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In DBMS, Superclass/subclass relationships with a single super-class. A shared subclass may be represented in multiple superclass/subclass relationships, where each relationship has a single superclass.Understanding Superclass/Subclass Relationships in DBMS
A single superclass/subclass relationship using more than one superclass. Each superclass represents a distinct entity type. Subclass represents a group of objects that is a subset of the UNION of the distinct entity types. This subclass is known as union type or a category.Example
Consider the scenario where we have three distinct entity types: PERSON, BANK, and COMPANY. In a motor vehicle registration database, a vehicle owner can be classified as a person, a bank holding a lien on the vehicle, or a company. To create a class (i.e., a collection of entities). That encompasses all three entity types, we need to construct a subclass that represents the union of the three sets, which we will call OWNER. This subclass is a category, also known as a union type.Category in an Entity-Relationship Diagram
To visually represent this subclass in an Entity-Relationship (EER) diagram, we use a circle with the symbol “∪” to denote the set union operation, which is connected to the superclasses COMPANY, BANK, and PERSON. An arc with the subset symbol connects the circle to the OWNER category, indicating that the OWNER category is a subclass of the union of the three entity types. If necessary, we can display a defining predicate next to the line from the superclass to which the predicate applies.
In Figure below, we can see two categories displayed in the EER diagram: OWNER and REGISTERED_VEHICLE. OWNER is a subclass of the union of PERSON, BANK, and COMPANY, while REGISTERED_VEHICLE is a subclass of the union of CAR and TRUCK.Comparison of Category and Shared Subclass: OWNER and ENGINEERING_MANAGER
Category is a subclass. It has two or more superclasses representing distinct entity types. Superclass/subclass relationships only have a single superclass. To better understand the distinction between a category and other subclass relationships, let us compare the OWNER category in Figure above with the shared subclass ENGINEERING_MANAGER.
ENGINEERING_MANAGER subclass is member of each of these superclasses: ENGINEER, MANAGER, and SALARIED_EMPLOYEE. Entity which is part of ENGINEERING_MANAGER must also exist in all three of its superclasses. So, ENGINEERING_MANAGER is subset of the intersection of the three classes. Engineering manager must be an ENGINEER, MANAGER, and a SALARIED_EMPLOYEE.
On the other hand, a category such as OWNER is a subset of the union of its superclasses. Entity that is member of OWNER must exist in only one of its superclasses. In Figure above, an OWNER entity may be COMPANY, BANK, or PERSON.
Attribute inheritance operates in the case of categories. In Figure above, each OWNER entity inherits the attributes of COMPANY, PERSON, or BANK. It depends on superclass to which entity belongs. In a shared subclass such as ENGINEERING_MANAGER (Figure above), the subclass inherits all the attributes of its superclasses SALARIED_EMPLOYEE, ENGINEER, and MANAGER.Total and Partial Categories
A category can be total or partial. Difference between category and shared subclass, such as ENGINEERING_MANAGER. It is that the latter must exist in all three superclasses. Category is a subset of the union of its superclasses.
A category can be total. It holds the union of all entities in its superclasses. A category can also be total. It can hold subset of the union. A total category is represented by a double line connecting the category and the circle. A partial category is indicated by a single line.
Superclasses of a category may have different key attributes. These may have same key attribute. If the category is total, it may be represented as a total specialization or a total generalization. The choice of which representation to use is subjective. If the two classes represent the same type of entities and share numerous attributes. It also has same key attributes, specialization/generalization is preferred. Otherwise, categorization (union type) is more appropriate.
It is important to note that not all modeling methodologies have union types. In such models, a union type must be represented indirectly.
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Sunspots may be going into hibernation, a phenomenon unseen since the 17th century that could lead to cooler global temperatures, scientists said Tuesday. It’s not clear how rising temperatures from greenhouse gas emissions may offset global cooling, and scientists are still not totally sure how our star affects Earth’s climate, however. But a forthcoming period of solar quiet will help settle the questions.
Activity in the sun is building toward an expected peak sometime in 2013. Yet, despite a few notable solar flares, things are strangely calm. There are fewer sunspots in this cycle than expected, and they’re fainter than usual, for instance. The east-west plasma jet stream inside the sun is apparently missing, and the magnetic field’s pace of migration toward the poles is slowing down.
