Intro To PC Final Exam

Power supplies are rated by the maximum power (in watts) that they can provide. It is important to keep in mind that the power supply must produce at least enough energy to operate all the components of the system at the same time. During the initial startup of the computer, many components require additional power to get going.

The Pentium D is the correct answer because it was the first Intel desktop CPU to feature two CPU's in the same package, which is known as dual-core. This means that the Pentium D processor had two separate processing units within a single chip, allowing for improved multitasking and overall performance compared to single-core processors.

The CPU, or Central Processing Unit, is the main component responsible for executing instructions and performing calculations in a computer. It is often referred to as the "brain" of the computer and generates a significant amount of heat during operation. The CPU is equipped with multiple cores and a high clock speed, allowing it to handle complex tasks efficiently. Due to its high power consumption and heat generation, proper cooling mechanisms such as fans or liquid cooling systems are necessary to prevent overheating and ensure the CPU operates optimally.

Double Data Rate SDRAM, also known as DDR SDRAM, is a newer type of SDRAM that transfers data at double the speed of regular SDRAM. This means that it can provide faster and more efficient data transfer, resulting in improved performance for computer systems. DDR SDRAM has become widely used in modern computing devices due to its enhanced speed and reliability compared to traditional SDRAM.

SO-DIMMs, or Small Outline Dual In-Line Memory Modules, are specifically designed for use in notebook or laptop computers. They are physically smaller than standard DIMMs but have similar electrical characteristics. SO-DIMMs are available in both EDO (Extended Data Output) and SDRAM (Synchronous Dynamic Random Access Memory) types, making them compatible with a wide range of computer systems.

The biggest technical difference between Windows and MS-DOS is the Registry. The Registry is a database that keeps track of hardware and software configuration and setup information.

The Tile view is the default but is difficult to use if you are concerned with file sizes, the dates they were modified, or if you have a list of files that could be sorted for easier viewing. We recommend switching to the Detailed view.

ROM is generally used to describe any memory that does not lose data when the power is removed. Its opposite, RAM, loses data when power is removed. ROM is the physical memory package, usually a large IC on the motherboard.

The system partition contains information that points to the location of the operating system. In DOS and Windows 95/98, that file was IO.SYS. In Windows NT/2000/XP, that file is NTLDR. In earlier operating systems, the key files were IO.SYS and COMMAND.COM. In Windows NT, 2000, and XP, NTLDR is the key file.

Microsoft recommends that users only use signed drivers. Signed drivers have undergone a verification process by Microsoft and come with a special Windows logo indicating that they are designed specifically for Windows. These drivers are considered to be more reliable and secure compared to unsigned drivers, as they have been tested and approved by Microsoft.

The login and password are used as a means to verify the identity of the user and ensure that they are the intended user and not an imposter. This process of verifying the user's identity is called authentication.

A disk image is a copy of the entire system partition that is stored on a CD or another hard drive. It is an exact duplicate of the original drive, including all files, folders, and settings. This approach requires some initial effort to create the disk image, but it allows for quick restoration of the system in case of any issues or failures.

With SATA drives, you connect a single drive to a port on the motherboard, and that's it. SATA (Serial Advanced Technology Attachment) is a type of interface used to connect storage devices, such as hard drives and solid-state drives, to the motherboard of a computer. It is a simple and straightforward method of connecting a drive, as it only requires plugging in a single cable to the SATA port on the motherboard. SATA drives have become the standard for most modern computers due to their ease of use and faster data transfer speeds compared to older interfaces like IDE.

The answer 4.7, 9.4, 8.5, 17 represents the maximum capacity in gigabytes (GB) for each type of DVD mentioned in the table. The single-layer, single-sided DVD has a capacity of 4.7 GB, the single-layer, double-sided DVD has a capacity of 9.4 GB, the dual-layer, single-sided DVD has a capacity of 8.5 GB, and the double-layer, double-sided DVD has a capacity of 17 GB.

Each device in a computer system uses a hardware interrupt to get the attention of the CPU. Similar to a student raising their hand to get the attention of an instructor, the device "raises its hand" by sending a signal to the CPU. This signal is known as a hardware interrupt, which prompts the CPU to stop its current task and handle the request from the device. By using hardware interrupts, the CPU can efficiently manage multiple devices and respond to their needs in a timely manner.

A CRT (Cathode Ray Tube) works by using an electron gun at one end of the tube that is heated and emits a stream of high-speed electrons. These electrons are then directed towards the larger end of the tube, where they hit a phosphor-coated screen, creating the images that we see on a CRT display.

LCD displays, or Liquid Crystal Displays, are known for their sharp image quality due to their ability to produce high-resolution images. They also have low power usage compared to other display technologies, making them energy-efficient. LCD displays are lightweight and have a thin profile, making them suitable for portable devices such as laptops, tablets, and smartphones.

LCD screens are expensive and difficult to manufacture due to their complexity and the large number of microscopic transistors that need to be printed onto the LCD substrate. In a standard 1,024 x 768 color laptop screen, there are more than 2 million transistors. If even a single transistor fails to operate properly, the corresponding pixel loses its sub-pixel color.

