[Free] 2018(June) Dumps4cert CompTIA RC0-C02 Dumps with VCE and PDF Download 51-60

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CompTIA Advanced Security Practitioner (CASP) Recertification Exam for Continuing Education

Question No: 51 – (Topic 1)

Which of the following describes a risk and mitigation associated with cloud data storage?

  1. Risk: Shared hardware caused data leakage Mitigation: Strong encryption at rest

  2. Risk: Offsite replication Mitigation: Multi-site backups

  3. Risk: Data loss from de-duplication

    Mitigation: Dynamic host bus addressing

  4. Risk: Combined data archiving

Mitigation: Two-factor administrator authentication

Answer: A Explanation:

With cloud data storage, the storage provider will have large enterprise SANs providing large pools of storage capacity. Portions of the storage pools are assigned to customers. The risk is that multiple customers are storing their data on the same physical hardware storage devices. This presents a risk (usually a very small risk, but a risk all the same) of other customers using the same cloud storage hardware being able to view your data.

The mitigation of the risk is to encrypt your data stored on the SAN. Then the data would be unreadable even if another customer was able to access it.

Question No: 52 – (Topic 1)

A company decides to purchase commercially available software packages. This can introduce new security risks to the network. Which of the following is the BEST description of why this is true?

  1. Commercially available software packages are typically well known and widely available. Information concerning vulnerabilities and viable attack patterns are never revealed by the developer to avoid lawsuits.

  2. Commercially available software packages are often widely available. Information concerning vulnerabilities is often kept internal to the company that developed the software.

  3. Commercially available software packages are not widespread and are only available in limited areas. Information concerning vulnerabilities is often ignored by business managers.

  4. Commercially available software packages are well known and widely available. Information concerning vulnerabilities and viable attack patterns are always shared within the IT community.

Answer: B Explanation:

Commercially available software packages are often widely available. Huge companies like Microsoft develop software packages that are widely available and in use on most computers. Most companies that develop commercial software make their software available through many commercial outlets (computer stores, online stores etc).

Information concerning vulnerabilities is often kept internal to the company that developed the software. The large companies that develop commercial software packages are accountable for the software. Information concerning vulnerabilities being made available

could have a huge financial cost to the company in terms of loss of reputation and lost revenues. Information concerning vulnerabilities is often kept internal to the company at least until a patch is available to fix the vulnerability.

Question No: 53 – (Topic 1)

An administrator has four virtual guests on a host server. Two of the servers are corporate SQL servers, one is a corporate mail server, and one is a testing web server for a small group of developers. The administrator is experiencing difficulty connecting to the host server during peak network usage times. Which of the following would allow the administrator to securely connect to and manage the host server during peak usage times?

  1. Increase the virtual RAM allocation to high I/O servers.

  2. Install a management NIC and dedicated virtual switch.

  3. Configure the high I/O virtual servers to use FCoE rather than iSCSI.

  4. Move the guest web server to another dedicated host.

Answer: B

Question No: 54 – (Topic 1)

Which of the following technologies prevents an unauthorized HBA from viewing iSCSI target information?

  1. Deduplication

  2. Data snapshots

  3. LUN masking

  4. Storage multipaths

Answer: C Explanation:

A logical unit number (LUN) is a unique identifier that designates individual hard disk devices or grouped devices for address by a protocol associated with a SCSI, iSCSI, Fibre Channel (FC) or similar interface. LUNs are central to the management of block storage arrays shared over a storage area network (SAN).

LUN masking subdivides access to a given port. Then, even if several LUNs are accessed through the same port, the server masks can be set to limit each server#39;s access to the

appropriate LUNs. LUN masking is typically conducted at the host bus adapter (HBA) or switch level.

Question No: 55 – (Topic 1)

An administrator wants to enable policy based flexible mandatory access controls on an open source OS to prevent abnormal application modifications or executions. Which of the following would BEST accomplish this?

  1. Access control lists

  2. SELinux

  3. IPtables firewall

  4. HIPS

Answer: B Explanation:

The most common open source operating system is LINUX.

Security-Enhanced Linux (SELinux) was created by the United States National Security Agency (NSA) and is a Linux kernel security module that provides a mechanism for supporting access control security policies, including United States Department of Defense-style mandatory access controls (MAC).

NSA Security-enhanced Linux is a set of patches to the Linux kernel and some utilities to incorporate a strong, flexible mandatory access control (MAC) architecture into the major subsystems of the kernel. It provides an enhanced mechanism to enforce the separation of information based on confidentiality and integrity requirements, which allows threats of tampering and bypassing of application security mechanisms to be addressed and enables the confinement of damage that can be caused by malicious or flawed applications.

Question No: 56 – (Topic 1)

Company ABC is hiring customer service representatives from Company XYZ. The representatives reside at Company XYZ’s headquarters. Which of the following BEST prevents Company XYZ representatives from gaining access to unauthorized Company ABC systems?

