AP Grama Sachivalayam / Ward Sachivalayam new notification is out in January 2020 for more than 16000 vacancies in various categories. Panchayat Secretary Grade 6 – Digital Assistants vacancies are there in all districts of AP. Following are questions appeared in Digital Assistants exam 2019. Candidates those appearing for this exam in 2020 can check the questions and answers given below.

A full binary tree with 2n+1 nodes contains

In series circuits, the expression for quality factor is

1. fr
2. Band width (BW)
3. fr / BW
4. BW / fr
   ANSWER: 3

Zenor diode is used as

1. Rectifier
2. Amplifier
3. Regulator
4. Oscillator
   ANSWER: 3

The cross over distortion is due to

1. power supply fluctuation
2. cut-in voltage of transistor
3. bias voltage
4. input signal
   ANSWER: 2

A ………. process generates I/C requests infrequently using more of its time doing computations.

1. I/O bound
2. Swapped
3. Mixed
4. CPU-bound
   ANSWER: 4

Paging involves breaking logical memory into blocks of same size called as

1. pages
2. segments
3. fragments
4. frames
   ANSWER: 1

The desirable criteria for CPU scheduling algorithm is

1. maximise CPU utilisation and minimise response time
2. maximise CPU utilisation and maximise response time
3. minimise CPU utilisation and minimise response time
4. minimise CPU utilisation and maximise response time
   ANSWER: 1

Round Robin Scheduling

1. allows interactive tasks quicker access to the processor
2. is quire complex to implement
3. gives each task the same chance at the processor
4. allows processor – bound tasks more time in the processor
   ANSWER: 3

……….. approach structures the operating system by removing all non-essential components from the kernel and implementing them as system and user – level programs.

1. monolithic kernel
2. micro kernel
3. macro kernel
4. mini kernel
   ANSWER: 2

Which of the following Gates are used as basic building blocks?

1. AND, OR and NOT
2. NAND and NOR
3. X-OR and X-NOR
4. AND and NAND
   ANSWER: 1

Convert binary to hexadecimal (111111110010)2

1. (EE 2)16
2. (FF 2)16
3. (EF2)16
4. (FD 2)16
   ANSWER: 2

How many AND gates and OR gates are required to realise Y = CD + EF +G?

1. 3 OR gates, 2 AND gates
2. 2 OR gates, 2 AND gates
3. 3 OR gates, 3 AND gates
4. 1 AND gate, 3 OR gates
   ANSWER: 2

The number of bits in operation code required for a computer with 64 distinct operation is

1. 64
2. 06
3. 32
4. 05
   ANSWER: 2

The operation performed in each clock pulse is called

1. micro operation
2. micro instruction
3. micro program
4. macro instruction
   ANSWER: 1

………… converts the programs written in assembly language into machine language

1. compiler
2. interpreter
3. linker
4. assembler
   ANSWER: 4

The address of operand’s address is available in instruction. This address mode is called as

1. direct addressing mode
2. register addressing mode
3. register indirect addressing mode
4. indirect addressing mode
   ANSWER: 4

Reverse Polish notation is often called

1. Postfix
2. prefix
3. infix
4. none of the above
   ANSWER: 1

Prefix of A-B / C*D $ E is

1. – / * $ A C B D E
2. / – A B C D * $ D E
3. – A * / B C $ D E
4. – A / B C * $ D E
   ANSWER: 3

main ( ) {
int i = 5;
print f “%d”, i = + + i = = 6);
}
The output is

1. 1
2. 5
3. 6
4. 0
   ANSWER: 1

By default any real number in C is treated as

1. a float
2. a double
3. a long double
4. a real
   ANSWER: 2

Which of the following operators can not be overloaded?

