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Consider the following example – Size of Plaintext – 48 bytes. Size of MAC – 20 bytes. Block Length – 8 bytes. How many bytes of padding need to be added to the system?

Correct Answer: 3
48 + 20 = 68 bytes. 72 is the next multiple of 8 (Block Length). 72 – 68 = 4. But we need to compensate 1 byte for length of the padding. Therefore, we require only 3 Bytes padding.

Select the correct differences between char and varchar data types? i. varchar is non unicode and char is unicode character data type ii. char is ‘n’ bytes whereas varchar is actual length in bytes of data entered in terms of storage size iii. varchar is variable in length and char is the fixed length string iv. For varchar, if a string is less than the maximum length then it is stored in verbatim without any extra characters while for char if a string is less than the set length it is padded with extra characters to equalize its length to given length

Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below
S-Block and P-Block Elements mcq question image
Its simplest repeating unit is

A file contains 1026 bytes. How many bytes of disk space will it consume if size of a disk block is 1024 bytes?

A spring mass system is on a horizontal plane. Spring constant is 2N/m & mass of block is 2kg. The spring is compressed by 10cm and released. A small ball is released from a height of 2m above the block on the horizontal plane. At what time should the ball be left if the block is released from the extreme position at t=0, given that the ball has to fall on the block when the speed of block is maximum?

A spring block system is on a horizontal surface. The block is compressed by 10cm. What should be the coefficient of friction between the block and ground such that the block comes to a stop at the mean position? Mass of block = 0.5kg & spring constant = 3N/m.

How many passes through the plaintext does the CCM require to generate the MAC value?

The cipher block is one block longer than the plaintext to accommodate the IV.

For a 150-bit message and a 10-bit MAC, how many values are the MAC value dependent on?

A copper block and an air mass block having similar dimensions are subjected to symmetrical heat transfer from one face of each block. The other face of the block will be reaching the same temperature at a rate is?

A weston differential pulley block consists of a lower block and upper block. The upper block has two cogged grooves, one of which has a radius of 150 mm and the other a radius of 125 mm. If the efficiency of the machine is 50% calculate the effort required to raise a load of 1.5 kN.