Linus Operating System

General Anatomy and Physiology

Psychological

 Question 1 0 out of 1 points A “split-brain” patient is asked to stare at a spot on a screen. When a picture of an object is shown to the RIGHT of the spot, the patient can ________. Answer Selected Answer: pick the object out of a group of hidden objects using her left hand, but cannot identify it verbally Correct Answer: identify the object verbally and pick it out of a group of hidden objects using her right hand  Question 2 0 out of 1 points A central idea of functionalism is that ________. Answer Selected Answer: consciousness can be broken down into three elements Correct Answer: consciousness is a continuous ﬂow  Question 5 0 out of 1 points A group of psychologists study the diﬀerences among individuals traits such as anxiety, sociability, self-esteem, the need for achievement, and aggressiveness. They are most likely ________ psychologists. Answer Selected Answer: developme ntal Correct Answer: personality  Question 7 0 out of 1 points A teacher grading papers opens the door of the room in which she has been working and becomes aware of loud rock music coming from her son's radio. When she asks him to turn it oﬀ, he asks why she is just noticing it now when he's had it on for over 20 minutes. Which of the following psychological explanations is the LEAST plausible explanation of what occurred after she opened the door? Answer Selected Answer: The neurons involved began to ﬁre more quickly than they Correct Answer: The strength of the neural impulses in each of the ﬁring neurons increased markedly, bringing the music to her conscious awareness.  Question 9 0 out of 1 points An unintended consequence of the dominance of behavioral psychology was that psychology developed ________. Answer Selected Answer: a genetic bias Correct Answer: an environmental bias  Question 10 0 out of 1 points Antipsychotic medications help reduce schizophrenic hallucinations by ________. Answer Selected Answer: preventing the release of dopamine Correct Answer: preventing dopamine from binding to receptor sites  Question 13 0 out of 1 points Despite its dangers, a young man continues to take cocaine because of the feelings of euphoria it produces for him. This powerful arousal of his nervous system is probably due to cocaine's ability to ________. Answer Selected Answer: block the receptor sites for neurotransmitters Correct Answer: prevent neurotransmitters from being reabsorbed into the synaptic vesicles  Question 14 0 out of 1 points Each of the following is a current view discussed in your text in the controversy regarding ethics in psychological research EXCEPT some people ________. Answer Selected Answer:

SCIENCE | 102806177 | General Anatomy and Physiology | homework |  Question 1 0 out of 1 points

Linux Operating Systems – Chapter 3 Lab 1 This lab will give everyone a few examples of some different commands in Linux. We will explore some of them in more detail later in the semester. Perform the following on your Fedora VM in class. 1) First switch to a command line terminal by using Ctrl+Alt+F2 With Linux you can switch between what is known as terminals by using the ctrl-alt- Function Key. One of these terminals, usually F3, will be your GUI. The other terminals will be a CLI. 2) Type the ‘date’ command. What is displayed on the screen? The Computers set time 3) Type ‘cd /home’ and then type ls. What are the results? (just a description of what is being displayed) All that is returned is a dir with my name 4) Type ‘cd’, which if entered with no options or arguments will take you to your home directory a. Type pwd to verify your current directory location. Paste the path here: /home/zach b. From your home directory type ls. Are the results different from the previous step? Yes, instend of my surrent “Path” it is showing the subdirectories in zach c. Type ‘cd /’ and then type ‘ls’ There will be a number of directories listed. This is the root level of the file system. We will discuss in more detail later in the semester. What are 5 of the directories that are listed? 1 boot etc lib lost+found mnt opt root sbin sys usr bin dev home lib64 media null proc run srv tmp var 5) Type echo $PATH into your shell. Copy/Paste the results here: /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin 6) Type echo PATH and echo $path. What are the results? Why? It just return the text because the $ was not there to symbolize it as a variable ant also the cmd has to be in upper case not lower since it is case sensive. 7) Create a new variable that contains your ﬁrst and last name. Hippo=”Zachary Hite” 8) Use the echo command to display the contents of your new variable. What did you have to type for this to work? echo $Hippo 9) Type printenv to display all of the environmental variables on your system. 10) Use a combination of printenv and grep find out what the USERNAME variable is currently set to. What command did you enter and what are the results? (note that commands are case sensitive) printenv | grep USERNAME USERNAME=zach 11) Type clear. What does this command seem to do? IT seems to clear/reset the terminal of clutter.

