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Operating system types and examples. The records need not be in any sequence within the file and they need not be in adjacent locations on the storage medium. Each user has at least one separate program in memory. Which of the following statements about an operating system is FALSE. A file system is normally organized into directories for easy navigation and usage. A time-shared operating system uses the concept of CPU scheduling and multiprogramming to provide each user with a small portion of a time-shared CPU. In most cases, the OS is provided on a chip that is incorporated into the actual device.
As user accesses the program, the virus starts getting embedded in other files/ programs and can make system unusable for user. Therefore, option C is appropriate. Shell − An interface to kernel, hiding complexity of kernel's functions from users. It can also be implemented in a segmentation system. This includes a list of I/O devices allocated to the process. Solved] Which of the following statements is TRUE about the operatin. The MMU's job is to translate virtual addresses into physical addresses.
As the OS recognizes and identifies hardware, the OS will install corresponding device drivers that enable the OS and applications running on the OS to use the devices without any specific knowledge of the hardware or devices. Some popular Operating Systems include Linux Operating System, Windows Operating System, VMS, OS/400, AIX, z/OS, etc. Priorities are assigned to each queue. Which of the following statements is true about operating systems.fr. Resource Management. A File Structure should be according to a required format that the operating system can understand. A running process may become suspended if it makes an I/O request.
Answer: C is incorrect. Non-preemptive algorithms are designed so that once a process enters the running state, it cannot be preempted until it completes its allotted time, whereas the preemptive scheduling is based on priority where a scheduler may preempt a low priority running process anytime when a high priority process enters into a ready state. A file is a named collection of related information that is recorded on secondary storage such as magnetic disks, magnetic tapes and optical disks. The user-friendly Windows 95 was largely responsible for the rapid development of personal computing. If page size is 100, then the reference string is 1, 2, 6, 12, 0, 0. It is the change of ready state to running state of the process. Computers can store files on the disk (secondary storage), for long-term storage purpose. Average Wait Time: (0 + 10 + 12 + 2)/4 = 24 / 4 = 6. Which of the following statements is true about operating systems page. See how system software differs from application software. Average Wait Time: (9+2+12+11) / 4 = 8. Poor in performance as average wait time is high. D. It works as a translator between the device and the operating system and programs that use the device. For a given page size, we need to consider only the page number, not the entire address.
P0||(0 - 0) + (12 - 3) = 9|. Swapping may be necessary to improve the process mix. The device is connected directly to certain main memory locations so that I/O device can transfer block of data to/from memory without going through CPU. A 32-bit processor is not capable of running a 64-bit OS or 64-bit software. External fragmentation can be reduced by compaction or shuffle memory contents to place all free memory together in one large block. Asynchronous I/O − I/O proceeds concurrently with CPU execution. Today, the operating system provides a comprehensive platform that identifies, configures and manages a range of hardware, including processors; memory devices and memory management; chipsets; storage; networking; port communication, such as Video Graphics Array (VGA), High-Definition Multimedia Interface (HDMI) and Universal Serial Bus (USB); and subsystem interfaces, such as Peripheral Component Interconnect Express (PCIe). Round Robin Scheduling. Which of the following statements is true about operating systems pdf. The network is small, and each user manages their own security. Direct Memory Access (DMA) means CPU grants I/O module authority to read from or write to memory without involvement. Such operating systems allow more than one process to be loaded into the executable memory at a time and the loaded process shares the CPU using time multiplexing. On page fault, select a page to be replaced.
Now you need to edit the image for customization of a few workstations. Program Compatibility is included with various versions of Windows to configure programs to believe that they are running with an older version of Windows. From your A+ test preparation, you know that you are supposed to stop and restart the print spooler. When a computing device must interact with the real world within constant and repeatable time constraints, the device manufacturer may opt to use a real-time operating system (RTOS). Write the new page in the frame of free pool, mark the page table and restart the process. The formula to calculate residual risk is (inherent risk) x (control risk) where inherent risk is (threats vulnerability). Batch processing is a technique in which an Operating System collects the programs and data together in a batch before processing starts. Each file carries a list of links to disk blocks. Recent flashcard sets. Solved] Which of the following statements is always true about the... | Course Hero. The operating system maintains a segment map table for every process and a list of free memory blocks along with segment numbers, their size and corresponding memory locations in main memory. Problem of reliability.
The OS should run quickly, not crash, and handle all errors gracefully in order to continue operating in all circumstances. Let us assume that the user process is of size 2048KB and on a standard hard disk where swapping will take place has a data transfer rate around 1 MB per second. These shares can differ slightly based on which OS is running, but they end with a dollar sign ($) to make them hidden. Network password − Some commercial applications send one-time passwords to user on registered mobile/ email which is required to be entered prior to login. Lack of interaction between the user and the job.
