Show
Terms in this set (20)Which of the following RAID versions offers the least amount of performance degradation when a disk in the array fails? A RAID 1 RAID 1 is known as mirroring. If one drive fails, the other will still function and there will be no downtime and no degraded performance. All the rest of the answers are striping-based and therefore have either downtime or degraded performance associated with them. RAID 5 is the second best option because in many scenarios it will have zero downtime and little degraded performance. RAID 0 will not recover from a failure; it is not fault tolerant. Question 2 :Which of the following can facilitate a full recovery within minutes? A Hot site A hot site can facilitate a full recovery of communications software and equipment within minutes. Warm and cold sites cannot facilitate a full recovery but may have some of the options necessary to continue business. Reestablishing a mirror will not necessarily implement a full recovery of data communications or equipment. What device should be used to ensure that a server does not shut down when there is a power outage? A UPS A UPS (uninterruptible power supply) ensures that a computer will keep running even if a power outage occurs. A backup generator can also be used, but it does not guarantee 100% uptime, because there might be a delay between when the power outage occurs and when the generator comes online. RAID 1 has to do with the fault tolerance of data. Redundant NICs (network interface cards, also known as network adapters) are used on servers in the case that one of them fails. Hot sites are completely different places that a company can inhabit. it does not ensure that the original server will not shut down during a power outage. Which of the following options protects computer equipment against surges, spikes, sags, brownouts, and blackouts? A UPS A UPS (uninterruptible power supply) protects computer equipment against surges, spikes, sags, brownouts, and blackouts. Power strips, unlike surge protectors, do not protect against surges. Critical equipment should always be able to get power. What is the correct order of devices that your critical equipment should draw power from? A Line conditioner, UPS battery, generator The line conditioner is constantly serving critical equipment with clean power. It should be first and should always be on. The UPS battery should kick in only if there is a power outage. Finally, the generator should kick in only when the UPS battery is about to run out of power. Often, the line conditioner and UPS battery will be the same device. However, the line conditioner function will always be used, but the battery comes into play only when there is a power outage, or brownout. Your company has six web servers. You are implementing load balancing. What is this an example of? A Redundant servers Load balancing is a method used when you have redundant servers. In this case, the six web servers will serve data equally to users. The UPS is an uninterruptible power supply, and RAID is the redundant array of inexpensive disks. A warm site is a secondary site that a company can use if a disaster occurs; a warm site can be up and running within a few hours or a day. Your company has a fiber-optic connection to the Internet. Which of the following can enable your network to remain operational even if the fiber-optic line fails? A Redundant ISP A secondary ISP enables the network to remain operational and still gain Internet access even if the fiber-optic connection (or whatever connection) fails. This generally means that there will be a second ISP and a secondary physical connection to the Internet. Redundant network adapters are used on servers so that the server can have a higher percentage of uptime. RAID 5 is used for redundancy of data and spreads the data over three or more disks. A UPS is used in the case of a power outage. Michael's company has a single web server that is connected to three other distribution servers. What is the greatest risk involved in this scenario? A Single point of failure The greatest risk involved in this scenario is that the single web server is a single point of failure regardless that it is connected to three other distribution servers. If the web server goes down or is compromised, no one can access the company's website. A Fraggle is a type of denial-of-service attack. Although denial-of-service attacks are a risk to web servers, they are not the greatest risk in this particular scenario. A company should implement as much redundancy as possible. Question 9 :Which of the following uses multiple computers to share work? A Load balancing Load balancing uses multiple computers to share work, for example, in a load-balancing cluster configuration. RAID uses multiple hard drives to increase speed or create fault tolerance. VPN concentrators allow for remote access of multiple employees over the Internet. Switching (in its simplest form) is the moving of data across the LAN. You have been tasked with increasing the level of server fault tolerance. You have been provided an inexpensive disk and given a tight budget to perform the task. Which of the following should you implement to ensure that servers' data can withstand hardware failure? A RAID A redundant array of independent disks or inexpensive disks (RAID) should be employed; specifically