IT | 556 | Linus Operating System | lab | Linux Operating Systems – Chap

OPTIMIZING HARD DRIVES Queson 1 correct Selected Answer: Windows NT ____ does not include a defragmenter command. Queson 2 correct Selected Answer: True A fragmented hard drive increases access me. Queson 3 correct Selected Answer: ParonMagic ____ lets you manage parons on a hard drive more quickly and easily than with Fdisk for Windows 9x or Disk Management for Windows NT/2000/XP. Queson 4 correct Selected Answer: a damaged boot record on a hard drive Error messages such as "Invalid media type" or "Non-DOS disk" oﬅen indicate ____. Queson 5 correct Selected Answer: True Trojan horse infestaons generally cannot replicate themselves and require human intervenon to move from one locaon to another. Queson 6 correct Selected Answer: False Diﬀerenal backups are supported by Windows 95. Queson 7 correct Selected Answer: True You should verify that your recovery plan works by praccing it before disaster occurs. Queson 8 c h e c k Selected Answer: it will be decompressed automacally In Windows 2000, when you try to read a compressed ﬁle from a compressed volume, ____. Queson 9 wrong Selected Answer: / R If you add the ____ switch to the Chkdsk command, it will repair cross-linked and lost clusters. Queson 10 correct Selected Answer: All of the above Windows ____ supports Chkdsk. Queson 11 correct Selected Answer: Norton Ulies ____ oﬀers several easy-to-use tools to prevent damage to a hard drive, recover data from a damaged hard drive, and improve system performance. Queson 12 correct Selected Answer: Lost ____ clusters are clusters that have no ﬁle in the FAT poinng to them. Queson 13 wrong Selected Answer: 0, 1 When a hard drive is new and freshly formaed, the OS writes ﬁles to the drive beginning with cluster ____. Queson 14 correct Selected Answer: chain The clusters that make up a ﬁle are together called a ____. Queson 15 correct Match each term with the correct statement below. Queson Selected Match This type of virus oﬅen hides in document ﬁles and is the most common type of virus B. macro spread by e-mail. An infestaon masquerading as a legimate program. G. Trojan horse This type of virus changes its disnguishing characteriscs as it replicates. I. polymorphic A program that spreads copies of itself throughout a network without a host program. A. worm This is a combinaon of a boot sector virus and a ﬁle virus. E. mulparte This type of virus can transform itself into a nonreplicang program to avoid detecon. F. encrypng This type of virus can hide in the program code of the Master Boot Record. H. boot sector This type of virus monitors when ﬁles are opened or closed, and when it sees that the C. stealth ﬁle it is hiding in is about to be opened, it temporarily removes itself or substutes a copy of the ﬁle that doesn't include the virus. Dormant code added to soﬅware that is triggered by a predetermined me or event. D. logic bomb Queson 16 correct Selected Answer: macro The Melissa virus is an example of a ____ virus. Queson 17 correct Selected Answer: Cross-linked ____ clusters are clusters that have more than one ﬁle poinng to them. Queson 18 correct Selected Answer: the ﬁle or folder will automacally be compressed In Windows 2000, when you place a ﬁle or folder on a compressed volume, ____. Queson 19 correct Selected Answer: False A hardware cache is faster than a soﬅware cache. Queson 20 correct Selected Answer: diﬀerenal A(n) ____ backup backs up ﬁles that have changed or been created since the last full backup. Queson 21 wrong Selected Answer: The soﬅware cache program uses system RAM to hold the cache. Which of the following is true about a soﬅware cache? Queson 22 correct Selected Answer: DriveSpace Windows 9x oﬀers its own disk compression ulity, ____. Queson 23 correct Selected Answer: SMARTDrive

IT | 556 | Linus Operating System | assessment | OPTIMIZING HARD DRIVES Queson

THE MOTHERBOARD QUIZ  Question 1 5 out of 5 points Which of the following processors uses a Socket A motherboard? Selected Answer: AMD Athlon MP  Question 2 5 out of 5 points L2 cache located directly on the same die as the processor core, making it diﬃcult to distinguish between L1 and L2 cache, is called ____. Selected Answer: ATC  Question 3 5 out of 5 points ____ speed is the speed at which the CPU operates internally. Selected Answer: Process or  Question 4 5 out of 5 points ____ speed is the speed at which data moves on a bus. Selected Answer: Bu s  Question 5 5 out of 5 points On a motherboard using Accelerated Hub Architecture, the fast end of the hub that contains the graphics and memory controller, connects to the system bus and is called the hub’s ____ Bridge. Selected Answer: Nort h  Question 6 5 out of 5 points When installing a motherboard with a Pentium 4 processor an extra power cable from the power supply is needed on top of the standard P1 power connector. This extra power connector is called the ____. Selected Answer: ATX12 V  Question 7 5 out of 5 points Cooling fans are needed to keep temperatures below the Intel maximum limit of ____ degrees Fahrenheit. Selected Answer: 18 5  Question 8 5 out of 5 points The Itanium uses the ____ instruction set. Selected Answer: EPI C  Question 9 5 out of 5 points A data path can be ____ bits wide. Selected Answer: All of the above.  Question 10 5 out of 5 points Running a motherboard or CPU at a higher speed than the manufacturer suggests is called ____ and is not recommended. Selected Answer: overclocki ng

IT | 556 | Linus Operating System | assessment | THE MOTHERBOARD QUIZ  Questio

Chapter 10 Notes 1. The process of sending print jobs from the print queue to the printer is called [blank]. D – prinng Page 428 2. You can clear a log ﬁle simply by redirecng nothing into it. True or False? True Page 445 3. When a printer is disabled, [blank]. B – the print queue accepts jobs into the print queue and holds them there unl the printer is enabled again Page 429 4. What is the name used to describe a user providing a user name and password to log in to a system? B – authorizaon Page 447 5. Which command can you use to lock a user account? C – usermod -L username Page 458 6. Which command can be used to alter the primary group associated with a given user temporarily? D – newgrp Page 461 7. Which command can be used to send a print job to the default printer named Printer1? A, C – lp -d Printer1 ﬁle, lp ﬁle Page 430 8. What is the name of the ﬁle that contains a lisng of all users on the system and their home directories? A – /etc/passwd Page 447 - 448 9. UIDs and GIDs are unique to the system and, once used, can never be reused. True or False? False Page 448 10. What is the name of the ulity used to rotate log ﬁles? C – logrotate Page 445 11. You can lock a user account by changing the default login shell to an invalid shell in /etc/passwd. True or False? True Page 458 12. When a printer is rejecng requests, [blank]. A – the print queue does not accept jobs and sends a message to the user nong that the printer is unavailable Page 428 13. When referring to the /etc/rsyslog.conf ﬁle, [blank] speciﬁes informaon from a certain area of the system, whereas [blank] is the level of importance of that informaon. D – facility, priority Page 442 14. Most log ﬁles on the system are found in which directory? C – /var/log Page 440 15. Which ﬁle contains default informaon such as UID and GID ranges and minimum password length to be used at user creaon? C – /etc/login.defs Page 454 16. What is the background process responsible for prinng on Fedora Linux? B – cupsd Page 429 17. Which command would you use to unlock a user account? C – usermod -U username Page 458 18. Along with a lisng of user accounts, the /etc/passwd ﬁle contains informaon on account expiry. True or False? True Page 450 19. You use lpstat and determine that a user named User1 has placed two large print jobs in the queue for Printer1 that have yet to start prinng. They have print job IDs of Printer1-17 and Printer1-21, respecvely. Which command would you use to remove these two jobs from the print queue? A – cancel Printer1-17 Printer1-21 Page 431 20. Which command is used to delete a user account? C – userdel username Page 459

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