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Q:

How long is an IPv4 address?

A) 128 bytes	B) 32 bits
C) 32 bytes	D) 128 bits

Answer & Explanation Answer: B) 32 bits

Explanation:

Internet Protocol version 4 (IPv4) which defined an IP address as a 32-bit value

IPv4 is in contrast to IPv6, which defined an IP address as a 128 bits value.

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Q:

The SQL keyword BETWEEN is used:

A) for ranges	B) as a wildcard
C) to limit the columns displayed	D) All the above

Answer & Explanation Answer: A) for ranges

Explanation:

In SQL, BETWEEN Keyword is used for ranges like Number Ranges, Date Ranges, etc...

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Q:

What is the freezing point of water in Celsius?

A) 0 deg C	B) 32 deg C
C) -42 deg C	D) -32 deg C

Answer & Explanation Answer: A) 0 deg C

Explanation:

The freezing point of water and melting point is 0 °C or 32 °F. The temperature may be lower if supercooling occurs.

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Q:

Is DRAM Volatile or Nonvolatile?

Answer

DRAM is a Volatile random-access memory (VRAM).

Volatile random-access memory (VRAM) is random-access memory that retains its information when power is turned on.

Examples of volatile memory are primary storage (typically dynamic RAM, DRAM), and fast CPU cache memory (typically static RAM, SRAM, which is fast but energy-consuming and offer lower memory capacity per area unit than DRAM).

Non-volatile random-access memory (NVRAM) is random-access memory that retains its information when power is turned off.

Examples of non-volatile memory are flash memory (used as secondary memory) and ROM, PROM, EPROM and EEPROM memory (used for storing firmware such as BIOS).

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Q:

A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of

A) 18 m/s	B) 25 m/s
C) 30 m/s	D) 36 m/s

Answer & Explanation Answer: C) 30 m/s

Explanation:

The interval between object pass the same point is 4 sec.

That means in 2 sec, object reaches the top and in next 2 sec, it again reaches the same point.

By the info given, we can find the velocity of that point by using : v=u+(-gt)

0= u - 10×2

u = 20

Then the velocity at 25m is 20m/sec.

so the initial velocity is

$- v^{2} = u^{2} + (- 2 gh) 400 = u^{2} - 2 x 10 x 25 u^{2} = 900 = > u = 30 m / s$

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Filed Under: Physics
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Q:

Where is a hub specified in the OSI model?

A) Physical Layer	B) Data Link Layer
C) Application Layer	D) Session Layer

Answer & Explanation Answer: A) Physical Layer

Explanation:

Hubs regenerate electrical signals, which are specified at the Physical layer.

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Q:

Antonym of:: Amicable

A) Hostile	B) Loveable
C) Friendly	D) Peaceful

Answer & Explanation Answer: A) Hostile

Explanation:

Amicable means Friendly or in Loveable, peaceful sense.

Then Antonyms for Amicable are Opposite of Friendly => Unfriendly, Hostile, Unpeaceful, etc...

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Filed Under: Alphabet Test
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Q:

Demand side market failures occur when

A) supply curves do not reflect the full cost of producing a good or services	B) demand curves do not reflect consumer’s full willingness to pay for goods or services
C) government imposes tax on a good or a service	D) a good or service is not produced because no one demands it

Answer & Explanation Answer: B) demand curves do not reflect consumer’s full willingness to pay for goods or services

Explanation:

Market failure arises because it is not possible for the market to correctly weight cost and benefits in a situation in which some of the cost is completely unaccounted.

Demand-side market failures happen when demand curves do not reflect consumer’s full willingness to pay for goods or services.

Supply-side market failures occur when supply curves do not reflect the full cost of producing a good or services.

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Filed Under: Marketing and Sales
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