logo - 刷刷题
下载APP
【单选题】

Preparing for Computer Disasters
Fires,power surges,and floods,they’re all facts of life.We read about them in the morning paper and see them on the evening news.We sympathize with the victims and commiserate over their bad luck.We also shake our heads at the digital consequences-melted computers,system failures,destroyed data.Yet,somehow,many of us continue to live by that old mantra of denial:“It won’t happen to me.”Well,the truth is,at some point you’ll probably have to deal with at least one disaster.That’s just how it goes,and in most aspects of our lives we do something about it.We buy insurance.We stow away provisions.We even make disaster plans and run drills.But for some reason,computer disaster recovery is a blind spot for many of us.It shouldn’t be.Home computers contain some of our most important information,both business and personal,and certain our data survives a disaster should be a priority.Moreover,even the smallest disaster can be a serious disruption.Personal computers have become an integral part of the smooth-running household. We use them to communicate, shop, and do homework, and they’re even more vital to home office users. When home office computers go down, many small businesses grind to a halt. Fortunately, taking steps to recover from disasters and minimize their effects is quite straightforward. With a good offsite storage plan and the right tools, you can bounce back quickly and easily from minor computer disasters. And, should a major calamity strike, you can rest assured your data is safe.
Offsite Storage: Major Disasters
House fires and floods are among the most devastating causes of personal computer destruction. That’s why a solid offsite backup and recovery plan is essential. Although many home users faithfully back up their hard drives, many would still lose all their data should their houses flood or burn. That’s because they keep their backups in relatively close to their computers. Their backup disks might not be in the same room as their computers-tucked away in a closet or even the garage-but they’re not nearly far enough away should a serious disaster strike. So, it’s important to back up your system to a removable medium and to store it elsewhere.
There are many ways to approach offsite storage. It starts with choice of backup tools and storage medium. Disaster situations are stressful, and your recovery tools shouldn’t add to that stress. They must be dependable and intuitive, it easy to schedule regular backups and to retrieve files in a pinch. They must also be compatible with your choice of backup medium. Depending on your tools, you can back up to a variety of durable disk types--from CDs to Jaz drives to remote network servers. Although many of these storage media have high capacity, a backup tool with compression capabilities is a big plus, eliminating the inconvenience of multiple disks or large uploads.
Once you select your tools and a suitable medium, you need to find a remote place to store your backups. The options are endless. However, no matter where you choose, be sure the site is secure, easily accessible, and a good distance away from your home. You may also want to consider using an Internet-based backup service. More and more service providers are offering storage space on their servers, and uploading files to a remote location has become an attractive alternative to conventional offsite storage. Of course, before using one of these services, make certain you completely trust the service provider and its security methods. Whatever you do, schedule backups regularly and store them far away from your home.
Come What May: Handling the Garden Variety Computer Cr
Not all home computer damage results from physical disaster. Many less menacing problems can also hobble your PC or destroy your information. Systems crash, kids "rearrange" data, s inadvertently delete files. Although these s might not seem calamitous, they can have serious implications. So, once again, it’s important to be prepared. As with physical disasters, regular backups are essential. However, some of these smaller issues require a response that’s more nuanced than wholesale backup and restoration. To deal with less-than-total disaster, your tool set must be both powerful and agile.For example, when a small number of files are compromised, you may want to retrieve those files alone. Meanwhile, if just your settings are affected, you’ll want a way to roll back to your preferred setup. Yet, should your operating system fail, you’ll need a way to boot your computer and perform large-scale recovery. Computer crises come in all shapes and sizes, and your backup and recovery tools must be flexible enough to meet each challenge.
The Right Tools for the Right Job: Gearing up for Disaster
When disaster strikes, the quality of your backup tools can make the difference between utter frustration and peace of mind. Symantec understands this and offers a range of top quality backup and recovery solutions. Norton GoBack is the perfect tool for random system crashes, failed installations, and inadvertent deletions. With this powerful and convenient solution, it’s to retrieve overwritten files or to bring your system back to its pre-crash state. Norton Ghost is a time-tested home office solution. Equipped to handle full-scale backups, it’s also handy for cloning hard drives and facilitating system upgrades. A favorite choice for IT professionals, it’s the ideal tool for the burgeoning home office. You can buy Norton Ghost and Norton GoBack separately.or get them both when you purchase Norton System Works.
Life’s disasters, large and small, often catch us by surprise. However, with a little planning and the right tools, you can reduce those disasters to bumps in the road. So, don’t wait another day. Buy a good set of disaster recovery tools, set up an automatic backup schedule, and perform a dry run every now and again. Then, rest easy.
Preparing for Computer DisastersOffsite Storage: Major DisastersCome What May: Handling the Garden Variety Computer CrThe Right Tools for the Right Job: Gearing up for DisasterYou should______after selecting your tools and a suitable medium.

A.
find a distant place to store your backups
B.
bounce back quickly
C.
trust Internet-based backup service
D.
rest easy
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】假设进程A的逻辑页4与进程B的逻辑页5要共享物理页8,那么应该在进程A页表的逻辑页4和进程B页表的逻辑页5对应的物理页处分别填() A.4、5 B.5、4 C.5、8 D.8、8

A.
某操作系统采用分页存储管理方式,下图给出了进程A和进程B的页表结构。如果物理页的大小为512字节,那么进程A逻辑地址为1111(十进制)的变量存放在()号物理内存页中。假设进程A的逻辑页4与进程B的逻辑页5要共享物理页8,那么应该在进程A页表的逻辑页4和进程B页表的逻辑页5对应的物理页处分别填()。

【单选题】Passage TwoQuestions 29 to 32 are based on the passage you have just heard. Passage TwoQuestions 29 to 32 are based on the passage you have just heard.

A.
All the states have respective powers.
B.
The central government and the states share the same powers.
C.
The powers of the country are fairly divided up between states.
D.
It is the Constitution that specifies the power for the central government and the states.