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2014年4月29日星期二

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212-77Exam Code: 212-77
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312-50v7Exam Code: 312-50v7
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NO.1 What type of attack is shown in the following diagram?
A. Man-in-the-Middle (MiTM) Attack
B. Session Hijacking Attack
C. SSL Spoofing Attack
D. Identity Stealing Attack
Answer: A

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NO.2 Lori is a Certified Ethical Hacker as well as a Certified Hacking Forensics Investigator working as an IT
security consultant. Lori has been hired on by Kiley Innovators, a large marketing firm that recently
underwent a string of thefts and corporate espionage incidents. Lori is told that a rival marketing company
came out with an exact duplicate product right before Kiley Innovators was about to release it. The
executive team believes that an employee is leaking information to the rival company. Lori questions all
employees, reviews server logs, and firewall logs; after which she finds nothing. Lori is then given
permission to search through the corporate email system. She searches by email being sent to and sent
from the rival marketing company.
She finds one employee that appears to be sending very large email to this other marketing company,
even though they should have no reason to be communicating with them. Lori tracks down the actual
emails sent and upon opening them, only finds picture files attached to them. These files seem perfectly
harmless, usually containing some kind of joke. Lori decides to use some special software to further
examine the pictures and finds that each one had hidden text that was stored in each picture.
What technique was used by the Kiley Innovators employee to send information to the rival marketing
company?
A. The Kiley Innovators employee used cryptography to hide the information in the emails sent
B. The method used by the employee to hide the information was logical watermarking
C. The employee used steganography to hide information in the picture attachments
D. By using the pictures to hide information, the employee utilized picture fuzzing
Answer: C

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NO.3 More sophisticated IDSs look for common shellcode signatures. But even these systems can be
bypassed, by using polymorphic shellcode. This is a technique common among virus writers ?it basically
hides the true nature of the shellcode in different disguises.
How does a polymorphic shellcode work?
A. They encrypt the shellcode by XORing values over the shellcode, using loader code to decrypt the
shellcode, and then executing the decrypted shellcode
B. They convert the shellcode into Unicode, using loader to convert back to machine code then executing
them
C. They reverse the working instructions into opposite order by masking the IDS signatures
D. They compress shellcode into normal instructions, uncompress the shellcode using loader code and
then executing the shellcode
Answer: A

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NO.4 Jack Hacker wants to break into Brown Co.'s computers and obtain their secret double fudge cookie
recipe. Jack calls Jane, an accountant at Brown Co., pretending to be an administrator from Brown Co.
Jack tells Jane that there has been a problem with some accounts and asks her to verify her password
with him ''just to double check our records.'' Jane does not suspect anything amiss, and parts with her
password. Jack can now access Brown Co.'s computers with a valid user name and password, to steal
the cookie recipe. What kind of attack is being illustrated here?
A. Reverse Psychology
B. Reverse Engineering
C. Social Engineering
D. Spoofing Identity
E. Faking Identity
Answer: C

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NO.5 Which of the following countermeasure can specifically protect against both the MAC Flood and MAC
Spoofing attacks?
A. Configure Port Security on the switch
B. Configure Port Recon on the switch
C. Configure Switch Mapping
D. Configure Multiple Recognition on the switch
Answer: A

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NO.6 What does ICMP (type 11, code 0) denote?
A. Source Quench
B. Destination Unreachable
C. Time Exceeded
D. Unknown Type
Answer: C

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NO.7 If a competitor wants to cause damage to your organization, steal critical secrets, or put you out of
business, they just have to find a job opening, prepare someone to pass the interview, have that person
hired, and they will be in the organization.
How would you prevent such type of attacks?
A. It is impossible to block these attacks
B. Hire the people through third-party job agencies who will vet them for you
C. Conduct thorough background checks before you engage them
D. Investigate their social networking profiles
Answer: C

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NO.8 Jimmy, an attacker, knows that he can take advantage of poorly designed input validation routines to
create or alter SQL commands to gain access to private data or execute commands in the database.
What technique does Jimmy use to compromise a database.?
A. Jimmy can submit user input that executes an operating system command to compromise a target
system
B. Jimmy can gain control of system to flood the target system with requests, preventing legitimate users
from gaining access
C. Jimmy can utilize an incorrect configuration that leads to access with higher-than expected privilege of
the database
D. Jimmy can utilize this particular database threat that is an SQL injection technique to penetrate a target
system
Answer: D

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2013年6月18日星期二

EC-COUNCIL 212-77 exam practice questions and answers

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Exam Code: 212-77

Exam Name: EC-COUNCIL (Linux Security )

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NO.1 Which of the following are ways to disable dynamic routing?
A. The linuxconf Gated Daemon screen
B. The linuxconf Routed Daemon screen
C. echo "0" > /proc/sys/net/ipv4/dynamic_routing
D. Editing /etc/sysconfig/network-scripts
Answer: B

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NO.2 You are told by a co-worker that information pertaining to the syslog command can
be found in man page 3. How would you view this information?
A. man syslog 3
B. man 3 syslog
C. man syslog -3
D. man -3 syslog
Answer: B

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NO.3 Under the bash shell which is the most appropriate place to set environment
variables that apply to all users?
A. /etc/skel
B. rc.sysinit
C. /etc/profile
D. /etc/bashrc
E. rc.local
Answer: A

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NO.4 Assume that you have just logged on as a regular user. Which of the following
commands allows you to edit the file with user passwords associated with the
Shadow Password Suite?
A. vi /etc/shadow
B. sudo -c "vi /etc/shadow"
C. su -c "vi /etc/shadow"
D. visu vi /etc/passwd
Answer: B

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NO.5 How should you engage users in helping to secure your computer's passwords?
A. Educate them about the importance of security, the means of choosing good
passwords, and the ways crackers can obtain passwords.
B. Instruct your users to e-mail copies of their passwords to themselves on other systems
so that they're readily available in case of an emergency.
C. Enforce password change rules but don't tell users how crackers obtain passwords
since you could be educating a future cracker.
D. Give some of your users copies of the encrypted database file as backup in case a
cracker breaks in and corrupts the original.
Answer: A

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NO.6 Which of the following measures is the most effective way to prevent attacks
through various network services?
A. Disable a service in the appropriate /etc/xinetd.d configuration file.
B. Use a firewall to drop all requests to unneeded services.
C. Block service requests with the appropriate commands in /etc/hosts.deny.
D. Uninstall unneeded network services.
Answer: D

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NO.7 Which of the following is true of Linux passwords?
A. They are changed with the password utility.
B. They must be changed once a month.
C. They may consist only of lowercase letters and numbers.
D. They may be changed by the user who owns an account or by root.
Answer: A

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NO.8 Which of the following are risks of SUID and SGID programs? (Choose two)
A. Bugs in the programs may cause more damage than they would in ordinary programs.
B. The program files are large and thus may cause a disk to run out of space.
C. Because the programs require password entry, running them over an insecure network
link runs the risk of password interception.
D. Users may be able to abuse a program's features, thus doing more damage than would
otherwise be possible.
Answer: B, D

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NO.9 Which of the following is not a Linux DHCP client?
A. dhcpcd
B. pump
C. dhcpd
D. dhclient
Answer: A

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NO.10 Which of the following statements applies to the IP address 192.168.0.1?
A. It is reserved.
B. It cannot be assigned to a host that accesses the Internet.
C. It is designated for multicast transmission.
D. It can be freely assigned to a host on a private network
Answer: A

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