a fault-tolerant version of RAID (1, 5, 6, and so on). This will ensure that data will still be accessible if one drive fails. Load balancing uses multiple computers to share a load of processing data—often in the form of CPU and RAM collectives—but it does not ensure that data will be accessible in the case of a failure. A cold site is not fault tolerant because it takes at least a day or two to get it up and running. Towers of Hanoi is a tape backup schedule, and as such is not fault tolerant either. Which of the following provides for the best application availability and can be easily expanded as an organization's demand grows? A Load balancing Load balancing is the best option for application availability and expansion. You can cluster multiple servers together to make a more powerful supercomputer of sorts—one that can handle more and more simultaneous access requests. RAID 6 is meant more for data files, not applications. It may or may not be expandable depending on the system used. Multi-CPU motherboards are used in servers and power workstations, but are internal to one system. The CPUs are indeed used together, but will not help with expandability, unless used in a load-balancing scenario. Which of the following tape backup methods enables daily backups, weekly full backups, and monthly full backups? A Grandfather-father-son The grandfather-father-son (GFS) backup scheme generally uses daily backups (the son), weekly backups (the father), and monthly backups (the grandfather). The Towers of Hanoi is a more complex strategy based on a puzzle. Incremental backups are simply one-time backups that back up all data that has changed since the last incremental backup. These might be used as the son in a GFS scheme. Differential backups back up everything since the last full backup. A snapshot is a backup type, not a method; it is primarily designed to image systems. Which of the following would not be considered part of a disaster recovery plan? A Patch management software Patching a system is part of the normal maintenance of a computer. In the case of a disaster to a particular computer, the computer's OS and latest service pack would have to be reinstalled. The same would be true in the case of a disaster to a larger area, like the building. Hot sites, backing up computers, and tape backup are all components of a disaster recovery plan. Which of the following factors should you consider when evaluating assets to a company? (Select the two best answers.) A Their value to the company, Their replacement cost When evaluating assets to a company, it is important to know the replacement cost of those assets and the value of the assets to the company. If the assets were lost or stolen, the salvage value is not important, and although you may want to know where the assets were purchased from, it is not one of the best answers. You are using the following backup scheme: A full backup is made every Friday night at 6 p.m., and differential backups are made every other night at 6 p.m. Your database server fails on a Thursday afternoon at 4 p.m. How many tapes will you need to restore the database server? A Two You need two tapes to restore the database server—the full backup tape made on Friday and the differential backup tape made on the following Wednesday. Only the last differential tape is needed. When restoring the database server, the technician must remember to start with the full backup tape. Of the following, what is the worst place to store a backup tape? A Near a power line Backup tapes should be kept away from power sources, including power lines, CRT monitors, speakers, and so on. And the admin should keep backup tapes away from sources that might emit EMI. LCD screens, servers, and fiber-optic cables have low EMI emissions. What is the best way to test the integrity of a company's backed up data? A Restore part of the backup The best way to test the integrity of backed up data is to restore part of that backup. Conducting another backup will tell you if the backup procedure is working properly, and if isn't, after testing the integrity of the backup and after the restore, a person might need to use software to recover deleted files. It's always important to review written procedures and amend them if need be. Which action should be taken to protect against a complete disaster in the case that a primary company's site is permanently lost? A Back up all data to tape, and store those tapes at a sister site in another city. In the case that a building's primary site is lost, data should be backed up to tape stored at a sister site in another city. Storing information across the street might not be good enough, especially if the area has to be evacuated. Company information should never be stored at an employee's home. And of course if the data were stored in the primary building's basement and there were a complete disaster at the primary site, that data would also be lost. Of the following backup types, which describes the backup of files that have changed since the last full or incremental backup? A Incremental An incremental backup backs up only the files that have changed since the last incremental or full backup. Generally it is used as a daily backup. Differential backups are meant to be used to back up files that have changed since the last full backup. A full backup backs