FROM EMPLOYEE;

8.
D) All of the above

9.
B) SELECT DISTINCT SUB FROM BOOK

10.
D) UPDATE 

Post No 36

1. A ………………… specifies the actions needed to remove the drawbacks in the current design of database.
A) 1 NF

B) 2 NF

C) 3 NF

D) Normal form

2. A relation is in ……………………… if an attribute of a composite key is dependent on an attribute of other composite key.

A) 2NF

B) 3NF

C) BCNF

D) 1NF

3. Fifth Normal form is concerned with

A) Functional dependency

B) Multivalued dependency

C) Join dependency

D) Domain key

4. A table is in the ………………….. if only candidate keys are the determinants.

A) functional dependency

B) transitive dependency

C) 4 NF

D) BCNF

5. In 2NF

A) No functional dependencies exist.

B) No multivalued dependencies exist.

C) No partial functional dependencies exist

D) No partial multivalued dependencies exist.


6. The normal form that is not necessarily dependency preserving is
A) 2NF

B) 3NF

C) BCNF

D) 4NF

7. The …………….. is related to the concept of multi-valued dependency.

A) fourth normal form

B) fifth normal form

C) boyce codd normal form

D) third normal form

8. Which normal form is considered adequate for normal relational database design?

A) 2NF

B) 5NF

C) 4NF

D) 3NF

9. Dependency preservation is not guaranteed in

A) BCNF

B) 3NF

C) 4NF

D) DKNF

10. A relation is ………………. if every field contains only atomic values that is, no lists or sets.

A) 1 NF

B) 2 NF

C) 3 NF

D) BCNF

Answers:
1.D) Normal form

2.B) 3NF

3.C) Join dependency

4.D) BCNF

5.C) No partial functional dependencies exist

6.A) 2NF

7.A) fourth normal form

8.D) 3NF

9.A) BCNF

10.A) 1 NF