Punjab Police Head Constable Paper 2 Mock Test - 1 - Punjab Police Constable MCQ

The pattern followed is:

Hence, the correct answer is "127".

Alternate Method
The pattern followed is:
3 = 2² - 1
7 = 2³ - 1
15 = 2⁴ - 1
31 = 2⁵ - 1
63 = 2⁶ - 1
127 = 2⁷ - 1
Hence, the correct answer is "127".

The synonym of arid, parched and droughty is dry.

1st term = 34/2 +1 = 18
2nd term = 18/2 +1 = 10
3rd term = 10/2 +1 = 6
4th term = 6/2 + 1  = 4

Thus, the missing number is 5th term = 4/2 + 1 = 3

From the common explanation, we get Aarti sits third to the right of Kirti.

Hence, Option D is correct.

Final Arrangement:

Common Explanation:

References:

Eight students Kirti, Ayushi, Manu, Sona, Aarti, Bobby, Ankita and Divya are sitting around the square table.

Four students sit on each side while rest on each corner.

Students at the side face away from the centre and students at the corner faces towards the centre.

Inferences:

So, we need to arrange as follows to accommodate the information as stated in the question,

References:

Divya sits third to the left of Ayushi.

Kirti sits opposite to Manu and both faces away from the centre.

Inferences:

From the above references, we get the following two different cases:

Case 1:

Case 2:

References:

Neither Kirti nor Manu are beside Ayushi.

Sona sits immediate left of Ankita, who sits on the side of the table.

Bobby is not an immediate right of Ayushi.

Bobby is not adjacent to Manu.

Inferences:

So, from this case 2 will be eliminated as neither Kirti nor Manu are beside Ayushi.

Now, from case 1 we get the following final arrangements:

As dwelling place of 'Nun' is 'Convent' similarly the dwelling place of 'Hen' is 'Cote'.

The pattern followed is,

In the first row,

The first figure is surrounded by two circles.

The second figure is surrounded by one circle.

The third figure is not surrounded by any circle.

In the second row,

The first figure is surrounded by one square.

The second figure is not surrounded by any square.

 In the third figure there is no outline.

In the third row,

The first figure is surrounded by two triangles.

The second figure is surrounded by one triangle.

And,

The third figure should not be surrounded by any triangle.

The correct image that fits is,

Hence, option 3 is the correct answer.

Hence, option D is correct.

The pattern followed here is;

15 is the wrong term that doesn't follow the pattern here.

There should be 12.5 in place of 15.

Hence, "15" is the correct answer.

From the common explanation, we can say that there are at least 16 boys sitting in the row.
Hence, Option B is correct.
Final Arrangement:

Common Explanation:
References:
Only two boys sit to the left of J.
Eight boys sit between R and J.
Only three boys sit between R and M.
Inferences:
From the above references, we get two different cases:

References:
P sits fourth to the right of R.
O sits third to the left of M.
Inferences:
So, from this case 2 will be eliminated as P sits fourth to the right of R.

References:
Only three boys sit between O and H.
T sits third to the right of M.
V sits fourth to the right of O.
More than 12 boys sit between P and H.
More than seven boys sit between P and J.
Inferences:
From the above reference, we get the final arrangement:

The correct answer is Spilt cells.

Key Points

• To divide a table cell into more cells
  • Click the table cell that you want to split.
  • Under Table Tools, on the Layout tab, in the Merge group, click Split Cells, and then do one or more of the following:

• To divide a cell vertically, in the Number of columns box, enter the number of new cells that you want.
• To divide a cell horizontally, in the Number of rows box, enter the number of new cells that you want.
• To divide a cell both horizontally and vertically, in the Number of columns box, enter the number of new columns that you want, and then in the Number of rows box, enter the number of new rows that you want.

Additional Information

• Merge cells:- Highlight the cells you want to merge.
  • Click on the arrow just next to Merge and Center.
  • Scroll down to click on Merge Cells. This will merge both rows and columns into one large cell, with alignment intact.
  • This will merge the content of the upper-left cell across all highlighted cells.
  • Put your cursor on the row that you want as the first row of your second table.
  • On the LAYOUT tab, in the Merge group, click Split Table.
  • The table splits into two tables. You can split the table further, as long as there are multiple rows.