  1. Require each Company XYZ employee to use an IPSec connection to the required

    systems

  2. Require Company XYZ employees to establish an encrypted VDI session to the required systems

  3. Require Company ABC employees to use two-factor authentication on the required systems

  4. Require a site-to-site VPN for intercompany communications

Answer: B Explanation:

VDI stands for Virtual Desktop Infrastructure. Virtual desktop infrastructure is the practice of hosting a desktop operating system within a virtual machine (VM) running on a centralized server.

Company ABC can configure virtual desktops with the required restrictions and required access to systems that the users in company XYZ require. The users in company XYZ can then log in to the virtual desktops over a secure encrypted connection and then access authorized systems only.

Question No: 57 – (Topic 1)

A storage as a service company implements both encryption at rest as well as encryption in transit of customers’ data. The security administrator is concerned with the overall security of the encrypted customer data stored by the company servers and wants the development team to implement a solution that will strengthen the customer’s encryption key. Which of the following, if implemented, will MOST increase the time an offline password attack against the customers’ data would take?

  1. key = NULL ; for (int i=0; ilt;5000; i ) { key = sha(key password) }

  2. password = NULL ; for (int i=0; ilt;10000; i ) { password = sha256(key) }

  3. password = password sha(password salt) aes256(password salt)

  4. key = aes128(sha256(password), password))

Answer: A

Explanation: References:

http://stackoverflow.com/questions/4948322/fundamental-difference-between-hashing-and- encryption-algorithms

Question No: 58 – (Topic 1)

The organization has an IT driver on cloud computing to improve delivery times for IT solution provisioning. Separate to this initiative, a business case has been approved for replacing the existing banking platform for credit card processing with a newer offering. It is the security practitioner’s responsibility to evaluate whether the new credit card processing platform can be hosted within a cloud environment. Which of the following BEST balances the security risk and IT drivers for cloud computing?

  1. A third-party cloud computing platform makes sense for new IT solutions. This should be endorsed going forward so as to align with the IT strategy. However, the security practitioner will need to ensure that the third-party cloud provider does regular penetration tests to ensure that all data is secure.

  2. Using a third-party cloud computing environment should be endorsed going forward. This aligns with the organization’s strategic direction. It also helps to shift any risk and regulatory compliance concerns away from the company’s internal IT department. The next step will be to evaluate each of the cloud computing vendors, so that a vendor can then be selected for hosting the new credit card processing platform.

  3. There may be regulatory restrictions with credit cards being processed out of country or processed by shared hosting providers. A private cloud within the company should be considered. An options paper should be created which outlines the risks, advantages, disadvantages of relevant choices and it should recommended a way forward.

  4. Cloud computing should rarely be considered an option for any processes that need to be significantly secured. The security practitioner needs to convince the stakeholders that the new platform can only be delivered internally on physical infrastructure.

Answer: C

Question No: 59 – (Topic 1)

A vulnerability scanner report shows that a client-server host monitoring solution operating in the credit card corporate environment is managing SSL sessions with a weak algorithm which does not meet corporate policy. Which of the following are true statements? (Select TWO).

  1. The X509 V3 certificate was issued by a non trusted public CA.

  2. The client-server handshake could not negotiate strong ciphers.

  3. The client-server handshake is configured with a wrong priority.

  4. The client-server handshake is based on TLS authentication.

  5. The X509 V3 certificate is expired.

  6. The client-server implements client-server mutual authentication with different certificates.

Answer: B,C Explanation:

The client-server handshake could not negotiate strong ciphers. This means that the system is not configured to support the strong ciphers provided by later versions of the SSL protocol. For example, if the system is configured to support only SSL version 1.1, then only a weak cipher will be supported.

The client-server handshake is configured with a wrong priority. The client sends a list of SSL versions it supports and priority should be given to the highest version it supports. For example, if the client supports SSL versions 1.1, 2 and 3, then the server should use version 3. If the priority is not configured correctly (if it uses the lowest version) then version

1.1 with its weak algorithm will be used.

Question No: 60 – (Topic 1)

A company provides on-demand virtual computing for a sensitive project. The company implements a fully virtualized datacenter and terminal server access with two-factor authentication for access to sensitive data. The security administrator at the company has uncovered a breach in data confidentiality. Sensitive data was found on a hidden directory within the hypervisor. Which of the following has MOST likely occurred?

  1. A stolen two factor token and a memory mapping RAM exploit were used to move data from one virtual guest to an unauthorized similar token.

  2. An employee with administrative access to the virtual guests was able to dump the guest memory onto their mapped disk.

  3. A host server was left un-patched and an attacker was able to use a VMEscape attack to gain unauthorized access.

  4. A virtual guest was left un-patched and an attacker was able to use a privilege escalation attack to gain unauthorized access.

Answer: C

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