Based on these sets of findings, which were presented Tuesday at the annual meeting of the American Astronomical Society’s Solar Physics Division in Las Cruces, N.M., heliophysicists believe the current solar cycle, Cycle 24, could be the last one for a while. The sun might be entering a period of hibernation.
This was previously observed from 1645 to 1715, a period known as the Maunder Minimum in which there were practically no sunspots. The period coincided with part of the “Little Ice Age,” in which average temperatures in the northern hemisphere dropped by 2 to 4 degrees F.
Scientists said any temperature drops from a new prolonged solar minimum would be very small, however — likely not enough to offset warming from greenhouse gases. Recent 11-year solar cycles have changed global surface temperatures by 0.1 degrees C, said Judith Lean, a solar physicist with the US Naval Research Laboratory, in an AFP story.
Still, a prolonged solar sleep could impact space weather, space travel and even Earth communications. Less sunspot activity means less solar radiation, a slower solar wind and a weaker magnetic field, scientists said.
These small magnetometers (alien cubes?) measure magnetic strength on Earth and in the atmosphere to determine how much of the sun’s magnetic energy has been transferred to Earth’s magnetosphere. In 2009, that energy reached record lows, partly because of the speed of the solar wind and the magnetic fields embedded within it.
Yet another paper on recent solar activity showed that the deep solar minimum back in 2008, when the solar disk was spotless, caused magnetic effects on Earth to drop. These magnetic effects cause the aurora, for one thing, and in extreme cases could cause power grid failures on Earth or induce dangerous currents in long pipelines, according to a NASA news release.
Given the period of recent quiet, Solar Cycle 25 could be delayed until 2023 or 2023 — or even longer than that, according to Frank Hill, associate director of the National Solar Observatory’s Solar Synoptic Network.
“If we are right, this could be the last solar maximum we’ll see for a few decades. That would affect everything from space exploration to Earth’s climate,” Hill said.
What is 3 GPP?
3GPP stands for 3rd Generation Partnership Project. Many telecommunications associations grouped together and developed a global application of 3G communication. They were dedicated to making a better channel for people to share information and communicate with each other. This included many telecommunications corporations from different countries like Japan, China, South Korea, Europe, and the US.
There were two associations from Japan: “Radio Industries and Business” and the “Telecommunication Technology Committee.”. “China Communication Standard Association” was from China, “Telecommunication Technology Association” was from South Korea, “European Telecommunication Standard Institute” was from Europe, “Telecommunication Standards Development Society” was from India, and the one from the US was “Alliance for Telecommunication Industry Solution.” They were all together known as 3 GPP. This association was held in December 1998 in Europe.
They provide members with a stable environment to produce the reports and specializations that define 3GPP technologies.
Description: This illustrates the working of 3GPP ecosystemStandards of 3GPP
Following are the standards of 3GPP −GSM
GSM stands for “Global System for Mobile Communication,” and it was developed by the European Telecommunication Standards Institute (ETSI).The GSM architecture works with the help of MS, BSS, and NSS. MS stands for Mobile System, it refers to the mobile phone we are using daily. BSS stands for Base Station Subsystem which is divided into two parts BTS (Base Trans receiver Station) and BSC (Base Station Controller). BTS handles the task of sending or receiving the signals to different MS. While the BSS maintains the flexibility of BTS and maintains the traffic of signals. It also ensures that BTS doesn’t have a lot of hectic schedules. It included 2G networks.
BSS is connected to NSS, which is the central part of this architecture. It contains all the data about the user. NSS stands for Network Switching Subsystem, which is subdivided into 5 parts and they are MSC (Mobile Switching Center), VLR, HLR, AUC, and EIR. The major role is played by MSC in NSS. MSC helps in call switching. The parts like VLR, HLR, AUC, and EIR help MSC and reduce its work. So the pressure on MSC can be reduced.HSPA
HSPA stands for “High Speed Packet Access” and it provides faster transmission than GSM. It provides transmission service faster than GSM because it collects data in packets and these packets provide data in one go so its speed of data is a bit faster. It utilises WCDMA protocol to work. There are mainly two types of protocol that work parallel to HSPA. They are “High Speed Downlink Packet Access (HSDPA)” and “High Speed Uplink Packet Access (HSUPA)”. They both mainly increase the speed of 14mb/s and 5.8 mb/s respectively. HSDPA was released with Release 5 and HSUPA was released with Release 6.