up all files in a particular folder or drive, depending on what has been selected; this is regardless of any previous differential or incremental backups. Copies of data can be made, but they will not affect backup rotations that include incremental, differential, and full backups. Which of the following defines a business goal for system restoration and acceptable data loss? A RPO An RPO (recovery point objective) defines acceptable data loss. A warm site is a secondary site that will have computers and phones ready for users, but data and services need to be configured and loaded before work can commence. MTBF is the mean time between failure, which defines the average number of failures per million hours, and is usually a number derived from multiple customers of a product. MTTR is the mean time to repair. Both of these are more similar to RTO as opposed to RPO. Sets with similar termsChapter 15 Quiz20 terms thechuckster4 CompTIA Server + SK0-004 Chap 920 terms stegerdude Chapter 9 "Preparing for Business Continuity"55 terms Hetzel_Hernandez Other sets by this creatorIntro to Security - Ch. 1821 terms Ylera123a Intro to Sec - Ch. 1720 terms Ylera123a Intro to Sec - Ch.1525 terms Ylera123a Intro to Sec - Ch. 1432 terms Ylera123a Verified questions
COMPUTER SCIENCE When an object is falling because of gravity, the following formula can be used to determine the distance the object falls in a specific time period: $$ d = 1 / 2 g t ^ { 2 } $$ The variables in the formula are as follows: d is the distance in meters, g is 9.8, and t is the amount of time, in seconds, that the object has been falling. Write a function named falling_distance that accepts an object’s falling time (in seconds) as an argument. The function should return the distance, in meters, that the object has fallen during that time interval. Write a program that calls the function in a loop that passes the values 1 through 10 as arguments and displays the return value. Verified answer
COMPUTER SCIENCE Write a program that plays a word game with the user. The program should ask the user to enter the following: - His or her name - His or her age - The name of a city - The name of a college - A profession - A type of animal - A pet’s name After the user has entered these items, the program should display the following story, inserting the user’s input into the appropriate locations: There once was a person named NAME who lived in CITY . At the age of AGE, NAME went to college at COLLEGE. NAME graduated and went to work as a PROFESSION. Then, NAME adopted a(n) ANIMAL named PETNAME. They both lived happily ever after! Verified answer
COMPUTER SCIENCE A(n) _______ template works with a specific data type. Verified answer
COMPUTER SCIENCE T F The average number of comparisons performed by the linear search on an array of N elements is N/2 (assuming the search values are consistently found). Verified answer Recommended textbook solutions Introduction to the Theory of Computation3rd EditionMichael Sipser 389 solutions
Computer Organization and Design MIPS Edition: The Hardware/Software Interface5th EditionDavid A. Patterson, John L. Hennessy 220 solutions
Engineering Electromagnetics8th EditionJohn Buck, William Hayt 483 solutions Introduction to Algorithms3rd EditionCharles E. Leiserson, Clifford Stein, Ronald L. Rivest, Thomas H. Cormen 726 solutions Other Quizlet setsPercent, Ratio, Proportion, and Dimensional Analys…76 terms marian_naig Ihmisen tuottamia hormoneja21 terms hillaiina Regulation - Individual Taxation34 terms bee-eaglePLUS Ethics Terms55 terms danimclellan Related questionsQUESTION Ciphertext is the scrambled and unreadable output of encryption. (T/F) 15 answers QUESTION Manage logins, resetting passwords, GRANT, DENY and REVOKE server and database level permissions 3 answers QUESTION Employees are not deterred by the potential loss of certification or professional accreditation resulting from a breach of a code of conduct as this loss has no effect on employees' marketability and earning power. 4 answers QUESTION
Which of following action(s) must an organization take to preserve the confidentiality of sensitive information? 8 answers Which backup type only backs up files that have changed since the last run?A differential backup backs up only the files that changed since the last full back.
Which backup type only backs up files that have changed since the last run coursera?Another efficient way to backup changing data is to perform regular incremental backups. While a differential backup backs files that have been changed or created, and incremental backup is when only the data that's changed in files is backed up.
Which of the following backup types backs up anything that has changed since the last backup of any type quizlet?Incremental backups are simply one-time backups that back up all data that has changed since the last incremental backup. These might be used as the son in a GFS scheme. Differential backups back up everything since the last full backup.
What kind of backup plan backs up files that have been changed since the last full backup in other words cumulatively )?A differential backup is a cumulative backup of all files changed since the last backup.
|
Which backup type only backs up files that have changed since the last run quizlet?
zusammenhängende Posts
Urheberrechte © © 2024 defrojeostern Inc.
