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Q481. Matt, a security consultant, has been tasked with increasing server fault tolerance and has been given no budget to accomplish his task. Which of the following can Matt implement to ensure servers will withstand hardware failure?
A. Hardware load balancing
B. RAID
C. A cold site
D. A host standby
Answer: B
Explanation:
Fault tolerance is the ability of a system to sustain operations in the event of a component failure. Fault-tolerant systems can continue operation even though a critical component, such as a disk drive, has failed. This capability involves overengineering systems by adding redundant components and subsystems. RAID can achieve fault tolerance using software which can be done using the existing hardware and software.
Q482. Company employees are required to have workstation client certificates to access a bank website. These certificates were backed up as a precautionary step before the new computer upgrade. After the upgrade and restoration, users state they can access the bank’s website, but not login. Which is the following is MOST likely the issue?
A. The IP addresses of the clients have change
B. The client certificate passwords have expired on the server
C. The certificates have not been installed on the workstations
D. The certificates have been installed on the CA
Answer: C
Explanation:
The computer certificates must be installed on the upgraded client computers.
Q483. A large multinational corporation with networks in 30 countries wants to establish an understanding of their overall public-facing network attack surface. Which of the following security techniques would be BEST suited for this?
A. External penetration test
B. Internal vulnerability scan
C. External vulnerability scan
D. Internal penetration test
Answer: C
Explanation:
Q484. Joe, an employee, was escorted from the company premises due to suspicion of revealing trade secrets to a competitor. Joe had already been working for two hours before leaving the premises.
A security technician was asked to prepare a report of files that had changed since last night’s integrity scan.
Which of the following could the technician use to prepare the report? (Select TWO).
A. PGP
B. MD5
C. ECC
D. AES
E. Blowfish
F. HMAC
Answer: B,F
Explanation:
B: MD5 can be used to locate the data which has changed.
The Message Digest Algorithm (MD) creates a hash value and uses a one-way hash. The hash
value is used to help maintain integrity. There are several versions of MD; the most common are
MD5, MD4, and MD2.
F: A common method of verifying integrity involves adding a message authentication code (MAC)
to the message.
HMAC (Hash-Based Message Authentication Code) uses a hashing algorithm along with a
symmetric key.
Q485. Which of the following is the BEST way to prevent Cross-Site Request Forgery (XSRF) attacks?
A. Check the referrer field in the HTTP header
B. Disable Flash content
C. Use only cookies for authentication
D. Use only HTTPS URLs
Answer: A
Explanation:
XSRF or cross-site request forgery applies to web applications and is an attack that exploits the web application’s trust of a user who known or is supposed to have been authenticated. This is accomplished by changing values in the HTTP header and even in the user’s cookie to falsify access. It can be prevented by embedding additional authentication data into requests that allows the web application to detect requests from unauthorized locations. Examples are synchronizer token patterns, cookie-to-header tokens, and checking the HTTP Referrer header and the HTTP Origin header.
Q486. A security administrator must implement a wireless security system, which will require users to enter a 30 character ASCII password on their accounts. Additionally the system must support 3DS wireless encryption.
Which of the following should be implemented?
A. WPA2-CCMP with 802.1X
B. WPA2-PSK
C. WPA2-CCMP
D. WPA2-Enterprise
Answer: D
Explanation:
D: WPA-Enterprise is also referred to as WPA-802.1X mode, and sometimes just WPA (as opposed to WPA-PSK), this is designed for enterprise networks and requires a RADIUS authentication server. This requires a more complicated setup, but provides additional security
(e.g. protection against dictionary attacks on short passwords). Various kinds of the Extensible Authentication Protocol (EAP) are used for authentication. RADIUS can be managed centrally, and the servers that allow access to a network can verify with a RADIUS server whether an incoming caller is authorized. Thus the RADIUS server can perform all authentications. This will require users to use their passwords on their user accounts.
Q487. A computer security officer has investigated a possible data breach and has found it credible. The officer notifies the data center manager and the Chief Information Security Officer (CISO). This is an example of:
A. escalation and notification.
B. first responder.
C. incident identification.
D. incident mitigation.
Answer: A
Explanation:
Q488. A large bank has moved back office operations offshore to another country with lower wage costs in an attempt to improve profit and productivity. Which of the following would be a customer concern if the offshore staff had direct access to their data?
A. Service level agreements
B. Interoperability agreements
C. Privacy considerations
D. Data ownership
Answer: C
Explanation:
Q489. Identifying residual risk is MOST important to which of the following concepts?
A. Risk deterrence
B. Risk acceptance
C. Risk mitigation
D. Risk avoidance
Answer: B
Explanation:
Risk acceptance is often the choice you must make when the cost of implementing any of the other four choices exceeds the value of the harm that would occur if the risk came to fruition. To truly qualify as acceptance, it cannot be a risk where the administrator or manager is unaware of its existence; it has to be an identified risk for which those involved understand the potential cost or damage and agree to accept it. Residual risk is always present and will remain a risk thus it should be accepted (risk acceptance)
Q490. Which of the following symmetric key algorithms are examples of block ciphers? (Select THREE).
A. RC4
B. 3DES
C. AES
D. MD5
E. PGP
F. Blowfish
Answer: B,C,F
Explanation:
B: Triple DES (3DES) is the common name for the Triple Data Encryption Algorithm (TDEA or Triple DEA) symmetric-key block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block.
C: Advanced Encryption Standard (AES) is a block cipher that has replaced DES as the current standard, and it uses the Rijndael algorithm. It was developed by Joan Daemen and Vincent Rijmen. AES is the current product used by U.S. governmental agencies.
F: Blowfish is an encryption system invented by a team led by Bruce Schneier that performs a 64-bit block cipher at very fast speeds.