They want to send you a text to see what you've been up to, and know it'd be a nice thing to do as a friend, but then they start thinking about how they'd word the message. During my youth, she allowed me to get my own phone line so that my chatty preteen friends wouldn't interrupt her conversation while she'd gab the afternoon away—always multitasking as she washed dishes, smoked cigarettes, and cooked our dinner. I always believed that it was showing honest desire. Second, this ploy can backfire. Falling in love with someone only for it not to be reciprocated. She received her MSW (Masters of Social Work) from the University of Pennsylvania and a BA in Sociology/Health from the University of Florida. If a friend doesn't reach out much, it's not always a sign that something is wrong. When you have been fighting with a friend, knowing what to say to mend a friendship can be difficult. She told me that perhaps the first step is to acknowledge what it was. Or they may not engage at all. When we no longer use our iPhones to talk to each other, an entirely new list of problems arises: Do you pre-text before a call? They can help in a crisis situation, but they are also there to listen if you just need to talk and they can help you find resources in your area.
Check out this video for more tips on reading body language: #3 They don't ask about you. Instead, spend lots of time, and then none for a while, then more again, and flirt while you are there. Clearly ask your friend to forgive you. Since, texting has turned into our primary means of communication and I can easily get sucked into a half-hour conversation filled with silly gifs and photos of cats. The only exception applies to members you've blocked and those who've blocked you. That member's settings and chat status will determine how and where he receives that message. What you can do if a friend doesn't initiate contact to chat very much. Small steps like getting enough sleep, getting some exercise, and spending time on activities you enjoy are good for everyone. 5Listen to her attentively. He's neither friend nor enemy.
You're not as close to your friend as you think you are. The first two minutes of a phone conversation with someone who's not your own mother feel awkward. Youth in BC () and the Kids Help Phone () are two good options. Already has an account? "Thanks to this, I have a boyfriend and I am happy. If you know on a logical level that everything is fine, but your friendship insecurities are still strong, you might want to work on them. 🤯 Our secret likability strategy for introverts.
Or, "Would you like to go out with me? " They just don't get as antsy to reestablish contact if they haven't seen someone for a while. If you aren't comfortable talking with someone at school, there are also phone lines for young people who are looking for help. You can also find events and courses through local mental health organizations, schools, and campuses. Learning to read the body language of rejection is just as important in your friendships as in the dating world. Call 811 to talk to a registered nurse or visit. Not a Friend - What Do I Call Her As? It's easy to think just saying I'm sorry is enough. If she can do something herself, admire her ability openly rather than suggest you could do it better. And the seemingly antiquated phone call, which I share on occasion with a handful of girlfriends that I've known since before I started menstruating—and, of course, my mom. I kicked off the experiment with a call to my best friend, Jona, of 33 years. 1Invite her to parties. A family doctor or nurse practitioner is often the first person someone sees for mental health concerns.
8] X Research source Go to source. Carolyn Luck has developed an extensive technical background in social media, online marketing, event planning, business development and small business management while serving as editor of "iMarketing Magazine. " They're also a great place to get practical advice and suggestions you might not have considered. They are trained to help in crises and emergency, but they can also offer advice and community resources. If she says she's not interested, respect that. Keep in mind, that your hurt friend may have a totally unrealistic solution to the problem.
Many times, your friend will have an idea of what they'd like you to do. It just slips their mind because they feel like they've got so much else on their plate. Be patient, and keep trying to be a good friend, even if he or she doesn't want to respond. Filtering preferences may make it a bit tricky to find non-friends' messages. Message: How to contact you: You can leave your Email Address/Discord ID, so that the uploader can reply to your message. But it's nice to look your best anyway, as it increases your confidence too. Show your friend you are willing to work through the difficult times of misunderstandings and hurt feelings. 💬 The #1 trick to never running out of things to say. If you are the one who is constantly reaching out (i. e., you always text or call first) and they are not reciprocating your efforts, this could be a signal that you are in a one-sided friendship. Or are you sorry because you can see how you hurt your friend? A true friend will give you his honest opinion, and he may be able to tell you if he thinks she likes you, or if she just sees you as a friend.
This could be an indication that you may be the only guy she has feelings for. If your friend is finding it hard to take care of daily tasks, you can ask if they need any help. Have you seen signs of flirting or wanting to be close all the time? Visit to learn more about supporting a loved one, learn more about mental health, mental illnesses and substances, take a screening self-test and find resources in BC. You've unintentionally trained them to expect you to always initiate contact. Good ones to remember include her birthday, siblings, phone number, favourite food, favourite colors, hobbies, ambition and things that she has already told you. It is a difficult conversation to have, but honesty is one of the things that repairs and strengthens friendships. Mistakes made on both sides. If you want, you can send texts asking her how she is, etc, but don't call unless you have a reason, or if you say "Sorry, I just really wanted to have a chat with you. Friends who are genuinely excited to know you will probably reach out to spend time together and initiate hangouts equally.
They might: - Stop putting effort into your friendship.