Case Study: Network Security Computer networks of every company have the potential to be exposed to dangers that have the potential to do great harm. Individuals could gain access to Windows and Unix/Linux servers to exploit the company’s vulnerabilities. Computer networks are not only vulnerable to outsiders, but employees also have the opportunity to compromise the system. An unprotected network would open the door for malicious activity that could damage the company’s system, compromise company
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Discuss the geometry of hard drives. The Geometry of hard drive is organization of data on Platters 10. How many drives can be attached to one PATA cable? 2 Drives 11. How are they identified? IDE or SATA 12. Define UDMA. The UDMA interface was the fastest method used to transfer data between the computer and ATA devices until serial ATA. 13. Discuss the major features of ATA drives. ATA drives are the standard interface that connect hard disks and optical units
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What are the effects of a fragmented file system on disk performance? Even on a brand new system with plenty of RAM and high-end processors, the performance of the hard disk may be a bottleneck causing system performance issues. It takes time to load large data files into memory - issues become particularly noticeable when dealing with movies, video clips, database files or .ISO image files which may easily be several gigabytes in size. On a freshly formatted disk, these files load fairly quickly
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Name: Nikeeta Pamnani Contact Address: B2/14, Gautam Arcade, Opp. Fire brigade, Thane (e), 400603. Contact Number: 9930545017 Email-Id: nikita.pamnani03@gmail.com CAREER OBJECTIVE : To be associated with an innovative organization that strives for excellence and gives scope to apply skills to the best potential. ASSETS: An ardent worker with an open mind for improvisation. Belief in team work. Experienced
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discuss the four basic computer operations: input, processing, output, and storage 2. Define data and information 3. Explain the principle components of the computer and their use 4. Describe the use and handling of floppy disks and hard disks 5. Discuss computer software and explain the difference between system software and application software 6. Identify several types of personal computer application software 7. Discuss computer communications channels and equipment
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Installing a new hard drive requires creating partitions, formatting partitions before installing operating system. Hard drives are comprised of platters, have read/write heads on top and bottom for each platter. Since they are coated with magnetic film, which contain the bits, they should never be exposed to a magnet as it may result in data loss. Hard drives and gilded to protect their data, but floppy disks are not. The BIOS can be flashed to upgrade the system. The hard drives can attach to the
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disks provide bulk of secondary storage of modern computers ˃ Drives rotate at 60 to 200 times per second ˃ Transfer rate is rate at which data flow between drive and computer ˃ Positioning time (random-access time) is time to move disk arm to desired cylinder (seek time) and time for desired sector to rotate under the disk head (rotational latency) ˃ Head crash results from disk head making contact with the disk surface » Drive attached to computer via I/O bus ˃ Busses vary, including EIDE
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who bought the company do designing and manufacturing medium and high end cameras and this is what the company does (Pride, Hughes & Kapoor, 2003). Secondly, MiniScribe was formed in the year 1980 in Longmont. They then used to design and sell hard disk drives ad stepper motor-based. The company was doing well until when the owner known as Terry retired and sold it. Coming the year 1990,
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Latency 9 * Voltage 1.5 Seagate Barracuda ST1000DM003 1TB 7200 RPM 64MB Cache SATA 6.0 GB/s 3.5" Internal Hard Drive Bare Drive Price $64.99 * SATA 6Gb/s, 64MB Cache * High performance with Seagate AcuTrac servo technology, Seagate OptiCache technology * 2-year limited warrant SanDisk Ultra Plus SDSSDHP-128G-G25 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD) for Notebook Price $69.99 * 2.5" * 128GB * SATA III SAPPHIRE DUAL-X 100370L Radeon
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performance of the hard disk may be a bottleneck causing performance issues. When you format a hard disk the process divides the disk into sectors, the file system groups the sectors into clusters which is the smallest unit of space available for holding a single file or part of a file. If you save a file on a freshly formatted disk the information would be written in contiguous clusters and since the clusters of the file are physically adjacent to each other the components of the hard disk work very
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