You have a server that uses SCSI hard disks, and all of the hard disks show up in the controller BIOS. You are told to install an OS on the server, but it does not recognize the hard drive(s). What is the most likely cause?

You have a server that uses SCSI hard disks, and all of the hard disks show up in the controller BIOS. You are told to install an OS on the server, but it does not recognize the hard drive(s). What is the most likely cause?

• Hard drives contain bad sectors
• Hard drives are not connected
• SCSI controller driver missing from disk
• OS is wrong for your CPU architecture

EXPLANATION

Install the RAID driver using the F6 installation method

To install the Intel® Rapid Storage Technology (Intel® RST) driver during operating system setup, follow these steps:

1. Press F6 when prompted by the message: Press F6 if you need to install a third party SCSI or RAID driver.
   The message displays during text-mode phase at the beginning of Windows XP* setup.
    

   Note	Nothing happens right after pressing F6. Setup is still loading drivers. Watch for the prompt to load support for mass storage devices.

   
    
2. Press S to Specify Additional Device.
3. Insert the F6 driver disk when prompted by the message: Please insert the disk labeled Manufacturer-supplied hardware support disk into Drive A:
   The disk includes the following files: IAAHCI.INF, IAAHCI.CAT, IASTOR.INF, IASTOR.CAT, IASTOR.SYS, and TXTSETUP.OEM.
    

   Note	Use the Updated: name change to Intel® Rapid Storage Technology F6 Driver Disks download to create a disk with the required files. If you don't have a floppy drive on your system, use a USB floppy drive or create a slipstream version of the operating system.

   
    
4. Press Enter.
5. Use the up and down arrow keys to select your controller from the list of available controllers.
6. Press Enter to confirm your controller and continue.
   The drivers are now installed. Leave the disk in the drive as Windows setup copies the files from the disk to the Windows installation folders. When the copy process is complete, remove the disk. Windows setup is ready to reboot.
7. Create a partition and file system on the RAID volume in the same way you would on any physical disk.

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What does VPN stand for?

What does VPN stand for?

• Virtual Private Network
• Very Private Network
• Virtual Private Net
• Virtual Protected Network 

EXPLANATION

 Virtual private network

A virtual private network extends a private network across a public network, and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Applications running across a VPN may therefore benefit from the functionality, security, and management of the private network.

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What is the name of the first Computer Network?

What is the name of the first Computer Network?

• SkyNet
• MSN
• World Wide Web
• ARPANET

EXPLANATION

The first-ever computer-to-computer link was established on ARPANET (Advanced Research Projects Agency Network), the precursor to the Internet, on October 29, 1969. Originally funded by ARPA (Advanced Research Projects Agency), now DARPA, within the United States Department of Defense, ARPANET was to be used for projects at universities and research laboratories in the US.

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In Java programming, which of the following should you use when you want to access the same resource from a group of threads?

In Java programming, which of the following should you use when you want to access the same resource from a group of threads?

• Volatile keyword
• Resource interface
• Extending thread class
• Runnable interface

EXPLANATION

There is no difference. It all depends on the need and requirements. Let me explain this to you with an example.
Java doesn’t support multiple inheritance, which means you can only extend (inherit) one class so once you extend the Thread class you cannot extend or inherit another class in Java. As per object oriented programing(OOPs), the
whole purpose of inheritance is to add new functionality, modifying or improving behaviors by overriding methods of parent class. If we are not making any modification on Thread then using Runnable interface should be your choice instead of extending Thread class. There are few more things to discuss regarding this. I will cover them in detail in a separate post. I hope this makes sense now.

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What was the speed of the first commercial CPU?

What was the speed of the first commercial CPU?

• 1 GHz
• 100 kHz
• 2 MHz
• 5 Hz 

EXPLANATION

The initial clock speed of 4004 is 108 kHz, while the maximum clock speed is 740 kHz. Memory bus architecture is of the Harvard type (The Harvard architecture is a computer architecture with physically separate computer storage and signal pathways for instructions and data. The term originated from the Harvard Mark I relay-based computer, which stored instructions on punched tape and data in electromechanical counters). The 4004 used 4-bit bus for transferring, 12-bit addresses, 8-bit instructions and 4-bit data word.

Computer processor history

Year	Event
2002	Intel released the Celeron 1.3 GHz with a 100 MHz bus and 256 kB of level 2 cache.
2003	Intel Pentium M was introduced in March 2003.
2003	AMD released the first single-core Opteron processors, with speeds of 1.4 GHz to 2.4 GHz and 1024 KB L2 cache, on April 22, 2003.

 

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Who invented the Internet?

Who invented the Internet?

• Leonard Kleinrock
• Al Gore
• Robert Taylor
• Lawrence Roberts 

 

EXPLANATION

The history of the Internet begins with the development of electronic computers in the 1950s. Initial concepts of wide area networking originated in several computer science laboratories in the United States, United Kingdom, and France.^[1] The U.S. Department of Defense awarded contracts as early as the 1960s, including for the development of the ARPANET project,
directed by Robert Taylor and managed by Lawrence Roberts. The first message was sent over the ARPANET in 1969 from computer science Professor Leonard Kleinrock's laboratory at University of California, Los Angeles (UCLA) to the second network node at Stanford Research Institute (SRI). 

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In PowerShell, all variable names begin with which character?

In PowerShell, all variable names begin with which character?

• *
• %
• #
• $ 

EXPLANATION

In PowerShell, variable names start with the $ character. You can assign a value to a variable using the assignment operator, which is the = character. You can create a variable by simply assigning it a value. For example, the command

$myName = "Ferb"

creates a variable named $myName and assigns it a string value. The double quotes (" ") indicate that a string value is being assigned to the variable.
As I mentioned previously, PowerShell variables are really objects. In simple terms, objects can contain data (properties) and operations you can perform on the data (methods). In this example, the $myName variable is really a String object. As with other objects, the String object has both properties and methods. For example, the Length property of a String object tells you the number of characters in the string, and the ToUpper method gives you a copy of the string converted to uppercase. You can access both properties and methods using a dot (.) after the variable name. Properties don't use parentheses ( ), but methods do. For example, the command

$myName.Length

returns a value of 4 because the variable's value (Ferb) is four characters long. The command

$myName.ToUpper()

returns FERB.

 

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