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2021 Dec SY0-401 practice test
Q331. During a penetration test from the Internet, Jane, the system administrator, was able to establish a connection to an internal router, but not successfully log in to it. Which ports and protocols are MOST likely to be open on the firewall? (Select FOUR).
A. 21
B. 22
C. 23
D. 69
E. 3389
F. SSH
G. Terminal services
H. Rlogin
I. Rsync
J. Telnet
Answer: B,C,F,J
Explanation:
The question states that Jane was able to establish a connection to an internal router. Typical
ports and protocols used to connect to a router include the following:
B, F: Port 22 which is used by SSH (Secure Shell).
C, J: Port 23 which is used by Telnet.
SSH and Telnet both provide command line interfaces for administering network devices such as
routers and switches.
Q332. Which of the following BEST describes a SQL Injection attack?
A. The attacker attempts to have the receiving server pass information to a back-end database from which it can compromise the stored information.
B. The attacker attempts to have the receiving server run a payload using programming commonly found on web servers.
C. The attacker overwhelms a system or application, causing it to crash and bring the server down to cause an outage.
D. The attacker overwhelms a system or application, causing it to crash, and then redirects the memory address to read from a location holding the payload.
Answer: A
Explanation:
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.
Q333. Which of the following should Jane, a security administrator, perform before a hard drive is analyzed with forensics tools?
A. Identify user habits
B. Disconnect system from network
C. Capture system image
D. Interview witnesses
Answer: C
Explanation:
Capturing an image of the operating system in its exploited state can be helpful in revisiting the issue after the fact to learn more about it. Very much as helpful in same way that a virus sample is kept in laboratories to study later after a breakout. Also you should act in the order of volatility which states that the system image capture is first on the list of a forensic analysis.
Q334. 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.
Q335. An administrator is building a development environment and requests that three virtual servers are cloned and placed in a new virtual network isolated from the production network. Which of the following describes the environment the administrator is building?
A. Cloud
B. Trusted
C. Sandbox
D. Snapshot
Answer: C
Explanation:
Sandboxing is the process of isolating a system before installing new applications on it so as to restrict any potential malware that may be embedded in the new application from being able to cause harm to production systems.
Abreast of the times SY0-401 test questions:
Q336. After recovering from a data breach in which customer data was lost, the legal team meets with the Chief Security Officer (CSO) to discuss ways to better protect the privacy of customer data.
Which of the following controls support this goal?
A. Contingency planning
B. Encryption and stronger access control
C. Hashing and non-repudiation
D. Redundancy and fault tolerance
Answer: B
Explanation:
Encryption is used to protect data/contents/documents. Access control refers to controlling who accesses any data/contents/documents and to exercise authorized control to the accessing of that data.
Q337. Identifying a list of all approved software on a system is a step in which of the following practices?
A. Passively testing security controls
B. Application hardening
C. Host software baselining
D. Client-side targeting
Answer: C
Explanation:
Application baseline defines the level or standard of security that will be implemented and maintained for the application. It may include requirements of hardware components, operating system versions, patch levels, installed applications and their configurations, and available ports and services. Systems can be compared to the baseline to ensure that the required level of security is being maintained.
Q338. Which of the following will help prevent smurf attacks?
A. Allowing necessary UDP packets in and out of the network
B. Disabling directed broadcast on border routers
C. Disabling unused services on the gateway firewall
D. Flash the BIOS with the latest firmware
Answer: B
Explanation:
Q339. A software company has completed a security assessment. The assessment states that the company should implement fencing and lighting around the property. Additionally, the assessment states that production releases of their software should be digitally signed. Given the recommendations, the company was deficient in which of the following core security areas? (Select TWO).
A. Fault tolerance
B. Encryption
C. Availability
D. Integrity
E. Safety
F. Confidentiality
Answer: D,E
Explanation:
Aspects such as fencing, proper lighting, locks, CCTV, Escape plans Drills, escape routes and
testing controls form part of safety controls.
Integrity refers to aspects such as hashing, digital signatures, certificates and non-repudiation – all
of which has to do with data integrity.
Q340. One of the system administrators at a company is assigned to maintain a secure computer lab. The administrator has rights to configure machines, install software, and perform user account maintenance. However, the administrator cannot add new computers to the domain, because that requires authorization from the Information Assurance Officer. This is an example of which of the following?
A. Mandatory access
B. Rule-based access control
C. Least privilege
D. Job rotation
Answer: C
Explanation:
A least privilege policy should be used when assigning permissions. Give users only the permissions that they need to do their work and no more.