HSPA with the help of HSDPA and HSUPA reduces latency which means it increases smoothness of applications which use high network signals. HSPA increases system capacity and reduces the production cost per bit. The main problem with HSPA is that it is not suitable for Low bandwidth application for eg. Voice application. It is for 3G networks.LTE
LTE stands for “Long Term Evaluation” and it is also known as 3GPP LTE. It was developed because in 2004, WCDMA rolled out and 3GPP decided to move completely towards Orthogonal Frequency Division Multiplexing as modulation. The main focus was on converting the core network into a pure packet switched network. It included 4G networks.
Goals for LTE are −
It aimed to achieve a peak data rate of 100 Mbit/s in downlink and 50 Mbit/s in uplink.
Spectral efficiency was 5 and 2.5 bit/s/Hz for downlink and uplink respectively.
Control panel latency was between 50 and 100 ms.
User plane latency was about 5 ms in network with single MS.5G Standards
This standard is newly defined by 3GPP with release 15. As the era of digitalization increases, demand for high speed networks is rapidly increasing due to which efforts are made to improve network connection. The 5 generation standard has the highest speed compared to other standards. 5G is already launched in the market.3GPP VS 3GPP2
3GPP (3rd Generation Partnership Project) and 3GPP2 (3rd Generation Partnership Project 2) are both standards organizations focused on developing standards for mobile communications technology. However, they have some differences in their focus and scope.
3GPP focused on WCDMA while 3GPP2 focused on CDMA 1X and EVDO.
3GPP was hosted by ETSI in Europe with partners from America and Asia while 3GPP2 was hosted by TIA in the USA with partners from Asia.
3GPP has developed 4G and now 5G. But 3GPP2 is still offering a 3G network.
3GPP provides its services in Asia and America while 3GPP2 provides its service of 3G Worldwide.
So we say that 3GPP develops faster than 3GPP2. Both are the standard body behind the Universal Mobile Telecommunication System (UMTS).Conclusion
The data we use today to transmit our information was developed due to the collaboration of a six country’s Telecommunication company’s association. Now the network speed has improved a lot. We started with 1G and today we use a 5G network. As technology is growing the demand for high speed networks is increasing and tirelessly efforts are made to improve the network.FAQs
Q1. How many BTS and BSC are present in a single BSS, and how many BSS are connected to an NSS?
Ans. There are 4–5 BTS present in BSS, while there is only one BSC. And many BSS can be connected to NSS. There is no fixed number of BSS counts connected to NSS.
Q2. What are HSDPA and HSUPA?
Ans. When the tower sends a signal to the mobile system, it is HSDPA. And when the mobile system sends the signal to the tower, it is HSUPA. They both enhance the speed of data access.
Q3. What is the relationship between 3GPP and the International Telecommunication Union (ITU)?
Ans. 3GPP works closely with the ITU to develop and maintain standards for mobile communications technology. The ITU sets overall guidelines and recommendations for global telecommunications, while 3GPP develops the technical specifications and standards for specific mobile technologies.
Definition of B2C
Business-to-Consumer or B2C sells goods and services directly between a business and the consumers who will ultimately use them.
A business can be started and expanded in a variety of ways. Some companies concentrate on marketing products and services to other companies, whereas others concentrate on selling directly to consumers. Some companies perform both.
Business-to-consumer interactions occur when a business sells its products or services directly to clients who will utilize them in the future. B2C transactions are common in daily life. Consider whether you purchase a new electrical device. The primary factor driving the B2C sector is consumer behavior. To succeed, business-to-consumer (B2C) companies must retain their loyal customer base. They must understand what their customers want and how to persuade them to buy. This initiative resulted in the development of the B2C sector. One of the major issues for B2C enterprises, however, is keeping up with the appropriate items and services for their customers. Understanding your customers well will increase their commitment and reduce the cost of losing them to a rival companyImportance of B2C Large and Diverse Market Lower Cost
While fewer employees and physical resources would be required when using a website, operating costs would be reduced. By utilizing the B2C model, businesses can reduce additional costs for employees, equipment, and electricity. They could manage stock and storage effectively with fewer staff and assets.Clear Interaction
Companies that use the B2C business model have direct, one-on-one interactions with their clients.Push notifications, SMS, and emails can all be used for this. Also, companies can actively track results to identify the best communication plan. To improve products or services, they can also directly ask customers for input.Example of B2C Transactions
One of the best B2C examples of a large B2C business nowadays is Shopify. Small enterprises now have a platform where they may sell their products digitally and attract new clients.