Microsoft and Intel collaborated to create the Advanced Power Management (APM) specification. This specification outlines the standards for power management between the hardware and the operating system. To enable power management on a computer, it must adhere to both the DPMS standard for monitors and the APM standard on the computer side. The APM specification provides a bios-level interface for managing power settings and optimizing energy usage.

In some peer-to-peer networks, a single machine is designated as the main storage depot. This means that this particular machine is responsible for storing and managing the majority of the network's data. Other machines in the network can access and retrieve data from this main storage depot when needed. Having a centralized storage location helps to streamline data management and ensure that important files are easily accessible to all network participants.

A client-server network is the next step-up in networking. In this type of network, one computer, known as the server, is dedicated to storing and managing account and login information, as well as files and applications. Other computers, called clients, connect to the server to access these resources. This setup allows for centralized control and management of data and resources, making it efficient and secure.

Protocols are a set of rules that define how computers communicate and understand each other. They establish the standards and procedures for data transmission, ensuring that information is exchanged accurately and efficiently between devices. By following these protocols, computers can effectively communicate over networks, enabling seamless data transfer and interoperability.

A bus network is a type of network where all devices are connected to a single linear cable. This cable, known as the bus, serves as a communication pathway for all devices on the network. Each device on the bus network can transmit data onto the bus, and all other devices can receive and interpret that data. This type of network is commonly used in small to medium-sized networks where simplicity and cost-effectiveness are important factors.

A ring network is a type of computer network where all workstations and servers are connected in a closed loop. In this network topology, each device is connected to two other devices, forming a ring-like structure. Data travels in one direction around the ring, passing through each device until it reaches its destination. This type of network is known for its simplicity and efficiency in transmitting data, as it eliminates the need for a central hub or switch.

Network Interface Cards (NICs) are hardware devices that connect a computer to a network cable system. They provide the necessary interface for the computer to send and receive data over the network. NICs are essential for establishing a connection between the computer and the network, allowing the computer to communicate with other devices and access resources on the network. Without NICs, the computer would not be able to connect to the network cable systems and participate in network communication.

Twisted-pair cable is a type of cable that is made up of two insulated strands of wire that are twisted around each other to form a pair. This twisting helps to reduce electromagnetic interference and crosstalk between the wires, making it suitable for transmitting data signals. Twisted-pair cables are commonly used in Ethernet networks and telephone systems.

Twisted-pair cable is limited to a maximum length of 100 meters. It requires a hub or a switch to connect more than two computers. UTP (Unshielded Twisted Pair) is the most popular type of cabling, despite its length limitation.

Wireless LAN technology, also known as Wi-Fi, has its limitations. One of these limitations is its limited throughput, meaning it can only handle a certain amount of data at a time. The theoretical maximum speed of the fastest wireless LAN technology currently available is 54 Mbps (megabits per second). This means that in ideal conditions, the wireless LAN can transmit data at a maximum speed of 54 Mbps.

The Electronics Industries Association/Telecommunications Industry Association (EIA/TIA) has specified several categories of twisted-pair cable. These categories are used for different purposes and not all of them are approved for data communications.

The correct answer is 802.11G. This standard operates in the same 2.4Ghz range as 802.11B and offers the same speed as 802.11A at 54Mbps. It is also backward-compatible with 802.11B, making it a popular choice among users. As of today, 802.11G is the most widely used system.

DSL (Digital Subscriber Line) is a fast, full-time connection to the internet that does not require tying up a telephone line. It can operate simultaneously with a telephone call. The speed of DSL can vary between 354 Kbps to 3000 Kbps, depending on the type of DSL and the distance from the nearest substation.

The correct answer is ICH. ICH stands for Input/Output Controller Hub and it is a part of the Intel chipset system. The ICH device is responsible for controlling the transfer of data into and out of the SATA ports. It acts as a bridge between the CPU and the SATA ports, facilitating the communication between the two and ensuring smooth data transfer.

Static electricity itself does not cause electrical damage. The damage occurs when these extremely high voltages are discharged in an uncontrolled manner, typically through a semiconductor such as an integrated circuit. Static electricity refers to the buildup of electric charges on the surface of objects. It can be generated by friction, contact, or separation of materials. While static electricity can cause discomfort or minor shocks, it is the uncontrolled discharge of this built-up charge that can potentially damage electronic components.

Increasing the memory capacity of a system is a proven method to enhance its performance. By adding more memory, the system can handle larger amounts of data and run multiple applications simultaneously without slowing down. However, when upgrading memory, it is crucial to follow certain precautions to ensure a seamless upgrade process. This may include checking compatibility with the existing hardware, ensuring proper installation techniques, and verifying the system's ability to support the increased memory capacity.