1. [ ]
   1. – >
2. ? :
3. *
   ANSWER: 3

A full binary tree with 2n+1 nodes contains

1. n leaf nodes
2. n non-leaf nodes
3. n-1 leaf nodes
4. n-1n non – leaf nodes
   ANSWER: 1

The total number of different trees that are possible with six nodes is

1. 64
2. 4
3. 58
4. 12
   ANSWER: 3

Grama Sachivalayam – Digital Assistant recruitment exam was held in 2019. The 2nd notification for Digital assistants posts was issued in January 2020. Following are questions and answers from the previous paper – 2019 of panchayat secretary – digital assistants. Candidates can avail more questions covering entire syllabus from our mock tests. See details below:

Digital Assistants Online Exams / Mock Tests

Previous Questions of Digital Assistants 2019:

A full binary tree with 2n+1 nodes contains

1. n leaf nodes
2. n non-leaf nodes
3. n-1 leaf nodes
4. n-1n non – leaf nodes
   ANSWER: 1

The total number of different trees that are possible with six nodes is

1. 64
2. 4
3. 58
4. 12
   ANSWER: 3

Convert the expression (AB) – (CD) / ((F+G) – H)) to equivalent prefix notation.

1. -*AB / *CD – + FGH
2. *-AB / *CD +- FGH
3. –AB / CD – + FGH
4. -*AB / *CD +- FGH
   ANSWER: 1

The common method used to store a graph is

1. digraph
2. stack
3. adjacency matrix
4. linked list
   ANSWER: 3

Consider the following program segment
i = 6720, j = 4
while (i%j) = = 0)
{
i = i / j ;
j = j + 1
}
On termination j will have the value

1. 4
2. 8
3. 9
4. 6720
   ANSWER: 1

What will be the output of the following C code?

include main ( ) {

printf (“% . of”, 2.89);
}

1. 2.890000
2. 2.89
3. 2
4. 3
   ANSWER: 2

Grama / Ward Sachivalayam Online Exams / Mock Tests for All posts – See Details

Which type of function among the following shows polymorphism?

1. inline function
2. virtual function
3. undefined funcion
4. class member functions
   ANSWER: 4

Select emp_name from department where dept_name LIKE __ Computer Science; which one of the following has to be included in the blank to select the dept_name which has computer science as its ending string?

1. %
2. –
3. ll
4. $
   ANSWER: 4

The number of attributes in a relation is called as its

1. cardinality
2. degree
3. tuples
4. entity
   ANSWER: 4

Start and Stop bits are used in serial communication for

1. Errod detection
2. Error correction
3. Synchronization
4. Slowing down the communication
   ANSWER: 3

How many IP addresses are available to a company with a class B address

1. 8192
2. 16384
3. 32768
4. 65536
   ANSWER: 3

__ layer of OSI model is responsible for the process to process delivery of the entire message.

1. data link layer
2. network layer
3. transport layer
4. session layer
   ANSWER: 4

A cathode ray tube converts

1. voltage into current
2. AC voltage into DC voltage
3. DC voltage into AC voltage
4. Electrical signals into visual signals
   ANSWER: 2

Figure of merit of a receiver is given as

1. (SNR)o / (SNR)i
2. (SNR)i / (SNR)o
3. (SNR)i (SNR)o
4. None of the above
   ANSWER: 3

Mixing is used in communication to

1. raise the carrier frequency
2. lower the carrier frequency
3. alter the deviation
4. change the carrier frequency to any required value
   ANSWER: 1

What device is used to demodulate a time division multiplexed analog wave?

1. high pass filter
2. low pass filter
3. band stop filter
4. band pass filter
   ANSWER: 4

Which of the following is not an advantage of digital modulation?

1. greater noise immunity
2. greater security
3. easier multiplexing
4. less band width requirement
   ANSWER: 1

The most commonly used connections for power systems as step up and step down transformers are

1. star – delta, star – star
2. delta – star, star – delta
3. star – star, delta – delta
4. star – delta, delta – star
   ANSWER: 3

In general daily applications, the electrical fan operates with a —— inductor motor.

1. single phase
2. two phase
3. three phase
4. poly phase
   ANSWER: 1

Synchronous motors are generally not self starting as

1. the direction of rotation is not fixed
2. the direction of instantaneous torque reverses after half cycle
3. the starters cannot be used on these machines
4. starting winding is not provided on these machines
   ANSWER: 4