Amazon is an expert in cloud computing, machine intelligence, digital streaming, and e-commerce. When customers purchase items from Amazon, they are engaging in a business-to-consumer transaction. The customer also pays for the internet service provided by Amazon.B2C Marketing
Businesses that sell directly to customers employ a variety of methods, techniques, and instruments to market their products.
Traditional marketing channels have been shattered in recent years by the explosion of digital platforms. To successfully engage consumers, companies need to manage a variety of connections and adapt their content for each situation and platform. Also crucial is establishing and upholding a strong brand presence on digital channels, which gives B2C businesses more chances to connect with clients and build brand image. B2C marketing is heavily reliant on local search, brand websites, and social networks to help companies reach potential clients and build brand awareness.Future of B2C
The way people purchase goods and services has already been changing quickly, and this trend is just gaining speed. While some businesses are being destroyed, others, both new and old, are being given enormous opportunities.
The following forces have been recognized as influencing this change in consumer purchasing patterns −
Brands and marketplaces are interacting. According to the results of our survey, consumers are far more interested in online markets than they were a year ago. Many brands will be replaced by marketplaces, especially those that compete primarily on price. Certain companies will succeed beyond the markets, but they will need to differentiate themselves from the competitors more.
In the past, convincing people to buy a product or use a service was necessary. But, consumers have more and more opportunities to try out products and services without making significant financial or lock-in commitments. Yes, rents and subscriptions have done this in the past, but this business model is becoming more popular in several industries. As a result, retention has replaced acquisition as the primary source of revenue since you must persuade consumers to keep utilizing services or goods rather than just purchasing them once. That encourages businesses to put more emphasis on the experience’s overall quality rather than just on persuasion.Conclusion
B2C marketing refers to the practice of promoting goods or services directly to consumers by businesses. Technology has evolved, and B2C companies have recently started to focus on mobile users. When deciding whether to use a B2C model, it is important to consider the sort of good or service being offered, the price for the product or service, and the intended customer connection. B2C companies should generally focus on creating a strong brand and providing an excellent customer experience. B2b marketers, on the other hand, must prioritize building long-lasting relationships and providing in-depth explanations of their products or services.FAQs
Q1. What happened to B2C trading, amid the dot-com revolution?
Ans. More than 20 years after the dot-com era, B2C businesses that operate online still rule the sales volume. Early dot-com boom participants Amazon, Priceline, and eBay went on to grow their companies and dominate the online commerce sector.
Q2. Are podcasts used by B2C marketers?
Ans. Just 19.1% of B2C marketers employ podcasts or even other audio material in their marketing, according to the poll. 37.4% of people who use it say it’s one of their most useful trends. Even though adoption seems to be low in 2023, the data indicates that furthermore, B2C marketers will integrate audio content into their campaigns in the coming year.
Q3. What does the B2C target market mean?
Ans. The population that a company intends to sell its goods or services to is known as a B2C target market. Companies may have a variety of target markets for different kinds of products and services.
ACPI stands for Advanced Configuration and Power Interface. It was developed to replace the older Advanced Power Management (APM) standard, which was limited in its capabilities. ACPI provides a more comprehensive framework for managing system power, thermal management, and device configuration.
The ACPI specification includes a set of tables that provide information about the system’s configuration, such as the location and type of devices, as well as their power requirements. The operating system uses this information to manage device power usage, and to allow devices to enter low-power states when they are not in use.History of ACPI
ACPI was first introduced by Intel, Microsoft, and Toshiba in 1996 as a replacement for the Advanced Power Management (APM) standard, which was limited in its capabilities. The goal of ACPI was to provide a more comprehensive framework for managing system power, thermal management, and device configuration.
The first version of the ACPI specification, ACPI 1.0, was released in 1996. It included support for basic power management features such as system power states, device power management, and thermal management.
Over the years, ACPI has been updated and improved with each new version of the specification. ACPI 2.0, released in 2000, added support for hot-plugging of devices and dynamic processor voltage and frequency control.
ACPI 3.0, released in 2004, introduced support for virtualization technology and enhanced thermal management features. ACPI 4.0, released in 2006, added support for scalable power management and platform-level data models.
