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2021 Mar SY0-401 sample question
Q671. A security administrator is auditing a database server to ensure the correct security measures are in place to protect the data. Some of the fields consist of people's first name, last name, home address, date of birth and mothers last name. Which of the following describes this type of data?
A. PII
B. PCI
C. Low
D. Public
Answer: A
Explanation:
Q672. By default, which of the following uses TCP port 22? (Select THREE).
A. FTPS
B. STELNET
C. TLS
D. SCP
E. SSL
F. HTTPS
G. SSH
H. SFTP
Answer: D,G,H
Explanation:
G: Secure Shell (SSH) is a cryptographic network protocol for securing data communication. It establishes a secure channel over an insecure network in a client-server architecture, connecting an SSH client application with an SSH server. Common applications include remote command-line login, remote command execution, but any network service can be secured with SSH. SSH uses port 22.
D: SCP stands for Secure Copy. SCP is used to securely copy files over a network. SCP uses SSH to secure the connection and therefore uses port 22.
H: SFTP stands for stands for Secure File Transfer Protocol and is used for transferring files using FTP over a secure network connection. SFTP uses SSH to secure the connection and therefore uses port 22.
Q673. Joe, the systems administrator, is setting up a wireless network for his team’s laptops only and needs to prevent other employees from accessing it. Which of the following would BEST address this?
A. Disable default SSID broadcasting.
B. Use WPA instead of WEP encryption.
C. Lower the access point’s power settings.
D. Implement MAC filtering on the access point.
Answer: D
Explanation:
If MAC filtering is turned off, any wireless client that knows the values looked for (MAC addresses) can join the network. When MAC filtering is used, the administrator compiles a list of the MAC addresses associated with users’ computers and enters those addresses. When a client attempts to connect and other values have been correctly entered, an additional check of the MAC address is done. If the address appears in the list, the client is allowed to join; otherwise, it is forbidden from doing so.
Q674. A large corporation has data centers geographically distributed across multiple continents. The company needs to securely transfer large amounts of data between the data center. The data transfer can be accomplished physically or electronically, but must prevent eavesdropping while the data is on transit. Which of the following represents the BEST cryptographic solution?
A. Driving a van full of Micro SD cards from data center to data center to transfer data
B. Exchanging VPN keys between each data center via an SSL connection and transferring the data in the VPN
C. Using a courier to deliver symmetric VPN keys to each data center and transferring data in the VPN
D. Using PKI to encrypt each file and transferring them via an Internet based FTP or cloud server
Answer: B
Explanation:
A virtual private network (VPN) is an encrypted communication tunnel that connects two systems over an untrusted network, such as the Internet. They provide security for both authentication and data transmission through a process called encapsulation. Secure Sockets Layer (SSL) can be used to exchange the VPN keys securely. SSL is used to establish secure TCP communication between two machines by encrypting the communication.
Q675. Without validating user input, an application becomes vulnerable to all of the following EXCEPT:
A. Buffer overflow.
B. Command injection.
C. Spear phishing.
D. SQL injection.
Answer: C
Explanation:
Input validation is a defensive technique intended to mitigate against possible user input attacks, such as buffer overflows and fuzzing. Input validation checks every user input submitted to the application before processing that input. The check could be a length, a character type, a language type, or a domain.
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Q676. An administrator would like to review the effectiveness of existing security in the enterprise. Which of the following would be the BEST place to start?
A. Review past security incidents and their resolution
B. Rewrite the existing security policy
C. Implement an intrusion prevention system
D. Install honey pot systems
Answer: C
Explanation:
The main functions of intrusion prevention systems are to identify malicious activity, log information about this activity, attempt to block/stop it, and report it
Q677. A technician is reviewing the logical access control method an organization uses. One of the senior managers requests that the technician prevent staff members from logging on during nonworking days. Which of the following should the technician implement to meet managements request?
A. Enforce Kerberos
B. Deploy smart cards
C. Time of day restrictions
D. Access control lists
Answer: C
Explanation: Time of day restrictions limit when users can access specific systems based on the time of day or week. It can limit access to sensitive environments to normal business hours.
Q678. A security analyst performs the following activities: monitors security logs, installs surveillance cameras and analyzes trend reports. Which of the following job responsibilities is the analyst performing? (Select TWO).
A. Detect security incidents
B. Reduce attack surface of systems
C. Implement monitoring controls
D. Hardening network devices
E. Prevent unauthorized access
Answer: A,C
Explanation:
Q679. 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.
Q680. A company is trying to implement physical deterrent controls to improve the overall security posture of their data center. Which of the following BEST meets their goal?
A. Visitor logs
B. Firewall
C. Hardware locks
D. Environmental monitoring
Answer: C
Explanation:
Hardware security involves applying physical security modifications to secure the system(s) and preventing them from leaving the facility. Don’t spend all of your time worrying about intruders coming through the network wire while overlooking the obvious need for physical security. Hardware security involves the use of locks to prevent someone from picking up and carrying out your equipment.