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Q241. A recent audit of a company’s identity management system shows that 30% of active accounts belong to people no longer with the firm. Which of the following should be performed to help avoid this scenario? (Select TWO).
A. Automatically disable accounts that have not been utilized for at least 10 days.
B. Utilize automated provisioning and de-provisioning processes where possible.
C. Request that employees provide a list of systems that they have access to prior to leaving the firm.
D. Perform regular user account review / revalidation process.
E. Implement a process where new account creations require management approval.
Answer: B,D
Explanation:
Provisioning and de-provisioning processes can occur manually or automatically. Since the manual processes are so time consuming, the automated option should be used as it is more efficient. Revalidating user accounts would determine which users are no longer active.
Q242. Which of the following is an important implementation consideration when deploying a wireless network that uses a shared password?
A. Authentication server
B. Server certificate
C. Key length
D. EAP method
Answer: C
Explanation:
Key length is the main issue of concern since the wireless network uses a shared password. With risks of shared passwords makes the length of the password a crucial factor to risk mitigation.
Q243. Which of the following is a directional antenna that can be used in point-to-point or point-to-multi-point WiFi communication systems? (Select TWO).
A. Backfire
B. Dipole
C. Omni
D. PTZ
E. Dish
Answer: A,E
Explanation:
Q244. Which of the following would a security administrator implement in order to identify a problem between two systems that are not communicating properly?
A. Protocol analyzer
B. Baseline report
C. Risk assessment
D. Vulnerability scan
Answer: A
Explanation:
A Protocol Analyzer is a hardware device or more commonly a software program used to capture
network data communications sent between devices on a network. Capturing and analyzing the
packets sent from two systems that are not communicating properly could help determine the
cause of the issue.
Well known software protocol analyzers include Message Analyzer (formerly Network Monitor)
from Microsoft and Wireshark (formerly Ethereal).
Q245. A system administrator is using a packet sniffer to troubleshoot remote authentication. The administrator detects a device trying to communicate to TCP port 49. Which of the following authentication methods is MOST likely being attempted?
A. RADIUS
B. TACACS+
C. Kerberos
D. LDAP
Answer: B
Explanation:
TACACS makes use of TCP port 49 by default.
Q246. Which of the following practices is used to mitigate a known security vulnerability?
A. Application fuzzing
B. Patch management
C. Password cracking
D. Auditing security logs
Answer: B
Explanation:
Patch management is the process of maintaining the latest source code for applications and operating systems by applying the latest vendor updates. This helps protect a systems from new attacks and vulnerabilities that have recently become known.
Q247. Which of the following types of wireless attacks would be used specifically to impersonate another WAP in order to gain unauthorized information from mobile users?
A. IV attack
B. Evil twin
C. War driving
D. Rogue access point
Answer: B
Explanation:
An evil twin, in the context of network security, is a rogue or fake wireless access point (WAP) that appears as a genuine hotspot offered by a legitimate provider. In an evil twin attack, an eavesdropper or hacker fraudulently creates this rogue hotspot to collect the personal data of unsuspecting users. Sensitive data can be stolen by spying on a connection or using a phishing technique. For example, a hacker using an evil twin exploit may be positioned near an authentic Wi-Fi access point and discover the service set identifier (SSID) and frequency. The hacker may then send a radio signal using the exact same frequency and SSID. To end users, the rogue evil twin appears as their legitimate hotspot with the same name. In wireless transmissions, evil twins are not a new phenomenon. Historically, they were known as honeypots or base station clones. With the advancement of wireless technology and the use of wireless devices in public areas, it is very easy for novice users to set up evil twin exploits.
Q248. A security administrator at a company which implements key escrow and symmetric encryption only, needs to decrypt an employee's file. The employee refuses to provide the decryption key to the file. Which of the following can the administrator do to decrypt the file?
A. Use the employee's private key
B. Use the CA private key
C. Retrieve the encryption key
D. Use the recovery agent
Answer: C
Explanation:
Q249. Which of the following components of an all-in-one security appliance would MOST likely be configured in order to restrict access to peer-to-peer file sharing websites?
A. Spam filter
B. URL filter
C. Content inspection
D. Malware inspection
Answer: B
Explanation:
The question asks how to prevent access to peer-to-peer file sharing websites. You access a website by browsing to a URL using a Web browser or peer-to-peer file sharing client software. A URL filter is used to block URLs (websites) to prevent users accessing the website.
Incorrect Answer:
A: A spam filter is used for email. All inbound (and sometimes outbound) email is passed through the spam filter to detect spam emails. The spam emails are then discarded or tagged as potential spam according to the spam filter configuration. Spam filters do not prevent users accessing peer-to-peer file sharing websites.
C: Content inspection is the process of inspecting the content of a web page as it is downloaded. The content can then be blocked if it doesn’t comply with the company’s web policy. Content-control software determines what content will be available or perhaps more often what content will be blocked. Content inspection does not prevent users accessing peer-to-peer file sharing websites (although it could block the content of the sites as it is downloaded).
D: Malware inspection is the process of scanning a computer system for malware. Malware inspection does not prevent users accessing peer-to-peer file sharing websites.
References: http://www.provision.ro/threat-management/web-application-security/url-filtering#pagei-1|pagep-1| Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp 18, 19.
Q250. Which of the following secure file transfer methods uses port 22 by default?
A. FTPS
B. SFTP
C. SSL
D. S/MIME
Answer: B
Explanation:
SSH uses TCP port 22. All protocols encrypted by SSH, including SFTP, SHTTP, SCP, SExec, and slogin, also use TCP port 22.