The latest version of ACPI is ACPI 6.4, which was released in 2024. It includes support for new devices such as solid-state drives (SSDs) and non-volatile memory express (NVMe) devices, as well as enhancements to power management and thermal management features.Purpose of ACPI
The main goals of ACPI are −
Efficient power management − ACPI allows the operating system to manage power usage of the system’s devices, such as the CPU, GPU, and hard drives.
Hardware configuration − ACPI provides a standardized way for the operating system to detect and configure hardware components, such as USB devices, network adapters, and storage devices.
System-level events − ACPI provides support for system-level events such as power button presses, lid closures, and battery status changes.Components of ACPI
The components of ACPI (Advanced Configuration and Power Interface) are −
ACPI BIOS − The ACPI BIOS is the firmware that implements the ACPI specification. It provides the interfaces between the operating system and the hardware, and manages power and device configuration.
ACPI tables − The ACPI specification defines a set of tables that contain information about the system configuration, including the devices installed in the system, their characteristics, and their power requirements. These tables are stored in the system’s BIOS and are used by the operating system to manage power and device configuration.
ACPI driver − The ACPI driver is a software component that runs in the operating system and provides the interfaces between the operating system and the ACPI BIOS. It is responsible for managing power usage and hardware configuration.
ACPI control methods − The ACPI specification defines a set of control methods that allow the operating system to communicate with the ACPI BIOS to control power usage and hardware configuration. These control methods are implemented in the ACPI BIOS firmware.
ACPI system interfaces − The ACPI specification defines a set of system interfaces that allow the operating system to communicate with the hardware components of the system. These interfaces include the ACPI System Control Interrupt (SCI), which is used to signal system-level events such as power button presses and lid closures.ACPI Implementation and Support
ACPI is implemented in the system’s BIOS firmware and requires support from both the hardware and operating system. Here are some details about ACPI implementation and support −
BIOS firmware − The system’s BIOS firmware must support ACPI, and the ACPI tables must be correctly configured to provide the necessary information about the system’s configuration and power requirements.
Operating system support − The operating system must support ACPI and have the necessary ACPI drivers installed. Most modern operating systems, including Windows, macOS, and Linux, provide ACPI support out of the box.
ACPI settings − ACPI settings can be configured in the system’s BIOS setup utility or through the operating system’s power management settings. These settings allow users to customize power management settings, such as the behavior when the power button is pressed, or the system’s power management mode.Advantages of ACPI
Improved power management
Enhanced functionalityLimitations of ACPI
Power management limitationsConclusion
ACPI is an important standard for managing power usage and device configuration in modern computer systems. ACPI allows for more efficient power management, standardized device configuration, and system-level event handling. While ACPI has some limitations, including compatibility issues and limited control over power management settings, its benefits far outweigh its limitations. With widespread support from hardware manufacturers and operating system developers, ACPI is an essential part of modern computing and will continue to play an important role in improving system efficiency and functionality.FAQs
Q1. How can I access ACPI settings on my system?
Ans. ACPI settings can typically be accessed through the system’s BIOS setup utility or through the operating system’s power management settings.
Q2.Can I disable ACPI on my system?
Ans. While it is possible to disable ACPI in some systems, doing so can cause compatibility issues and limit the functionality of the system.
Q3. What is the difference between ACPI and APM?
Introduction to CAPF
Central Armed Police Forces (CAPF) was created to safeguard internal security and uphold law and order throughout the nation.
To handle a range of scenarios, including riot control, counterterrorism, and disaster management, CAPF soldiers receive extensive training. Also, they have the most up-to-date tools and equipment at their disposal to perform their jobs effectively. The CAPF has been essential in preserving peace and order throughout the nation, including in regions with insurrections and terrorist attacks. They have also participated in rescue efforts and disaster aid during natural disasters.Structure of CAPF
Following is a general description of the CAPF structure −
Director-General (DG) − The DG is each CAPF force’s highest-ranking officer and is in charge of the force’s overall management and operations.
Assistant Director General (ADG) − The ADG supports the DG in leading and directing the force’s operations.
Inspector General (IG − The IG monitors the activities in a specific area or industry.
Deputy Inspector General (DIG) − The DIG monitors the activities within a specific division or industry.
Commandant − The Commandant manages the activities of a battalion or other team of employees.
Deputy Commandant − The Deputy Commandant supports the Commandant in leading a battalion or other body of personnel.
