IT Trainer Questions

A poor Hashcode() function will result in frequent collision in HashMap which eventually increase time for adding an object into Hash Map.

Q = mc∆T refers to Specific Heat formula.

When heat energy is added to a substance, the temperature will change by a certain amount.

The relationship between heat energy and temperature is different for every material, and the specific heat is a value that describes how they relate.

Q = mc∆T

Q = heat energy (Joules, J)

m = mass of a substance (kg)

c = specific heat (units J/kg∙K)

∆T = change in temperature (Kelvins, K)

SELECT "column_name"

FROM "table_name"

WHERE "column_name" IS NULL.

Telnet uses TCP at layer 4. It uses IP at layer 3. We know that Telnet uses TCP/IP protocol, but in the question, it is asked specifically at layer 4 what is used in Telnet. So it is TCP at layer4 and IP at layer 3.

We have 12 months.

In every month we get 28 or more days. 

So that implies we get 28 days in each and every month.

The letter 'X' resembles the same as the tool AXE in sounding.

Hence, the alphabet X is a tool.

Hindi writer Krishna Sobti has been chosen for this years Jnanpith Award for her contribution to Indian Literature. This is 53rd Jnanpith Award for India.

Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. 

These are actually made to replace floppy disks that were used to store files and programs from the computer.

The format was originally developed to store and play only sound recordings but was later adapted for storage of data (CD-ROM).ese CD's uses Laser technology.