The correct answer is to change the Administrator account name or change the name of the Administrator account. This is because using the default administrator account with a common password (such as the user's first name) is a common practice among many users. Hackers are aware of this and can exploit it to gain unauthorized access to the system. By changing the name of the Administrator account, it becomes harder for hackers to guess the username and therefore adds an additional layer of security to the system.

Phishing is most often defined as the act of playing a ruse to entice you to give up personal information. Phishing scams typically involve sending fraudulent emails or messages that appear to be from reputable sources, such as banks or online services, in order to trick individuals into revealing sensitive information like passwords or credit card details. These scams often employ tactics like creating a sense of urgency or using convincing fake websites to deceive victims. It is important to be cautious and verify the authenticity of any requests for personal information to protect oneself from falling victim to phishing attacks.

Installing an optical drive is similar to installing a hard drive because both require physically connecting the drive to the computer's motherboard using cables, securing it in the appropriate drive bay, and configuring the computer's BIOS to recognize the new drive. Additionally, both types of drives store and retrieve data, although they use different methods - optical drives use lasers to read and write data on optical discs, while hard drives use magnetic storage to store data on spinning platters.

Expansion buses are used to connect devices to the motherboard and allow the flow of data between that device and other devices in the computer. These buses provide a pathway for communication and data transfer, enabling devices such as graphics cards, sound cards, and network adapters to be connected and interact with the rest of the computer system. Without expansion buses, devices would not be able to communicate with each other or with the motherboard, limiting the functionality and expandability of the computer.

PCIe (Peripheral Component Interconnect Express) uses a serial data transfer method rather than parallel. This means that data is transmitted one bit at a time, sequentially, instead of multiple bits simultaneously. This allows for faster and more efficient data transfer, as it eliminates the need for synchronization between multiple parallel data channels. PCIe also provides higher bandwidth and scalability compared to parallel interfaces, making it the preferred choice for connecting devices such as graphics cards, network cards, and storage devices to a computer's motherboard.

The best source of information to check before obtaining memory is the documentation that comes with the computer or motherboard. This documentation typically includes all the necessary information about the type of memory required, the number of modules that can be installed, and instructions on how to install them on the motherboard. Therefore, referring to the documentation is crucial to ensure compatibility and proper installation of memory.

The correct answer is peer-to-peer. In a peer-to-peer network, computers are interconnected and share resources without the need for a central server. This type of network is commonly found in small offices or homes where computers are connected directly to each other. Each computer in the network can act as both a client and a server, allowing users to share files, printers, and other resources easily.

A peer-to-peer network is a type of network where all the computers are equal and there is no central authority or hierarchy. Each computer in the network can act as both a client and a server, allowing them to share resources and communicate directly with each other. This means that no single computer has control over the others, and they can operate independently. Therefore, the statement that the key aspects of a peer-to-peer network are that no single computer is in charge of the others, and each computer is independent of the others, is true.

The correct answer is NOS, which stands for Network Operating System. This is a specialized operating system designed to manage and coordinate network resources and provide services to client devices. Common examples of NOS include Windows NT server, Windows 200x Server, Netware, and server versions of Linux.

Client-server networks are widely used in large organizations where security must be managed and many users will be connected to a network. In a client-server network, multiple clients (computers or devices) connect to a central server, which manages and controls access to resources, data, and services. This architecture allows for centralized security measures to be implemented, such as user authentication and authorization, data encryption, and firewall protection. It also enables efficient management and distribution of resources, as the server can handle multiple requests from clients simultaneously.

On older Windows 9x systems, the login screens may have an option to enter a username and password, but it is not mandatory. However, with Windows NT, 2000, XP, and Vista, both the username and password are required to be entered in order to log in.

The digital signature process is a method used to verify the authenticity and integrity of digital data. In the context of the given question, the digital signature process can be used to eliminate device drivers on the Internet that may contain malware. By using digital signatures, users can ensure that the device drivers they download and install are from trusted sources and have not been tampered with. This helps to protect their devices from malware that may be loaded along with the device drivers.

When installing Windows, the tools on the Windows installation CDs are commonly used to partition the drive. These tools allow users to divide the hard drive into separate sections, known as partitions, which can be used to organize and manage data more efficiently. By using the Windows installation CDs, users can easily access these partitioning tools and set up the desired partitions during the installation process.

The correct answer is the "family of optical drives". Optical drives, such as CD-ROMs and DVD-ROMs, are a type of storage technology that uses lasers to read and write data on optical discs. They have the advantage of being able to store large amounts of data, being cost-effective to produce, and being resistant to environmental factors.

The correct answer is the bottom part, polycarbonate layer. In optical disks such as CDs and DVDs, the disk is composed of three different parts. The bottom part refers to the lower section of the disk, while the polycarbonate layer is a material that is molded from a master disk. This layer is responsible for protecting the data stored on the disk and is transparent to allow the laser beam to read the data.

Resurfacing is a process that can reverse certain types of optical disk damage. It involves removing a thin layer from the surface of the disk, which can eliminate scratches, smudges, or other imperfections that may be causing the disk to malfunction. This process restores the disk's readability and functionality, making it usable again.