Exam Code: comptia security+ sy0 401 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: CompTIA Security+ Certification
Certification Provider: CompTIA
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Q221. Which of the following concepts are included on the three sides of the "security triangle"? (Select THREE).
A. Confidentiality
B. Availability
C. Integrity
D. Authorization
E. Authentication
F. Continuity
Answer: A,B,C
Explanation:
Confidentiality, integrity, and availability are the three most important concepts in security. Thus they form the security triangle.
Q222. Which of the following is an effective way to ensure the BEST temperature for all equipment within a datacenter?
A. Fire suppression
B. Raised floor implementation
C. EMI shielding
D. Hot or cool aisle containment
Answer: D
Explanation:
There are often multiple rows of servers located in racks in server rooms. The rows of servers are known as aisles, and they can be cooled as hot aisles and cold aisles. With a hot aisle, hot air outlets are used to cool the equipment, whereas with cold aisles, cold air intake is used to cool the equipment. Combining the two, you have cold air intake from below the aisle and hot air outtake above it, providing constant circulation. This is a more effective way of controlling temperature to safeguard your equipment in a data center.
Q223. After a new firewall has been installed, devices cannot obtain a new IP address. Which of the following ports should Matt, the security administrator, open on the firewall?
A. 25
B. 68
C. 80
D. 443
Answer: B
Explanation:
The Dynamic Host Configuration Protocol (DHCP) is a standardized network protocol used on Internet Protocol (IP) networks for distributing IP addresses for interfaces and services. DHCP makes use of port 68.
Q224. A forensic analyst is reviewing electronic evidence after a robbery. Security cameras installed at the site were facing the wrong direction to capture the incident. The analyst ensures the cameras are turned to face the proper direction. Which of the following types of controls is being used?
A. Detective
B. Deterrent
C. Corrective
D. Preventive
Answer: C
Explanation:
A corrective control would be any corrective action taken to correct any existing control that were faulty or wrongly installed – as in this case the cameras were already there, it just had to be adjusted to perform its function as intended.
Q225. 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.
Q226. A firewall technician has been instructed to disable all non-secure ports on a corporate firewall. The technician has blocked traffic on port 21, 69, 80, and 137-139. The technician has allowed traffic on ports 22 and 443. Which of the following correctly lists the protocols blocked and allowed?
A. Blocked: TFTP, HTTP, NetBIOS; Allowed: HTTPS, FTP
B. Blocked: FTP, TFTP, HTTP, NetBIOS; Allowed: SFTP, SSH, SCP, HTTPS
C. Blocked: SFTP, TFTP, HTTP, NetBIOS; Allowed: SSH, SCP, HTTPS
D. Blocked: FTP, HTTP, HTTPS; Allowed: SFTP, SSH, SCP, NetBIOS
Answer: B
Explanation:
The question states that traffic on port 21, 69, 80, and 137-139 is blocked, while ports 22 and 443 are allowed.
Port 21 is used for FTP by default.
Port 69 is used for TFTP.
Port 80 is used for HTTP.
Ports 137-139 are used for NetBIOS.
VMM uses SFTP over default port 22.
Port 22 is used for SSH by default.
SCP runs over TCP port 22 by default.
Port 443 is used for HTTPS.
Q227. The security administrator notices a user logging into a corporate Unix server remotely as root.
Which of the following actions should the administrator take?
A. Create a firewall rule to block SSH
B. Delete the root account
C. Disable remote root logins
D. Ensure the root account has a strong password
Answer: C
Explanation:
Q228. Which of the following are restricted to 64-bit block sizes? (Select TWO).
A. PGP
B. DES
C. AES256
D. RSA
E. 3DES
F. AES
Answer: B,E
Explanation:
B: The Data Encryption Standard (DES) has been used since the mid-1970s. It was the primary standard used in government and industry until it was replaced by AES. It’s based on a 56-bit key and has several modes that offer security and integrity. It is now considered insecure because of the small key size.
E: Triple-DES (3DES) is a technological upgrade of DES. 3DES is still used, even though AES is the preferred choice for government applications. 3DES is considerably harder to break than many other systems, and it’s more secure than DES. It increases the key length to 168 bits (using three 56-bit DES keys).
Q229. Which of the following offerings typically allows the customer to apply operating system patches?
A. Software as a service
B. Public Clouds
C. Cloud Based Storage
D. Infrastructure as a service
Answer: D
Explanation:
Cloud users install operating-system images and their application software on the cloud infrastructure to deploy their applications. In this model, the cloud user patches and maintains the operating systems and the application software.
Q230. Which of the following is a best practice when a mistake is made during a forensics examination?
A. The examiner should verify the tools before, during, and after an examination.
B. The examiner should attempt to hide the mistake during cross-examination.
C. The examiner should document the mistake and workaround the problem.
D. The examiner should disclose the mistake and assess another area of the disc.
Answer: C
Explanation:
Every step in an incident response should be documented, including every action taken by end users and the incident-response team.