• Autofit
  • Click anywhere in the table. In Table Tools click the [Layout] tab > locate the Cell Size group and choose from the following options.
  • To fit the columns to the text (or page margins if cells are empty), click [AutoFit] > select "AutoFit Contents.

The correct answer is Control Unit.

• A synchronization signal is a specific signal used in various communication and electronics systems to ensure different parts of a system or multiple systems work together coherently and with proper timing.
• The primary purpose of synchronization signals is to establish a common reference time or clock for all the components involved.
• Synchronization signals can come in various forms, depending on the type of system they are used in.

• A control unit or CU is circuitry that directs operations within a computer's processor. ..
• Examples of devices that utilize control units include CPUs and GPUs. A control unit works by receiving input information that it converts into control signals, which are then sent to the central processor.
• A memory unit is the amount of data that the memory can hold. Besides, we measure this storage capacity in terms of bytes. Moreover, there are different units of memory as per the requirement.

The correct option is (4) By default, it has 3 placeholders.

Key Points

• Choose Home > New Slide to add a new slide to your presentation. The Title and Content slide layout are now added. This slide arrangement, which is the default, has placeholders for a title, bulleted text, pictures, and illustrations.
• Microsoft creates a Title slide by default when you create a new presentation because it expects the first slide in your presentation will be for the title. Two text placeholders are included on a title slide.
• The font family and font size of the regular input text are automatically carried over to the placeholder text, but there may be times when you want to modify the color of the placeholder text.

Additional Information

• Create a presentation storyboard or outline using the outline view. It merely shows the text on your slides; no graphics or other visual elements are displayed.
• Only a static string of text can be used as placeholder help information, which may not always be enough to convey the intended message.

The correct answer is option 2.

 Key Points

• CAD stands for Computer Aided Design.
• CAD is a software technology used by architects, engineers, and designers to create 2D and 3D models of products and structures.
• CAD software helps to improve accuracy, reduce errors, and increase productivity in the design process.
• CAD is used in a variety of industries including automotive, aerospace, and construction.

 Additional Information

• Computer add dialog: There is no such term as "computer add dialog" in the field of computer-aided design.
• Computer Aided Data: - This option is incorrect as "data" is a broad term and does not specifically refer to the process of design.
• Computer Aided Diagram: This option is incorrect as "diagram" is a specific type of visual representation and does not encompass the entire design process. 

The correct answer is A - iii, B - iv, C - i, D - ii

Key Points

• Task view allows you to organize the applications across multiple virtual desktops. 
• This feature allows you to resume previous activities, perform multitasking operations etc.
• In Windows 10, you can find the option to view tasks on the taskbar. The shortcut to use it is Win + Tab.
• Sometimes you want to hide the desktop icons temporarily rather than deleting them. To do this, right-click on the desktop, go to view and select show desktop icons.
• For displaying or hiding the icons you can use the shortcut Win + D.

Additional Information

• To take the current page screenshot in windows, use the shortcut key Alt + PrntSc.
• To add a virtual desktop, go to the task view, and select new desktop. Or you can use the shortcut Win + Ctrl + D. Hence option 2 is correct.

Techniques for Resolving Conflicts and Synchronizing Processes
There are several techniques that can be used to resolve conflicts and synchronize processes in various systems. These techniques include:
1. Mutual Exclusion:
- This technique ensures that only one process accesses a shared resource at a time.
- It uses locks, semaphores, or other synchronization mechanisms to enforce exclusive access.
- By preventing concurrent access, conflicts and data corruption can be avoided.
2. Busy Waiting:
- In this technique, a process continuously checks for the availability of a resource.
- It keeps looping until the resource becomes available, which may waste CPU cycles and decrease overall system efficiency.
- However, it can be useful in situations where the waiting time is expected to be short.
3. Deadlock:
- Deadlock occurs when two or more processes are unable to proceed because each is waiting for a resource held by the other.
- It can be resolved using various techniques like resource allocation graphs, deadlock detection algorithms, and deadlock prevention algorithms.
4. Starvation:
- Starvation happens when a process is perpetually denied necessary resources or unable to progress.
- It can be resolved by implementing fair scheduling algorithms that ensure every process gets a fair share of resources.
In conclusion, mutual exclusion is the appropriate technique to resolve conflicts and synchronize processes. It ensures exclusive access to shared resources, preventing conflicts and data corruption. Busy waiting, deadlock, and starvation, on the other hand, are potential issues that need to be addressed to maintain system efficiency and fairness.

