Strata Practice Exam 1

Bandwidth refers to the data rate supported by a network connection or interface. It represents the maximum amount of data that can be transmitted over a network in a given amount of time. A higher bandwidth allows for faster data transfer and better performance.

Lithium-ion batteries are the most common type of laptop batteries found today. They have become popular due to their high energy density, longer lifespan, and lighter weight compared to other types of batteries. Lithium-ion batteries also have a lower self-discharge rate and do not suffer from the memory effect, making them more efficient and convenient for laptop users. Additionally, they have a higher voltage capacity and can provide a consistent power supply for longer periods of time, making them ideal for portable devices like laptops.

A shoulder surfing attack is a type of attack where an individual looks surreptitiously at the keyboard or monitor of an employee's computer. This allows the attacker to gather sensitive information such as passwords, login credentials, or confidential data. It is a form of social engineering that relies on the attacker's ability to physically observe the victim's actions. This type of attack can be easily executed in public places like coffee shops or airports, where individuals may be less cautious about protecting their screens or keyboards.

An image scanner is a device that provides input by analyzing printed text, handwriting, or an object. It uses optical character recognition (OCR) technology to convert physical documents or images into digital format. This allows the user to edit, store, or share the scanned information electronically. Unlike a webcam, which captures live video or images, an image scanner specifically focuses on converting physical documents into digital files. A packet analyzer is used for network analysis, and a BD-ROM drive is used for reading Blu-ray discs.

A solid state drive is a device that contains no moving parts and stores data in a digital format. Unlike other options such as a cartridge tape drive, floppy disk drive, or hard disk drive, a solid state drive uses flash memory to store data, making it more reliable and faster in terms of data access. This technology has become increasingly popular due to its durability, low power consumption, and faster read/write speeds, making it a preferred choice for many electronic devices such as computers and smartphones.

Adware is a type of software that displays advertisements on a user's device, regardless of whether or not the user has given consent. Unlike other software options listed, such as Trojan horse, Honeypot, and Spyware, Adware specifically focuses on generating revenue through advertising. It is designed to track user behavior and display targeted ads, often disrupting the user's browsing experience. Therefore, Adware is the correct answer to the question.

A cookie is a small piece of data that is stored on the user's computer by a website. It is used to store user preferences and information related to the website, such as login credentials, language preferences, and shopping cart contents. This allows the website to remember the user's preferences and provide a personalized experience. Cookies are commonly used in web development to enhance user experience and track user behavior on the site.

USB and PS/2 are the correct answers because these ports are commonly used to connect keyboards to a computer. USB (Universal Serial Bus) ports are the most common and widely used ports for connecting peripherals, including keyboards. PS/2 ports, on the other hand, are older and less common but still found on some computers. PS/2 ports are specifically designed for connecting keyboards and mice. DB-25 and DB-9 are not used for connecting keyboards, but rather for other purposes such as serial communication or printer connections.

Streaming media is the correct answer because it is a technology that enables users to hear and watch video clips while they are still being downloaded from a website. This eliminates the need to wait for the entire download to complete before accessing the content. Streaming media works by sending small portions of the video or audio file in a continuous stream, allowing users to start experiencing the content in real-time.

Bluetooth is the best wireless technology to use for connecting a printer and mouse to a laptop. Bluetooth is a widely supported wireless technology that allows for easy and seamless connections between devices. It has a decent range and is capable of transmitting data at a high speed, making it suitable for connecting peripherals like printers and mice to a laptop. Additionally, Bluetooth is energy-efficient, which helps to conserve battery life on both the laptop and the connected devices.

An AGP slot is specifically designed to accommodate a video card. It provides a high-speed connection between the video card and the computer's motherboard, allowing for efficient data transfer and enhanced graphics performance. Therefore, a video card is the only option that can be installed in an AGP slot, making it the correct answer.

Hibernate mode and Standby mode are both related to power management. Hibernate mode allows the computer to save the current state and power off completely, while Standby mode allows the computer to enter a low-power state where it can quickly resume operations. Both features help conserve power and extend battery life in laptops and other devices.