Assistant Commandant − The Assistant Commandant manages the operations and training of a platoon of soldiers.Roles and Responsibilities of CAPF
The Central Armed Police Forces (CAPF) in India have the following functions and responsibilities −
Internal security is maintained by CAPF members who support state police in upholding the law, battling terrorism and insurgency, and resolving intercommunal and caste problems.
The BSF, SSB, and ITBP are in charge of maintaining border security along India’s land borders with its neighbors and combating transnational crimes, including smuggling and illegal immigration.
The CISF offers security for the private sector, which includes industrial facilities, IT firms, and educational institutions, as well as critical infrastructure including airports, seaports, and significant government buildings.
Members of the CAPF are equipped to conduct search-and-rescue missions in the event of landslides, floods, and earthquakes.
VIP security, which includes protection for political figures, government officials, and foreign dignitaries, is the responsibility of the CRPF and CISF.List of Central Armed Police Forces
The five Central Armed Police Forces (CAPF) of India are listed below −
Central Reserve Police Force (CRPF) − With more than 300,000 members, the CRPF is the largest CAPF force. Its major duty is to support the state police in upholding the law, quelling insurrections, and fending against terrorism. Besides handling election-related tasks, the CRPF also protects VIPs. The force is composed of specialist divisions, such as the Rapid Action Force (RAF), whose job it is to keep the peace amid riots and other forms of public unrest.
Border Security Force (BSF) − Bangladesh and Pakistan’s land borders with India are patrolled by the BSF. Furthermore, it defends important facilities like nuclear power plants and airports. India’s coastline borders must be protected by the force’s specialist Border Security Force Marine Wing.
Central Industrial Security Force (CISF) − The CISF guards vital government and commercial infrastructure, including airports, ports, and significant buildings. Also, it offers security to businesses in the private sector, such as factories, IT firms, and academic institutions.
Sashastra Seema Bal (SSB) − The SSB is in charge of policing the borders between India and Nepal and Bhutan. Its main function is to stop transnational crimes like smuggling and illegal immigration. Also, the unit aids state police in upholding peace and order in border regions.
Indian Border Police (ITBP) − The ITBP is in charge of policing India’s borders with China. Additionally, it offers security to important infrastructure, such airports and hydroelectric power facilities. The force, which has mountaineering training, is in charge of conducting relief and rescue operations during natural disasters in the Himalayan region.Criticisms and Controversies surrounding CAPF
Over the years, there have been numerous debates and criticisms about India’s Central Armed Police Forces (CAPF). Among the most pressing problems are −
There have been numerous occasions in which CAPF employees have acted without consequence and without being held accountable. Civilians now feel distrust and terror as a result of this.
While playing a critical role in upholding internal security, CAPF members frequently lack the necessary training and tools, making them unable to deal with challenging circumstances.
A high percentage of suicides and mental health problems are experienced by CAPF personnel since they are frequently stationed in isolated areas with challenging terrain, poor housing circumstances, and inadequate medical services.Conclusion
India’s Central Armed Police Forces (CAPF) are essential to preserving law and order and safeguarding internal security. CAPF soldiers are well-prepared to handle a variety of crises, from riot control and counterterrorism to disaster relief and rescue operations, thanks to their specialized training, cutting-edge equipment, and technology. Notwithstanding numerous difficulties and controversies, CAPF is still a vital part of India’s security system, and the country strongly values the contributions it makes. With continuous modernization and reform initiatives, CAPF is prepared to meet India’s security demands for years to come.FAQs
Q1. What tools and weapons does the CAPF employ?
Ans. Depending on their particular function and responsibilities, the Central Armed Police Forces (CAPF) employ a range of tools and weaponry. The CAPF frequently employs the following weapons and tools −
Q2. What challenges are faced by CAPF?
Ans. The Central Armed Police Forces (CAPF) must contend with a number of issues, such as terrorism and insurgency, border security, VIP protection, equipment and technology, hiring and training, and poor public perception.
Q3. Explain briefly the history of CAPF.
Ans. The Assam Rifles, the first CAPF unit, was created in 1835 as a paramilitary force to defend British interests in India’s northeast. A number of additional forces have been developed over time to uphold the nation’s internal security and law and order.
The Central Reserve Police Force (CRPF) was founded in 1939 and the Border Security Force (BSF) in 1965. In 1962 and 1963, respectively, the Indo-Tibetan Border Police (ITBP) and Sashastra Seema Bal (SSB) were founded. The Central Industrial Security Force (CISF) was created in 1969 to protect crucial installations and businesses in the public sector.
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