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Q641. Which of the following wireless protocols could be vulnerable to a brute-force password attack? (Select TWO).
A. WPA2-PSK
B. WPA - EAP - TLS
C. WPA2-CCMP
D. WPA -CCMP
E. WPA - LEAP
F. WEP
Answer: A,E
Explanation:
A brute force attack is an attack that attempts to guess a password. WPA2-PSK and WEP both use a “Pre-Shared Key”. The pre-shared key is a password and therefore is susceptible to a brute force attack.
Q642. Which of the following types of application attacks would be used to specifically gain unauthorized information from databases that did not have any input validation implemented?
A. SQL injection
B. Session hijacking and XML injection
C. Cookies and attachments
D. Buffer overflow and XSS
Answer: A
Explanation:
To access information in databases, you use SQL. To gain unauthorized information from databases, a SQL Injection attack is used.
SQL injection is a code injection technique, used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker). SQL injection must exploit a security vulnerability in an application's software, for example, when user input is either incorrectly filtered for string literal escape characters embedded in SQL statements or user input is not strongly typed and unexpectedly executed. SQL injection is mostly known as an attack vector for websites but can be used to attack any type of SQL database.
Q643. A company wants to ensure that all credentials for various systems are saved within a central database so that users only have to login once for access to all systems. Which of the following would accomplish this?
A. Multi-factor authentication
B. Smart card access
C. Same Sign-On
D. Single Sign-On
Answer: D
Explanation:
Single sign-on means that once a user (or other subject) is authenticated into a realm, re-authentication is not required for access to resources on any realm entity. Single sign-on is able to internally translate and store credentials for the various mechanisms, from the credential used for original authentication.
Q644. Human Resources suspect an employee is accessing the employee salary database. The administrator is asked to find out who it is. In order to complete this task, which of the following is a security control that should be in place?
A. Shared accounts should be prohibited.
B. Account lockout should be enabled
C. Privileges should be assigned to groups rather than individuals
D. Time of day restrictions should be in use
Answer: A
Explanation:
Since distinguishing between the actions of one person and another isn’t possible if they both use a shared account, shared accounts should not be allowed. If shared accounts are being used, the administrator will find the account, but have more than one suspect. To nullify this occurrence, Shared accounts should be prohibited.
Q645. A CRL is comprised of.
A. Malicious IP addresses.
B. Trusted CA’s.
C. Untrusted private keys.
D. Public keys.
Answer: D
Explanation:
A certificate revocation list (CRL) is created and distributed to all CAs to revoke a certificate or
key.
By checking the CRL you can check if a particular certificate has been revoked.
The certificates for which a CRL should be maintained are often X.509/public key certificates, as
this format is commonly used by PKI schemes.
Q646. Which of the following results in datacenters with failed humidity controls? (Select TWO).
A. Excessive EMI
B. Electrostatic charge
C. Improper ventilation
D. Condensation
E. Irregular temperature
Answer: B,D
Explanation:
Humidity control prevents the buildup of static electricity in the environment. If the humidity drops much below 50 percent, electronic components are extremely vulnerable to damage from electrostatic shock. Most environmental systems also regulate humidity; however, a malfunctioning system can cause the humidity to be almost entirely extracted from a room. Make sure that environmental systems are regularly serviced. Electrostatic damage can occur when humidity levels get too low. Condensation is a direct result from failed humidity levels.
Q647. Requiring technicians to report spyware infections is a step in which of the following?
A. Routine audits
B. Change management
C. Incident management
D. Clean desk policy
Answer: C
Explanation:
Incident management refers to the steps followed when events occur (making sure controls are in place to prevent unauthorized access to, and changes of, all IT assets).
Q648. During a recent investigation, an auditor discovered that an engineer’s compromised workstation was being used to connect to SCADA systems while the engineer was not logged in. The engineer is responsible for administering the SCADA systems and cannot be blocked from connecting to them. The SCADA systems cannot be modified without vendor approval which requires months of testing.
Which of the following is MOST likely to protect the SCADA systems from misuse?
A. Update anti-virus definitions on SCADA systems
B. Audit accounts on the SCADA systems
C. Install a firewall on the SCADA network
D. Deploy NIPS at the edge of the SCADA network
Answer: D
Explanation:
A supervisory control and data acquisition (SCADA) system is an industrial control system (ICS) that is used to control infrastructure processes, facility-based processes, or industrial processes. A network-based IPS (NIPS) is an intrusion detection and prevention system that scans network traffic in real time against a database of attack signatures. It is useful for detecting and responding to network-based attacks originating from outside the organization.
Q649. A security administrator wants to test the reliability of an application which accepts user provided parameters. The administrator is concerned with data integrity and availability. Which of the following should be implemented to accomplish this task?
A. Secure coding
B. Fuzzing
C. Exception handling
D. Input validation
Answer: B
Explanation:
Fuzzing is a software testing technique that involves providing invalid, unexpected, or random data to as inputs to a computer program. The program is then monitored for exceptions such as crashes, or failed validation, or memory leaks.
Q650. An administrator needs to secure RADIUS traffic between two servers. Which of the following is the BEST solution?
A. Require IPSec with AH between the servers
B. Require the message-authenticator attribute for each message
C. Use MSCHAPv2 with MPPE instead of PAP
D. Require a long and complex shared secret for the servers
Answer: A
Explanation: