Digital Forensics 1-8 CH Review
12. Large computer forensics labs should have at least ______ exits.
two
5. The plain view doctrine in computer searches is well-established law. True or False?
False look up pgs.
9. Data can't be written to the disk with a command-line tool. True or False?
False look up pgs.
16. iLook is maintained by ________________.
ILook is an all-in-one computer forensics suite originally created by Elliot Spencer and currently maintained by the U.S. Department of Treasury Internal Revenue Service Criminal Investigation Division (IRS-CI) Electronic Crimes Program. It was made avail
chapter 6
chapter 6
8. In forensic hashes, a collision occurs when ____________________.
two files have the same hash value
14. Computer forensics facilities always have windows. True or False?
False refer to pg 84
22. An image of a suspect drive can be loaded on a virtual machine. True or False?
True look up pgs
chapter 7
chapter 7
6. Digital pictures use data compression to accomplish which of the following goals? (Choose all that apply) A. Saves space on a hard drive B. Provide a crisp and clear image C. Eliminate redundant data and your D. Produce a file that can be emailed or posted on the Internet
Both A and D Most graphics file formats, including GIF and JPEG, Compress data to save disk space and reduce the files transmission time.
3. List three items that should be on an evidence custody form.
Case number, Investigating officer, Investigating Agency.
4. Zoned bit recording is how manufacturers ensure that the outer tracks store as much data as possible. True or False?
False look up pages
29. HDHost is automatically encrypted when connected to another computer. True or False?
False look up pg
20. NIST testing procedures are valid only for government agencies. True or False?
False look up pgs.
15. The chief custodian of evidence storage containers should keep several master keys. True or False
False refer to page 80,81
10. Copyright laws don't apply to web sites. True or false?
False. Anything that would normally be copyrighted through non computer means and is now being created on digital media is considered to be copyrighted, as long as the process for obtaining a copyright has been followed.
5. You should always prove the allegations made by the person who hired you. True or False?
False. Because other investigators or persons involved involved in the case might alter somethinfg in the evidence.
23. R-Studio and DiskExplorer are used primarily for computer forensics. True or False?
False. They are designed as data recovery tools but are useful in rebuilding corrupt data when forensics tools fail.
7. List two popular certification systems for computer forensics.
IACIS, HTCN, EnCE refer to pg 76
9. Why should your evidence media be write-protected?
If you just start windows without anaylizing a hard disk by writing data to the recycling bin it currupts the quality and integrity of eveidence
4. What type of compression uses an algorithm that allows viewing the graphics file without losing any portion of the data?
Lossless compression techniques reduce file size without removing data.
15. With newer Linux kernel distributions, what happens if you connect a hot-swappable device, such a USB thumb drive, containing evidence?
Newer Linux distributions automatically mount the USB device, which could alter data on it.
7. Who should have access to a secure container? a. only the primary investigator b. only the investigators in the group c. everyone on the floor d. only senior-level management
Only investigators in the group.
8. In JPEG files, what's the starting offset position for the JFIF label? A. Offset 0 B. Offset 2 C. Offset 6 D. Offset 4
PG 322 A. Offset 0
2. When you carve a graphics file, recovering the image depends on which of the following skills? a. Recovering the image from a tape backup B. Recognizing the pattern of the data content C. Recognizing the pattern of the file header content D. Recognizing the pattern of a corrupt file
Page 326 - B. Recognizing the pattern of the data content
25. How does ProDiscover Investigator encrypt the connection between the examiner's and suspect's computers?
ProDiscover provides 256-bit AES or Twofish encryption with GUID and encrypts the password on the suspect's workstation.
9. List three items that should be in an initial-response field kit.
REFER TO REVIEW PGS. Small computer toolkit, large-capacity drive, IDE ribbon cables, forensic boot media, laptop IDE 40-to-44 pin adapter, laptop or portable computer, FireWire or USB dual write-protect external bay, flashlight, digital camera or 35mm ca
17. The Windows Registry in Windows 9x consists of what two files?
System.dat and User.dat
30. List the two types of connections in HDHost..
TCP/IP and serial RS232 port
20. What name refers to labs constructed to shield EMR emissions?
TEMPEST refer to pg. 80
8. The National Cybercrime Training Partnership is available only to law enforcement. True or False?
True
18. If a company doesn't distribute a computing use policy stating an employer's right to inspect employees' computers freely, including e-mail and Web use, employees have an expectation of privacy. True or False?
True look up pgs
3. If you discover a criminal act, such as murder or child pornography, while investigating a corporate policy abuse, the case becomes a criminal investigation and should be referred to law enforcement. True or False?
True look up pgs.
14. You can lose your job for violating a company policy, even if you don't commit a crime. True or False?
True.
6. For digital evidence, an evidence bag is typically made of antistatic material. True or False?
True. refer to pg36
6. If a suspect computer is located in an area that might have toxic chemicals, you must do which of the following? (Choose all that apply.)
a. Coordinate with the HAZMAT team. c. Assume the suspect computer is contaminated. Rfer to review sheets
9. Windows 2000 can be configured to access which of these file formats? (Choose all that apply.)
a. FAT12 b. FAT16 c. FAT32 d. NTFS
5. Hashing, filtering, and file header analysis make up which function of computer forensics tools?
a. Validation and discrimination
18. List four subfunctions of reconstructing drives.
disk-to-disk copy, image-to-disk copy, partition-to-partition copy, image-to-partition copy
6. What items should your business plan include?
physical security items, such as evidence lockers; how many machines are needed; what OSs your lab commonly examines; why you need certain software; and how your lab will benefit the company (such as being able to quickly exonerate employees or discover w
1. What is the primary goal of a static acquisition?
preservation of digital evidence
11. What three items should you research before enlisting in a certification program?
requirements, cost, and acceptability in your chosen area of employment
9. Why is physical security so critical for computer forensics labs?
to maintain the chain of custody and prevent data from being lost, corrupted, or stolen
10. When you arrive at the scene, why should you extract only those items you need to acquire evidence?
to minimize how much you have to keep track of at the scene
17. What is the most critical aspect of computer evidence?
validation
7. To what does the term "silver-platter doctrine" refer?
when a civillian or corporate investigative agent delivers evidence to a law enforcement agenttheir job is to minimize risk to the company
11. When is a standard data backup tool, such as Norton Ghost, used for a computing investigation?
when the suspect computer can't be taken offline for several hours but can be shut down long enough to switch disks with a Ghost backup, allowing the investigator to take the original disk and preserve it as digital evidence
18. What is a hashing algorithm?
A program designed to create a binary or hexadecimal number that represents the uniqueness of a data set, file, or entire disk
19. Which organization has guidelines on how to operate a computer forensics lab?
ASCLD refer to pg. 72
15. When might an interview turn into an interrogation?
An interrigation is trying to get a suspect to confess. An interview is getting info from a witness. Sometimes a witness in questioning might lose their credibility and turns into a suspect
16. Putting out fires in a computer lab typically requires a _______ rated fire extinguisher.
B Refer to review sheets
14. A JPEG file uses which type of compression? A. WinZip B. Lossy C. Lzip D. Lossless
B. Lossy
18. What methods do steganography programs used to hide data and graphics files? A. Insertion B. Substitution C. Masking D. Carving
Both A and B PG 344 - Two major forms of steganography are insertion and substitution
4. List two features common with proprietary format acquisition files.
Can compress or not compress the acquisition data; can segment acquisition output files into smaller volumes, allowing them to be archived to CD or DVD; case metadata can be added to the acquisition file, eliminating the need to keep track of any addition
15. What is the purpose of maintaining a professional journal?
Can help remembering certain tasks or issues and what types of tools software or hardware you used for a particular problem.
Chapter 2
Chapter 2
Chapter 3
Chapter 3
Chapter 8
Chapter 8
13. Describe what should be videotaped or sketched at a computer crime scene.
Computers, cable connections, overview of scene—anything that might be of interest to the investigation
8. Policies can address rules for which of the following?
D. All of the above. (Refer to books Review Ques.)
7. The process of converting rot images to another format is called which of the following? A. Data conversion B. Transmogrification C. Transfiguring D. Demosaicing
D. Demosaicing
13. Bitmap (.bmp) files use which of the following types of compression? A. WinZip B. Lossy C. Lzip D. Lossless
D. Lossless
28. What is the Runtime Software utility used to acquire data over a network connection?
DiskExplorer for NTFS or DiskExplorer for FAT
13. What two tasks is an acquisitions officer responsible for at a crime scene?
Documentations of items the investigating officers collected with computer to include list of storage media, i.e. removable disk photographs of equipments and windows before they are such down.
12. List two types of computer investigations typically conducted in the corporate environment.
E-mail Abuse and Internet Abuse.
8. For employee termination cases, what types of investigations do you typically encounter?
Employee abuse of corporate assets,incidents that create a hostile enviroment, examples pornagraphy, inappropriate e-mails.
2. Computer forensics and data recovery refer to the same activities. True or False?
False
20. You should always answer questions from onlookers at a crime scene. True or False?
False
3. The ASCLD mandates the procedures established for a computer forensics lab. True or False?
False
4. During a remote acquisition of a suspect drive, RAM data is lost. True or False?
False
5. When investigating graphics files, you should convert them into one standard format. True or false?
False
18. Data collected before an attorney issues a memorandum for an attorney-client privilege case is protected under the confidential work product rule. True or False?
False refer to pg. 20
17. The U.S. ______________ maintains a manual on procedures to follow for search and seizure of computers.
IRS
5. List three common types of digital crime.
Internet Pornagraphy, Espianage, Abuse of Internet Properties.
7. What are the three rules for a forensic hash?
It can't be predicted, no two files can have the same hash value, and if the file changes, the hash value changes.
20. What is the purpose of an Affidavit?
Its a sworn statement for a judge to get a warrent if you have found facts that support the evidence of a crime.
11. Computer peripherals or attachments can contain DNA evidence. True or False?
LOOK UP PGS
25. What are the functions of a data run's field components in an MFT record?
Refer to review pg. Data runs have three components; the first declares how many bytes are required in the attribute field to store the number of bytes needed for the second and third components. The second component stores the number of clusters assigned
10. List three items that should be in your case report.
Resources needed such as tools hardware software example: deleted files email standard risk assesments
11. Why should you critique your case after it's finished?
Self evaluationfor growth and improved identity secessful decisions, how you could have improved.
26. What is the EnCase Enterprise remote access program?
ServLet
10. In FAT32, a 123 KB file uses how many sectors?
The answer is 246 sectors. 123 x 1024 bytes per KB = 125,952 total bytes in the file. 125,952 bytes / 512 sectors per cluster = 246 sectors
10. What is the advantage of using a tape backup system for forensic acquisitions of large data sets?
There is no limit to the size of data you can write to magnetic tape.
19. Why should companies appoint an authorized requester for computer investigations?
To avoid conflicts and competions between departments and limits who is authorized to request an investigation. Authorized requster
1. An employer can be held liable for e-mail harassment. True or False?
True
11. When viewing a file header, you need to include hexadecimal information to view the image. True or false?
True
12. When recovering a file with ProDiscover, your first objective is to recover cluster values. True or false?
True
9. Each type of graphics file has a unique header containing information that distinguishes it from other types of graphics files. true or false?
True
14. In NTFS, files smaller than 512 bytes are stored in the MFT. True or False?
True look up pages
15. RAM slack can contain passwords. True or False?
True look up pages
32. EnCase, FTK, SMART, and iLook treat the image file as though it were the original disk. True or False?
True look up pg
2. In the United States, if a company publishes a policy stating that it reserves the right to inspect computing assets at will, a corporate investigator can conduct covert surveillance on an employee with little cause. True or False?
True look up pg.
33. When possible, you should make two copies of evidence. True or False?
True look up pg.
1. In DOS and Windows 9.x, Io.sys is the first file loaded after the ROM bootstrap loader finds the disk. True or
True look up pgs
4. The triad of computing security includes which of the following?
Vulnerability Assesment, Intrusion Response, and Investigations.
16. What is the most important point to remember when assigned to work on an attorney-client privilege case?
When conducting an (ACP) atorney client priviledge you must keep all findings confidential.
16. In a Linux shell, the fdisk -1 command lists the suspect drive as /dev/hda1. Is the following dcfldd command correct? dcfldd if=image_file.img of=/dev/hda1
Wrong. This command reads the image_file.img file and writes it to the evidence drive's /dev/hda1 partition. The correct command is dcfldd if=/dev/hda1 of=image_file.img.
3. Explain how to identify an unknown graphics file format that your digital forensics tool doesn't recognize.
You need to examine a copy of the unknown file with a hexadecimal editor to find the hex code for the first several bytes of the file. Then you need to examine other known file types with similar or identical header values to see whether you can confirm its file type.
17. Which of the following tools can examine files created by WinZip?
a. FTK look up review sheet
23. EFS can encrypt which of the following?
a. Files, folders, and volumes refer to review pgs.
14. Which of the following techniques might be used in covert surveillance?
a. Keylogging b. Data sniffing refer to review sheets
1. Corporate investigations are typically easier than law enforcement investigations for which of the following reasons?
a. Most companies keep inventory databases of all hardware and software used.
4. As a corporate investigator, you can become an agent of law enforcement when which of the following happens? (Choose all that apply.)
a. You begin to take orders from a police detective without a warrant or subpoena. b. Your internal investigation has concluded, and you have filed a criminal complaint and turned over the evidence to law enforcement.
1. What are the five required functions for computer forensics tools?
acquisition, validation and discrimination, extraction, reconstruction, and reporting
4. The manager of a computer forensics lab is responsible for which of the following? (Choose all that apply.) a. necessary changes in lab procedures and software b. ensuring that staff members have sufficient training to do the job c. knowing the lab
all the answers refer to review sheet
2. Sectors typically contain how many bytes?
b. 512 refer to review sheet
10. Hash values are used for which of the following purposes? (Choose all that apply.)
b. Filtering known good files from potentially suspicious data d. validating change.
20. Which of the following Windows XP files contains user-specific information?
b. Ntuser.dat refer to review pgs
15. Which of the following is true of most drive-imaging tools? (Choose all that apply.)
b. They ensure that the original drive doesn't become corrupt and damage the digital evidence. c. They create a copy of the original drive. look up review sheet
11. What is the space on a drive called when a file is deleted? (Choose all that apply.)
b. Unallocated space d. Free space refer to review sheets
18. Laws and procedures for PDAs are which of the following? a. well established b. still being debated c. on the law books d. none of the above
b.) Still being established.
16. The standards for testing forensics tools are based on which criteria?
c. ISO 17025 look up review sheet
3. What two data-copying methods are used in software data acquisitions?
c. Logical and physical
5. Areal density refers to which of the following?
c. Number of bits per square inch of a disk platter refer to review sheet
chapter 4
chapter 4
24. With remote acquisitions, what problems should you be aware of?
d. All of the above refer to review sheet
19. When validating the results of a forensic analysis, you should do which of the following?
d. Do both a and b. refer to review sheet
8. List three items stored in the FAT database.
file and directory names, starting cluster numbers, file attributes, and date and time stamps
7. What does a logical acquisition collect for an investigation?
only specific files of interest to the case
15. Commingling evidence means what in a corporate setting?
sensitive corporate information being mixed with data collected as evidence
12. Why is it a good practice to make two images of a suspect drive in a critical investigation?
to ensure at least one good copy of the forensically collected data in case of any failures
17. What are the basic guidelines when working on an attorney-client privilege case?
1) memorandum 2) list of key words of interest to the investigation 3) compare hash values 4)bit stream imaging 4) documentation private legal
List two organizations mentioned in the chapter that provide computer forensics training.
1.(IACIS) International Association of Computer Investigation Specialist. 2. FLECT Federal Law Enforcement Training Center.
6. Clusters in Windows always begin numbering at what number?
2
21. What's the maximum file size when writing data to a FAT32 drive?
2 GB (a limitation of FAT file systems)
9. List two items that should appear on an internal warning banner.
A.) Access to this system and Network are Restricted B.) Use of this System and Network is for Official use Only.
1. What are some initial assessments you should make for a computing investigation?
A.) Talk to others involved in the case about the incident. B.) Has evidence already been seized by Law enforcement or security officers?
8. Of the six functions of computer forensics tools, what are the subfunctions of the Extraction function?
Data viewing, Keyword searching, Decompressing, Carving, Decrypting, and Bookmarking
14. What are some reasons that an employee might leak information to the press?
Disgruntled employee, embarrass management power struggle between corporations premature release of info on new products
31. Which computer forensics tools can connect to a suspect's remote computer and run surreptitiously?
EnCase Enterprise, ProDiscover Investigator, and ProDiscover Incident Response
6. Name two commercial tools that can make a forensic sector-by-sector duplicate of a drive to a larger drive.
EnCase, SafeBack, and SnapCopy.
12. What do you call a list of people who have had physical possession of the evidence?
Evidence of custody.
What are the neccesary componaents of a search warrant?
Exhibits (evidence) Notarized Verdict.
5. Of all the proprietary formats, which one is the unofficial standard?
Expert Witness, used by Guidance Software EnCase
1. Graphics files stored on a computer can't be recovered after they are deleted? T/F
False
10. If a visitor to your computer forensics lab is a personal friend, it's not necessary to have him or her sign the visitor's log. True or False?
False
16. A JPEG files is an example of a vector graphics. True or False?
False
34. FTK Imager can acquire data in a drive's host protected area. True or False?
False look up pg.
13. Building a forensic workstation is more expensive than purchasing one. True or False?
False look up pgs
17. Small companies rarely need investigators. True or False?
False look up pgs
14. A live acquisition is considered an accepted forensics practice. True or False?
False look up pgs.
17. A forensic workstation should always have a direct broadband connection to the Internet. True or False?
False refer to pg.84
11. A corporate investigator is considered an agent of law enforcement. True or False?
False. Refer to page 18 in book
3. Police in the United States must use procedures that adhere to which of the following? a. the Third Amendment b. the Fourth Amendment c. the First Amendment d. none of the above
Fourth Amendment
2. What are some ways to determine the resources needed for an investigation?
Identify the Risk; find out what OS to work with and which types of hardware or software and tools to use and security measures.
4. Why should you do a standard risk assessment to prepare for an investigation?
Identify the risks as in having a set amount of things that can or normally will happen who is the user what type of equipment
14. What is the disadvantage of using the Windows XP/Vista USB write-protection Registry method?
If the target drive is an external USB drive, the write-protect feature prevents data from being written to it.
16. Identify two hashing algorithms commonly used for forensic purposes.
MD5 and SHA-1
13. What is professional conduct and why is it important?
Maintaining confidentiality, having moral ethics, standards of behavior. It is critical to maintaining your integrity and credibility.
13. What does MFT stand for?
Master File Table
18. Which organization provides good information on safe storage containers?
NISPOM refer to pg. 80,81
18. HPFS is used on which OS?
OS/2
12. Many of the newer GUI tools use a lot of system resources. True or False?
True look up pgs.
12. List two features NTFS has that FAT does not.
Unicode characters, security, journaling
5. To determine the types of operating systems needed in your lab, list two sources of information you could use.
Uniform Crime Report statistics for your area and a list of cases handled in your area or at your company
7. What is the ratio of sectors per cluster in a floppy disk?
a. 1:1 refer to review sheets
12. If a suspect computer is running Windows 2000, which of the following can you perform safely?
a. Browsing open applications refer to review sheets
24. To encrypt a FAT volume, which of the following utilities can you use?
c. PGP Whole Disk Encryption
7. When considering new forensics software tools, you should do which of the following?
c. Test and validate the software.
21. Virtual machines have which of the following limitations when running on a host computer?
c. Virtual machines are limited to the host computer's peripheral configurations, such as mouse, keyboard, CD/DVD drives, and other devices. refer to review pgs
16. A virtual cluster consists of what kind of clusters?
chained clusters
13. When you perform an acquisition at a remote location, what should you consider to prepare for this task?
determining whether there's sufficient electrical power and lighting and checking the temperature and humidity at the location
19. You have been called to the scene of a fatal car crash where a laptop computer is still running. What type of field kit should you take with you?
initial-response field kit
22. What are two concerns when acquiring data from a RAID server?
) amount of data storage needed. 2) the type of RAID server (0, 1, 5, etc.) 3) whether your acquisition tool can handle RAID acquisitions. 4) whether your analysis tool can handle RAID data 5) whether your analysis tool can split RAID data into separate d
3. What are two advantages and disadvantages of the raw format?
Advantages: faster data transfer speeds, ignores minor data errors, and most forensic analysis tools can read it. Disadvantages: requires equal or greater target disk space, does not contain hash values in the raw file (metadata), might have to run a sepa
2. A disk partition can be copied only with a command-line acquisition tool. True or False?
False
6. Sleuth Kit is used to access Autopsy's tools. True or False?
False (Autopsy is the front end to Sleuth Kit.)
15. Only one file format can compress graphics files. True or false?
False Page 325
6. A corporate investigator must follow Fourth Amendment standards when conducting an investigation. True or False?
False as long as the company has a security Banner.
11. What's the name of the NIST project established to collect all known hash values for commercial software and OS files?
National Software Reference Library (NSRL)
27. What is the ProDiscover remote access program?
PDServer
10. Warning banners are often easier to present in court than policy manuals are. True or False?
True. They are easier to present in a trial.
3. What does CHS stand for?
cylinders, heads, sectors
2. Building a business case can involve which of the following?
d) all of the above refer to review ques
8. What does a sparse acquisition collect for an investigation?
fragments of unallocated data in addition to the logical allocated data
20. In the Linux dcfldd command, which three options are used for validating data?
hash=, hashlog=, and vf=
19. Device drivers contain what kind of information?
instructions for the OS on how to interface with hardware devices
19. Which hashing algorithm utilities can be run from a Linux shell prompt?
md5sum and sha1sum
2. Name the three formats for computer forensics data acquisitions.
raw format, proprietary formats, and Advanced Forensic Format (AFF)
13. Typically, a(n) ____________ lab has a separate storage area or room for evidence.
regional
9. What should you consider when determining which data acquisition method to use?
size of the source drive, whether the source drive be retained as evidence, how long the acquisition will take, and where the disk evidence is located
