Database Administration Questions


Q:

I jump when i walk and sit when i stand, who am I?

Answer

Kangaroo.

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Q:

What does a VLAN do?

A) Breaks up broadcast domains in a layer 2 switch internetwork B) Provides multiple broadcast domains within a single collision domain
C) Provides multiple collision domains on one switch port D) Acts as the fastest port to all servers
 
Answer & Explanation Answer: A) Breaks up broadcast domains in a layer 2 switch internetwork

Explanation:

virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer (OSI layer 2). LAN is the abbreviation for local area network and in this context, virtual refers to a physical object recreated and altered by additional logic.

VLANs work by applying tags to network packets and handling these tags in networking systems – creating the appearance and functionality of network traffic that is physically on a single network but acts as if it is split between separate networks. In this way, VLANs can keep network applications separate despite being connected to the same physical network, and without requiring multiple sets of cabling and networking devices to be deployed.

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Q:

What is String Args in Java?

Answer

String Args (String []) is an array of parameters of type String.


In Java, 'args' contains the supplied command-line arguments as an array of String objects. In other words, if you run your program as 'java MyProgram Hello World' then 'args' will contain ["Hello", "World"]. When a java class is executed from the console, the main method is what is called.

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Q:

You can use display planner to

A) add ads B) research keywords
C) display network D) All of the above
 
Answer & Explanation Answer: C) display network

Explanation:

Display Planner is a free Google Ads tool you can use to plan your Display Network ad campaigns.

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Q:

Define Executive Plan in Database SQL ?

Answer

Executive plan can be defined as:


* SQL Server caches collected procedure or the plan of query execution and used thereafter by subsequent calls.


* An important feature in relation to performance enhancement.


* Data execution plan can be viewed textually or graphically.

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Q:

What is the difference between creating String as new() and literal ?

Answer

When we create string with new() Operator, it’s created in heap and not added into string pool while String created using literal are created in String pool itself which exists in PermGen area of heap.



String s = new String("Test");

does not put the object in String pool , we need to call String.intern() method which is used to put them into String pool explicitly. its only when you create String object as String literal e.g. String s = "Test" Java automatically put that into String pool.

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Q:

Which is the world's most valuable company?

A) Apple B) Amazon
C) Microsoft D) Google
 
Answer & Explanation Answer: A) Apple

Explanation:

The world's most valuable company is Apple followed by Amazon and Microsoft.

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Q:

Jio is a big shot at reducing the cost of Internet access in India. The U.S., despite being the richest country in the world, lags far behind in terms of cost and penetration of Internet access. Cheap access to the Internet is an important step in bridging the access gap – access to good education, good healthcare, etc. But the market reaction to Jio is similar to the U.S. market’s reaction to firms announcing their intention to diversify.

(A) The final group of losers is the current shareholders of RIL. On announcement of Jio, the stock price of RIL fell.

(B) It shows that the market’s short-term reaction is usually proven correct in the long-run.

(C) On losing end, the first groups of losers are the shareholders of other telecom companies.

(D) The large amount of revenue the Government of India gets from auctioning off the nation’s natural resources is not necessarily a good thing because the Government does not have a stellar track record when it comes to spending the money. A large fraction of Government spending is wasted.

(E) The second loser is the Government of India. The big money the Indian Government was raking in selling cellular bandwidth was actually coming from the pockets of the cellular consumers. 

(F) The first obvious winners of this scheme are customers.

(G) The second winner is Mr. Ambani; he can potentially make a lasting impact as the man who brought Internet to millions of Indians.

 

Question:

Which of the following supports the decision of other companies opposing Reliance JIO Scheme?

A) Only A B) Both A & B
C) Only C D) Both C & E
 
Answer & Explanation Answer: D) Both C & E

Explanation:

As the arguments C and E states that other companies are on the losing end with this scheme, it is the only appropriate answer to this question.

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