Linux+ Networking Chapter 7

RAID 0 is not fault tolerant because it does not provide any redundancy or fault tolerance mechanisms. In RAID 0, the data is striped across multiple drives without any parity or mirroring. This means that if one drive fails, the entire array fails and data loss occurs. Therefore, RAID 0 is not suitable for applications that require high data availability or fault tolerance.

A SCSI-3 controller card can always accommodate more devices than a SCSI-2 controller card because SCSI-3 is an updated and improved version of SCSI-2. SCSI-3 has a higher maximum device count and supports more advanced features, such as increased data transfer rates and improved error handling. Therefore, it has the capability to connect and handle a larger number of devices compared to SCSI-2.

RAID 1 is also referred to as mirroring because it involves creating an exact copy (mirror) of data on two or more disks. This means that if one disk fails, the data can still be accessed from the other disk(s). RAID 0, RAID 4, and RAID 5 do not involve mirroring as they use different techniques for data redundancy and performance improvement.

False. Two peripheral devices cannot share and use the same Interrupt Request (IRQ) setting at the same time. Each peripheral device requires a unique IRQ setting to communicate with the computer's processor. If two devices were assigned the same IRQ, conflicts would occur, leading to system instability and malfunctioning of the devices. Therefore, it is necessary to assign different IRQ settings to each peripheral device to ensure proper functioning.

The correct answer is /var/log because the /var/log directory is commonly used to store log files in many Linux distributions. This directory contains various log files that provide information about system events, services, and applications. By accessing the log files in /var/log, you can gather important information to troubleshoot and analyze the problem you are experiencing.

The /proc filesystem is stored in RAM. This is because the /proc filesystem is a virtual filesystem that provides information about processes and system resources. It is dynamically generated and stored in memory, allowing easy access to real-time information about the system's processes and hardware. The contents of the /proc filesystem are not stored on the hard disk drive but are instead generated on the fly and reside in RAM.

The BIOS configuration settings are stored on the CMOS chip, which is maintained by a small flow of electricity. This chip retains the settings even when the computer is turned off because of the continuous power supply from a battery. The CMOS chip is responsible for storing and maintaining the BIOS settings, allowing the computer to remember various hardware and system configurations.

The default IRQ for COM 1 is 4. IRQ stands for Interrupt Request and it is used by devices to request attention from the CPU. COM 1 is a serial port used for connecting devices such as modems and mice. The default IRQ for COM 1 is 4, which means that when a device connected to COM 1 needs attention, it will send an interrupt request to the CPU on IRQ 4.

SCSI devices that use an 8-bit wide data path use a 50-pin connector. This type of connector is used to connect the SCSI device to the computer or other devices. The 50-pin connector allows for the transfer of data between the SCSI device and the computer using an 8-bit wide data path.

SCSI-1 is also known as "slow and narrow" because it refers to the first generation of the Small Computer System Interface (SCSI) technology. During this time, the data transfer rates were relatively slower compared to later versions, and the physical width of the SCSI bus was narrower, supporting only 8 bits of data transmission.

There are a total of 8 direct memory access (DMA) channels available. DMA channels allow devices to transfer data directly to and from memory without involving the CPU. These channels provide faster and more efficient data transfer, reducing the workload on the CPU. Having 8 DMA channels means that multiple devices can perform simultaneous data transfers, improving overall system performance.

The correct answer is to view the contents of the appropriate files in the /proc directory. The /proc directory in Linux contains virtual files that provide information about the system's hardware and configuration. By viewing the files in this directory, you can find the IRQ, DMA, and I/O address assignments currently made on your computer.

The default IRQ and I/O setting for LPT1 is IRQ 7 and I/O address 378-37F. This means that the printer port LPT1 is configured to use IRQ 7 for communication with the computer and the input/output address range 378-37F for data transfer.

I/O address is used to give each device a separate unique portion of physical memory to utilize. This allows devices to communicate with the CPU and access their allocated memory space without interfering with other devices. SCSI is a type of interface used for connecting storage devices, DMA (Direct Memory Access) is a method for transferring data between devices without involving the CPU, and IRQ (Interrupt Request) is used to signal the CPU that a device needs attention. None of these options directly relate to allocating separate memory portions for devices.

You should view the files "/root/install.log" and "/root/install.log.syslog" immediately after installation. These files are likely to contain the installation log information that you are looking for. The files "/proc/install.log" and "/proc/install.log.syslog" are not typically used for storing installation logs, so they would not be the correct files to view in this scenario.

Each device does not need to have a unique IRQ, DMA, and I/O address assignment. This statement is false because multiple devices can share the same IRQ, DMA, and I/O address assignments as long as they do not conflict with each other. This allows for efficient use of system resources and enables multiple devices to function properly within a computer system.

To take advantage of Plug-and-Play, three conditions must be met. Firstly, the operating system must support Plug-and-Play, meaning it has the necessary drivers and protocols to recognize and configure devices automatically. Secondly, the device to be configured must also support Plug-and-Play, meaning it has the necessary hardware and firmware to be recognized and configured by the operating system. Lastly, the BIOS (Basic Input/Output System) must support Plug-and-Play, as it is responsible for initializing hardware components during the boot process and communicating with the operating system.

Disk imaging software and a kickstart file can be used to simplify the deployment of several Linux servers in an organization. Disk imaging software allows for creating an image of a pre-configured server, which can then be replicated onto multiple servers, saving time and effort. A kickstart file is a script that automates the installation process, allowing for consistent and efficient deployment of Linux servers. An automatic software installation server and an automated boot disk are not mentioned as options for simplifying the deployment of Linux servers.

Both DMAs and IRQs have assignments that function to serve two different data path widths, 16 bit and 8 bit. They also both have one assignment that is lost to normal user usage.