[Free] 2018(July) Dumps4cert CompTIA SY0-401 Dumps with VCE and PDF Download 921-930

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CompTIA Security Certification

Question No: 921 – (Topic 5)

A security administrator is tackling issues related to authenticating users at a remote site. There have been a large number of security incidents that resulted from either tailgating or impersonation of authorized users with valid credentials. The security administrator has been told to implement multifactor authentication in order to control facility access. To secure access to the remote facility, which of the following could be implemented without increasing the amount of space required at the entrance?

  1. MOTD challenge and PIN pad

  2. Retina scanner and fingerprint reader

  3. Voice recognition and one-time PIN token

  4. One-time PIN token and proximity reader

Answer: C Explanation:

Authentication systems or methods are based on one or more of these five factors: Something you know, such as a password or PIN

Something you have, such as a smart card, token, or identification device

Something you are, such as your fingerprints or retinal pattern (often called biometrics) Something you do, such as an action you must take to complete authentication Somewhere you are (this is based on geolocation)

Multifactor authentication is authentication that uses two of more of the authentication

factors listed above.

In this question, we can use voice recognition (something you are) and a one-time PIN token (something you have) to provide two factors of authentication. The one-time PIN token is a small device that generates a one-time PIN to enable access.

Question No: 922 – (Topic 5)

Ann, a security administrator, wishes to replace their RADIUS authentication with a more secure protocol, which can utilize EAP. Which of the following would BEST fit her objective?

  1. CHAP

  2. SAML

  3. Kerberos

  4. Diameter

Answer: D Explanation:

Diameter is an authentication, authorization, and accounting protocol that replaces the RADIUS protocol. Diameter Applications extend the base protocol by including new commands and/or attributes, such as those for use of the Extensible Authentication Protocol (EAP).

Question No: 923 – (Topic 5)

Which of the following is an authentication method that can be secured by using SSL?


  2. LDAP


  4. Kerberos

Answer: B Explanation:

With secure LDAP (LDAPS), all LDAP communications are encrypted with SSL/TLS

Question No: 924 – (Topic 5)

A supervisor in the human resources department has been given additional job duties in the accounting department. Part of their new duties will be to check the daily balance sheet calculations on spreadsheets that are restricted to the accounting group. In which of the following ways should the account be handled?

  1. The supervisor should be allowed to have access to the spreadsheet files, and their membership in the human resources group should be terminated.

  2. The supervisor should be removed from the human resources group and added to the accounting group.

  3. The supervisor should be added to the accounting group while maintaining their membership in the human resources group.

  4. The supervisor should only maintain membership in the human resources group.

Answer: C Explanation:

You can assign permissions to access resources either to a user or a group. The most efficient way is to assign permissions to a group (group based privileges). By assigning the human resources supervisor’s user account to the group means the supervisor will inherit the permissions of that group, and allow him to carry out the new duties. Because the new duties are being added to his normal duties, maintaining membership in the human resources group will allow the supervisor to continue performing his normal duties.

Question No: 925 – (Topic 5)

Which of the following security concepts can prevent a user from logging on from home during the weekends?

  1. Time of day restrictions

  2. Multifactor authentication

  3. Implicit deny

  4. Common access card

Answer: A 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 when oversight and monitoring can be performed to prevent fraud, abuse, or intrusion.

Question No: 926 – (Topic 5)

Ann has recently transferred from the payroll department to engineering. While browsing file shares, Ann notices she can access the payroll status and pay rates of her new coworkers. Which of the following could prevent this scenario from occurring?

  1. Credential management

  2. Continuous monitoring

  3. Separation of duties

  4. User access reviews

Answer: D Explanation:

In addition to assigning user access properly, it is important to review that access periodically. Access review is a process to determine whether a user’s access level is still appropriate. People’s roles within an organization can change over time. It is important to review user accounts periodically and determine if they still require the access they currently have. An example of such a scenario would be a network administrator who was responsible for the domain controller but then moved over to administer the remote access servers. The administrator’s access to the domain controller should now be terminated.

This concept of access review is closely related to the concept of least privileges. It is important that users do not have “leftover” privileges from previous job roles.

Question No: 927 – (Topic 5)

Ann, the security administrator, wishes to implement multifactor security. Which of the following should be implemented in order to compliment password usage and smart cards?

  1. Hard tokens

  2. Fingerprint readers

  3. Swipe badge readers

  4. Passphrases

Answer: B Explanation:

A multifactor authentication method uses two or more processes for logon. A twofactor method might use smart cards and biometrics for logon. For obvious reasons, the two or more factors employed should not be from the same category.

Question No: 928 HOTSPOT – (Topic 5)

For each of the given items, select the appropriate authentication category from the drop down choices.

Select the appropriate authentication type for the following items:

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Biometrics refers to a collection of physical attributes of the human body that can be used as identification or an authentication factor. Fingerprints and retinas are physical attributes of the human body.

Two types of tokens exist, Time-based one-time password (TOTP) tokens and HMAC- based one-time password (HOTP). TOTP tokens generate passwords at fixed time intervals, whereas HOTP tokens generate passwords not based on fixed time intervals but instead based on a non-repeating one-way function, such as a hash or HMAC operation. Smart cards can have Multi-factor and proximity authentication embedded into it.

PAP allows for two entities to share a password in advance and use the password as the basis of authentication. The same goes for PIN numbers.


Stewart, James Michael, CompTIA Security Review Guide, Sybex, Indianapolis, 2014, pp. 282, 285

http://en.wikipedia.org/wiki/Password_authentication_protocol#Working_cycle http://en.wikipedia.org/wiki/Smart_card#Security

Question No: 929 – (Topic 5)

The systems administrator notices that many employees are using passwords that can be easily guessed or are susceptible to brute force attacks. Which of the following would BEST mitigate this risk?

  1. Enforce password rules requiring complexity.

  2. Shorten the maximum life of account passwords.

  3. Increase the minimum password length.

  4. Enforce account lockout policies.

Answer: A Explanation:

Password complexity often requires the use of a minimum of three out of four standard character types for a password. The more characters in a password that includes some character complexity, the more resistant it is to brute force attacks.

Question No: 930 – (Topic 5)

After Ann, a user, logs into her banking websites she has access to her financial institution mortgage, credit card, and brokerage websites as well. Which of the following is being described?

  1. Trusted OS

  2. Mandatory access control

  3. Separation of duties

  4. Single sign-on

Answer: D Explanation:

Single sign-on means that once a user (or other subject) is authenticated into a realm, re- authentication is not required for access to resources on any realm entity. The question states that when Ann logs into her banking websites she has access to her financial institution mortgage, credit card, and brokerage websites as well. This describes an SSO scenario.

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