HDMI (High-Definition Multimedia Interface) is the correct answer because it is the only interface listed that has the ability to support both digital audio and video through a single cable. VGA (Video Graphics Array) and SVGA (Super Video Graphics Array) are analog interfaces that only support video, while DVI (Digital Visual Interface) supports only video and requires a separate audio cable. HDMI, on the other hand, is a digital interface that can transmit high-quality audio and video signals simultaneously, making it the ideal choice for connecting devices such as TVs, monitors, and audio systems.

Content filter control is used to limit access to internet contents by blocking or filtering certain websites or types of content. It allows parents to restrict their children's access to inappropriate or harmful content, ensuring a safer internet experience. This type of parental control can be set up on devices or through internet service providers, and it helps parents to control and monitor the online activities of their children.

HDMI (High-Definition Multimedia Interface) is the correct answer because it is the only option that transmits all ATSC HDTV standards and supports 8-channel digital audio. DVI (Digital Visual Interface) does not support audio, S-Video does not support HDTV standards, and SVGA (Super Video Graphics Array) does not support audio or HDTV standards.

The Energy Star rating is an international standard for energy efficient consumer products. It is a program developed by the United States Environmental Protection Agency (EPA) and the Department of Energy (DOE) that aims to promote energy efficiency and reduce greenhouse gas emissions. Products that meet the Energy Star criteria are designed to consume less energy and perform efficiently, saving consumers money and reducing their environmental impact. The Energy Star rating is recognized globally and is used to identify energy-efficient appliances, electronics, and other consumer products.

Spyware is a type of program that can collect various types of personal information, such as internet surfing habits and websites that the user has visited. Unlike malware, which is a broader term encompassing various malicious software, spyware specifically focuses on gathering personal information without the user's knowledge or consent. Honeypots are decoy systems used to lure and detect hackers, while worms are self-replicating malware that can spread across networks. Therefore, the correct answer in this case is spyware.

The most likely cause of the issue is that the printer is located at a distance of more than three feet from the laptop. Infrared connections have a limited range, typically around three feet, so if the printer is moved further away, the laptop will not be able to send print jobs to it.

The problem is that MAC filtering is blocking him. MAC filtering is a security feature that only allows devices with specific MAC addresses to connect to the network. Since the employee's new laptop is not on the approved list of MAC addresses, it is being blocked from connecting to the company wireless network.

TCP (Transmission Control Protocol) handles the reliable delivery of data. Unlike UDP (User Datagram Protocol), TCP ensures that data is delivered without errors, in the correct order, and with minimal delay. TCP achieves reliability through various mechanisms such as acknowledgment of received data, retransmission of lost packets, and flow control to prevent overwhelming the recipient. ARP (Address Resolution Protocol) is responsible for mapping IP addresses to MAC addresses, IPX (Internetwork Packet Exchange) is a network layer protocol used in Novell NetWare networks, while UDP is a connectionless protocol that does not guarantee reliable delivery.

A modem is a device that allows computers to connect to the internet by converting digital signals from the computer into analog signals that can be transmitted over telephone lines. It also performs the opposite function, converting analog signals received from the telephone lines back into digital signals that the computer can understand. This conversion process enables communication between digital devices and analog telephone lines, making it possible for data to be transmitted over long distances. Therefore, the statement "It converts digital signals into analog signals and vice versa" is true about modems.

The correct answer is 6-pin Mini-Din connector. This connector is commonly used for connecting keyboards and mice to computers. It is also known as the PS/2 port because it was originally introduced by IBM for their Personal System/2 computers. The 6-pin Mini-Din connector has a round shape and is typically color-coded, with purple for keyboards and green for mice. It has been largely replaced by USB connectors in modern computers, but some older systems may still have PS/2 ports for compatibility with legacy devices.

Solid state drives (SSDs) use either SRAM (Static Random Access Memory) or DRAM (Dynamic Random Access Memory) as their primary storage medium. SRAM and DRAM are types of volatile memory that can retain data as long as power is supplied. SSDs use these types of memory because they provide fast access times and high data transfer rates, making them ideal for storing and retrieving data quickly. Unlike traditional hard disk drives (HDDs) which use mechanical components, SSDs have no moving parts, resulting in faster read and write speeds, lower power consumption, and increased durability.