To return the desired result "MCQ@ Questions" in cell C1, you can use the CONCATENATE function or the ampersand (&) operator in Excel.
Here is the detailed solution:
1. The correct function to use in this case is the CONCATENATE function or the ampersand (&) operator.
2. The CONCATENATE function allows you to join multiple text strings together. It takes multiple arguments and concatenates them into a single string.
3. The ampersand (&) operator also performs the same function as the CONCATENATE function and joins text strings together.
4. In this case, you want to join the value in cell A1 ("MCQ") with the text string "@" and the value in cell B1 ("Questions").
5. To achieve this, you can use the following formula in cell C1:
=CONCATENATE(A1, "@", B1) or =A1 & "@" & B1
This formula will concatenate the text in A1, the "@" symbol, and the text in B1, resulting in the desired output "MCQ@ Questions" in cell C1.
Therefore, the correct answer is option C: =A1 & "@" & B1.

Modulator-demodulator
A modulator-demodulator, also known as a modem, is a device that converts signals between digital and analog form. It is commonly used to transmit data over telephone lines.
Functions of a Modem
- Modulation: The modem converts digital data into analog signals that can be transmitted over analog communication channels such as telephone lines. This process is called modulation.
- Demodulation: On the receiving end, the modem converts the analog signals back into digital data. This process is called demodulation.
Conversion Process
- Digital to Analog Conversion: The modem takes digital signals consisting of 0s and 1s and converts them into analog signals that can be transmitted over analog channels. This conversion process involves techniques such as amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM).
- Analog to Digital Conversion: On the receiving end, the modem takes the analog signals and converts them back into digital signals. This conversion process involves techniques such as amplitude demodulation (ADM), frequency demodulation (FDM), or phase demodulation (PDM).
Modem Types
- Analog Modem: Converts digital signals to analog signals for transmission over analog communication channels.
- Digital Modem: Converts analog signals to digital signals for transmission over digital communication channels.
Conclusion
A modulator-demodulator, or modem, is a device that performs the conversion between digital and analog signals. It converts digital signals into analog signals for transmission and converts analog signals back into digital signals for reception. Therefore, the correct answer is C: Both A and B.

To add an image to a template in Microsoft Office, follow these steps:
1. Open the template in Microsoft Office.
2. Look for the toolbar with various options and buttons.
3. Locate the Picture button on the toolbar. This button is represented by an icon that looks like a picture or a camera.
4. Click on the Picture button. This will open a dialog box or a file explorer window.
5. In the dialog box or file explorer window, navigate to the location where the image file is stored on your computer.
6. Select the image file by clicking on it once.
7. Click the Insert or Open button in the dialog box or file explorer window to add the image to the template.
8. The image will now be inserted into the template at the current cursor position.
Please note that the specific toolbar name may vary depending on the version of Microsoft Office you are using. However, the Picture button is commonly used and should be available in most versions.
So, the correct answer is D: Picture toolbar.

UNIX operating system is a/an ______.
UNIX operating system is an all of the above - a time sharing operating system, a multi-user operating system, and a multi-tasking operating system.
Time sharing operating system:
- UNIX allows multiple users to access the system simultaneously, with each user having their own terminal or session.
- The operating system efficiently allocates and manages system resources such as CPU time, memory, and peripherals among the users.
Multi-user operating system:
- UNIX supports multiple users accessing the system at the same time.
- Each user has their own user account, with their own files and processes.
- Users can concurrently perform tasks and share resources on the system.
Multi-tasking operating system:
- UNIX allows multiple processes to run concurrently.
- It manages the execution of multiple programs simultaneously, dividing the CPU time among them.
- Users can run multiple applications or tasks at the same time, improving overall system efficiency.
Summary:
UNIX is a versatile operating system that supports time sharing, multi-user, and multi-tasking capabilities. It allows multiple users to access the system simultaneously, runs multiple processes concurrently, and efficiently manages system resources.

