CompTIA CompTIA Security+ RC0-501 Questions & Answers

• Question 251:

  When designing a web based client server application with single application server and database cluster backend, input validation should be performed:

  A. On the client

  B. Using database stored procedures

  C. On the application server

  D. Using HTTPS

  Correct Answer: C

• Question 252:

  Which of the following delineates why it is important to perform egress filtering and monitoring on Internet connected security zones of interfaces on a firewall?

  A. Egress traffic is more important than ingress traffic for malware prevention

  B. To rebalance the amount of outbound traffic and inbound traffic

  C. Outbound traffic could be communicating to known botnet sources

  D. To prevent DDoS attacks originating from external network

  Correct Answer: B

• Question 253:

  A datacenter manager has been asked to prioritize critical system recovery priorities. Which of the following is the MOST critical for immediate recovery?

  A. Communications software

  B. Operating system software

  C. Weekly summary reports to management

  D. Financial and production software

  Correct Answer: B

• Question 254:

  A security administrator needs an external vendor to correct an urgent issue with an organization's physical access control system (PACS). The PACS does not currently have internet access because it is running a legacy operation system. Which of the following methods should the security administrator select the best balances security and efficiency?

  A. Temporarily permit outbound internet access for the pacs so desktop sharing can be set up

  B. Have the external vendor come onsite and provide access to the PACS directly

  C. Set up VPN concentrator for the vendor and restrict access to the PACS using desktop sharing

  D. Set up a web conference on the administrator's pc; then remotely connect to the pacs

  Correct Answer: C

• Question 255:

  Six months into development, the core team assigned to implement a new internal piece of software must convene to discuss a new requirement with the stake holders. A stakeholder identified a missing feature critical to the organization, which must be implemented. The team needs to validate the feasibility of the newly introduced requirement and ensure it does not introduce new vulnerabilities to the software and other applications that will integrate with it. Which of the following BEST describes what the company?

  A. The system integration phase of the SDLC

  B. The system analysis phase of SSDSLC

  C. The system design phase of the SDLC

  D. The system development phase of the SDLC

  Correct Answer: B

• Question 256:

  A company is investigating a data compromise where data exfiltration occurred. Prior to the investigation, the supervisor terminates an employee as a result of the suspected data loss. During the investigation, the supervisor is absent for the interview, and little evidence can be provided form the role-based authentication system in use by the company. The situation can be identified for future mitigation as which of the following?

  A. Job rotation

  B. Log failure

  C. Lack of training

  D. Insider threat

  Correct Answer: B

• Question 257:

  Which of the following can be used to control specific commands that can be executed on a network infrastructure device?

  A. LDAP

  B. Kerberos

  C. SAML

  D. TACACS+

  Correct Answer: D

• Question 258:

  Company XYZ has decided to make use of a cloud-based service that requires mutual, certificatebased authentication with its users. The company uses SSL-inspecting IDS at its network boundary and is concerned about the confidentiality of the mutual authentication. Which of the following model prevents the IDS from capturing credentials used to authenticate users to the new service or keys to decrypt that communication?

  A. Use of OATH between the user and the service and attestation from the company domain

  B. Use of active directory federation between the company and the cloud-based service

  C. Use of smartcards that store x.509 keys, signed by a global CA

  D. Use of a third-party, SAML-based authentication service for attestation

  Correct Answer: B

• Question 259:

  A server administrator needs to administer a server remotely using RDP, but the specified port is closed on the outbound firewall on the network. The access the server using RDP on a port other than the typical registered port for the RDP protocol?

  A. TLS

  B. MPLS

  C. SCP

  D. SSH

  Correct Answer: A

• Question 260:

  A company is deploying a new VoIP phone system. They require 99.999% uptime for their phone service and are concerned about their existing data network interfering with the VoIP phone system. The core switches in the existing data network are almost fully saturated. Which of the following options will pro-vide the best performance and availability for both the VoIP traffic, as well as the traffic on the existing data network?

  A. Put the VoIP network into a different VLAN than the existing data network.

  B. Upgrade the edge switches from 10/100/1000 to improve network speed

  C. Physically separate the VoIP phones from the data network

  D. Implement flood guards on the data network

  Correct Answer: A