The correct answer is purple. The PS/2 keyboard connector on new motherboards is typically color-coded purple. This color coding helps users easily identify and connect their PS/2 keyboards to the appropriate port on the motherboard. The other color options listed (pink, green, and blue) are not commonly associated with the PS/2 keyboard connector.

Off Site storage refers to a location away from the computer center where document copies and backups are kept. This is done to ensure that data is protected in case of any disaster or damage to the computer center. By storing copies and backups off site, organizations can safeguard their data and easily retrieve it when needed. This practice is essential for data security and business continuity.

USB supports hot plugging, which means that you can connect and disconnect USB devices without having to restart the computer. This feature allows for easy and convenient use of USB devices. Additionally, you can connect up to 127 peripheral devices to a single USB port, making it a versatile and efficient way to connect multiple devices to a computer.

The UXGA video technology supports a maximum resolution of 1600 x 1200.

A memory card reader is used for accessing the data on Secure Digital SD card, MMC, and CompactFlash (CF). This device allows users to transfer data from these types of memory cards to a computer or other devices, making it easier to access and manage the stored information.

SMPS (Switched Mode Power Supply) and Monitor can cause great harm to one's life with lethal electric shocks. SMPS is responsible for converting and regulating the electrical power supply, and if not handled properly, it can deliver high voltage electric shocks. Similarly, a faulty or damaged monitor can also pose a risk of electric shock due to exposed wires or faulty insulation. Floppy drives and keyboards are not typically associated with delivering lethal electric shocks.

The correct answer is WPA 2. WEP (Wired Equivalent Privacy) is an outdated encryption standard that is easily hacked, so it should not be used. WPA (Wi-Fi Protected Access) is an improvement over WEP but is also vulnerable to certain attacks. TKIP (Temporal Key Integrity Protocol) is a security protocol used with WPA to enhance its security, but it is also considered less secure compared to the newer encryption standards. WPA 2 (Wi-Fi Protected Access 2) is the most secure and up-to-date encryption standard that should be implemented for wireless access at a defense contractor.

WUXGA video technology supports a maximum resolution of 1920 x 1200. This means that the technology can display images or videos with a width of 1920 pixels and a height of 1200 pixels.

A riser card is a hardware component used to extend the slots for expansion cards in a computer. It allows additional expansion cards to be connected vertically, providing more flexibility for adding peripherals or upgrading the system. This is different from the other options provided, as a riser card does not connect the computer to a network, add extra microprocessors, or provide extra memory for expansion cards.

Windows XP Professional requires a minimum of 64 Megabytes of RAM to function properly. This amount of memory is sufficient for the operating system to run basic tasks and applications. However, it is important to note that this is the minimum requirement, and for optimal performance, it is recommended to have more RAM installed.

ECC RAM, or Error Correcting Code RAM, should be selected for the new PC to ensure that errors are handled properly. ECC RAM is designed to detect and correct errors that occur during data storage and retrieval. It uses additional bits to store error correction codes, allowing it to identify and fix single-bit errors and detect multi-bit errors. This makes ECC RAM more reliable and suitable for systems that require high data integrity, such as servers or workstations used for critical tasks.

The best way to put the customer's Windows XP machine into a working state again is to use the Windows recovery console with the Windows recovery CD. This will allow the user to access advanced troubleshooting options and repair any system files or settings that may be causing the issue. Reinstalling Windows or uninstalling new software may not address the underlying problem, while using the recovery console provides a more targeted and effective solution.

After the patch was applied automatically, the users with scanners attached to their computers started experiencing issues. When checking the device manager, an exclamation point is seen next to the scanner, indicating a driver problem. Therefore, the best course of action would be to manually uninstall and reinstall the device driver. This will help troubleshoot any conflicts caused by the patch and ensure that the scanner can be accessed properly again. Reinstalling Vista or finding a Vista compatible scanner may not necessarily resolve the driver issue. Rolling back the patch could be an option, but it may not be necessary if the driver reinstallation solves the problem.

A USB host supplies power to the USB bus at a voltage of 5 volts. This is the standard voltage for USB power supply. It is important to maintain this voltage as it ensures compatibility and safe operation of USB devices. Higher voltages can cause damage to the devices, while lower voltages may not provide sufficient power for proper functioning. Therefore, 5 volts is the correct answer for the given question.