To insert three columns between columns D and E, you need to follow these steps:
1. Select column E:
- Click on the column header labeled "E" to select the entire column.
- Typically, you can click on the letter "E" at the top of the spreadsheet to select the column.
2. Insert three columns:
- Right-click on the selected column header.
- From the context menu, choose the "Insert" option.
- This will insert three new blank columns to the left of the selected column (E).
3. Verify the inserted columns:
- Check that the new columns have been inserted correctly by observing the column labels.
- The three new columns should be labeled D, E, and F, respectively.
By following these steps, you have successfully inserted three columns between columns D and E in your spreadsheet.

The correct answer is Real time software

CONCEPT:

Real-time software:

• Most operating systems are designed to multitask.
• This means that several processes will be running at the same time.
• But the reality is that each processor only runs or executes one activity or command at a time.
• Every operating system comes with a scheduler that decides what activity should take place at a particular time.

Examples:

• Real-time software programs can be found in various applications. Some of them are known as anti-virus programs, which perform scheduler maintenance checks.
• as well as database applications like airline database controls, and 24-hour transaction facilities.
• Real-time software programs are also found in security systems and imaging as part of a database application.

So Software that measures, monitors, analyzes, and controls real-world events is called Real-time software.

Additional Information

System Software:

• An operating system is a system software
• It is an interface between the computer, user, and the hardware
• It performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers
• Some of the examples of operating systems are Windows, Linux, VMS, etc.

Scientific software :

• Scientific and engineering software satisfies the needs of a scientific or engineering user to perform enterprise-specific tasks.
• Such software is written for specific applications using principles, techniques, and formulae specific to that field.
• Examples are software like MATLAB, AUTOCAD, PSPICE, etc. 

Business software:

• Business software is any software or set of computer programs used by business users to perform various business functions.
• These business applications are used to increase productivity, measure productivity, and perform other business functions accurately.

The correct answer is a - ii, b - iii, c - iv, d - i

Key Points

• Ubuntu
  • ​It is an open-source operating system.
  • It is a complete Linux operating system, freely available with both community and professional support. 
  • It is sponsored by Canonical Ltd.
  • It is suitable for cloud computing, servers, desktops, and internet of things (IoT) devices. 
• Firefox
  • ​It is a Web browser.
  • It was developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation.
• Ms-Outlook
  • It is the email client included with the Microsoft Office suite.
  • It is a personal information manager software system from Microsoft.
  • It is a part of the Microsoft Office suite.
• McAfee
  • ​It is an antivirus software created and maintained by McAfee.
  • McAfee VirusScan Enterprise combines anti-virus, anti-spyware, firewall, and intrusion prevention technologies to stop and remove malicious software.

Use structure “By + question word + auxiliary + past participle + object ?”
As per the given above sentence is given in Passive Voice.
By whom was it written?
Therefore , option B will be required answer .

• Meaning of Indict: Formally accuse of or charge with a crime.
• Meaning of Condemn: express complete disapproval of; censure.
• Meaning of Reprimand: a formal expression of disapproval
• Meaning of Allege: claim or assert that someone has done something illegal or wrong, typically without proof

One word substitution is Versatile.

Versatile: able to adapt or be adapted to many different functions or activities.
Nubile: sexually mature; old enough for marriage.
Exceptional: unusually good; outstanding.
Gifted: having exceptional talent or natural ability.
 

We can say that ,
Use structure “subject + auxiliary + past participle + by + object ”
The above given sentence is given in Passive Voice :-
I was told by somebody that there had been an explosion in the Town Hall.
Hence , required answer will be option D .

As per the given above sentence is given in Passive Voice.
Use structure “auxiliary + past participle”
Grass is not eaten by a lion, however hungry he may be.
Hence , option A will be correct answer .