A screensaver can be used as a basic security measure because it helps to protect the privacy of the computer user. When a computer is left idle for a certain period of time, the screensaver activates and displays a moving image or pattern on the screen. This prevents unauthorized users from viewing sensitive information that may be displayed on the screen. Additionally, screensavers can be configured to require a password to exit, adding an extra layer of security to the computer.

The RoHS directive aims to restrict certain dangerous substances commonly used in electronics equipment. It stands for Restriction of Hazardous Substances and is a European Union directive that limits the use of substances such as lead, mercury, cadmium, and certain flame retardants in electronic products. This directive is implemented to protect human health and the environment from the harmful effects of these substances.

The most likely causes of a virus attack include installing an application from an unreliable source, downloading a file from an unknown website, installing a DLL file from an unreliable source, and using a floppy, a compact disk, or a pen drive from an unreliable source. These actions can expose a computer to malicious software and increase the risk of a virus infecting the system. It is important to be cautious and only download or install files from trusted sources to protect against virus attacks.

Laptops can be powered using AC power and batteries. AC power refers to the electricity supplied through a power outlet, which is commonly used when the laptop is connected to a charger. On the other hand, laptops also have built-in batteries that can store electrical energy and provide power when the laptop is not connected to an outlet. These batteries can be recharged using AC power. Therefore, both AC power and batteries are used to power a laptop.

The error message "CMOS checksum failure" indicates that there is an issue with the CMOS (Complementary Metal-Oxide-Semiconductor) settings in Andrew's computer. The CMOS battery is responsible for maintaining these settings, so if it has failed, it can cause this error. Additionally, if the CMOS chip itself has failed, it can also result in a checksum failure. Therefore, the most likely causes of this error are a failed CMOS battery and a failed CMOS chip.

If the power cable runs along with the computer network cable, it can lead to Electromagnetic Interference (EMI). EMI occurs when the electrical signals from the power cable interfere with the signals from the network cable, causing distortion or disruption in the network communication. This can result in poor network performance, data errors, or even complete network failure. It is important to keep power cables and network cables separated to minimize the risk of EMI.

BIOS needs to be updated in two conditions. Firstly, if users need to utilize new hardware features or options that are supported by the motherboard but not supported by the computer BIOS. Secondly, if the BIOS does not support new devices. In both cases, updating the BIOS is necessary to ensure compatibility and proper functioning of the hardware.

S1 sleep mode is the most power hungry mode among the given options. In S1 sleep mode, also known as "Standby" or "Suspend to RAM," the computer enters a low-power state where the CPU and other components are powered down, but the RAM remains active. This allows for a quick wake-up time as the system can resume from where it left off. However, since the RAM still requires power to maintain its data, S1 mode consumes more power compared to other sleep modes like S2, S0, or S3.

The correct answer is /o. The /o switch is used with the XCOPY command to copy the ownership and NTFS permissions of the files while copying them. This switch ensures that the copied files retain the same permissions and ownership as the original files.

Active Matrix and Passive Matrix are both types of LCD monitors. Active Matrix refers to a type of display technology that uses thin film transistors (TFTs) to control each individual pixel on the screen, resulting in faster response times and better image quality. Passive Matrix, on the other hand, uses a grid of electrodes to control the pixels, which is less expensive but can lead to slower response times and lower image quality compared to Active Matrix. X-Matrix is not a recognized type of LCD monitor. SVGA refers to a resolution standard and is not specifically a type of LCD monitor.

Shareware refers to proprietary software that is provided to users without payment on a trial basis and is often limited by any combination of functionality, availability, or convenience.

A plug-in is a software component that allows third-party developers to extend the functionality of an application. It provides an interface for developers to add new features or modify existing ones without altering the core code of the application. By creating plug-ins, developers can enhance the application's capabilities and tailor it to meet specific user needs. This enables a more customizable and flexible experience for users, as they can choose the plug-ins that best suit their requirements.

PCMCIA (Personal Computer Memory Card International Association) is the correct choice for adding a network card to the sales representative's laptop. PCMCIA cards are designed to add functionality to laptops and are commonly used for adding network adapters, modems, and other peripherals. This type of expansion card will allow the sales representative to connect to the network and perform their job effectively. MCA, PCI, and AGP are not suitable choices for adding a network card to a laptop.