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New Question 1:

Company A has noticed abnormal behavior targeting their SQL server on the network from a rogue IP address. The company uses the following internal IP address ranges: 192.10.1.0/24 for the corporate site and 192.10.2.0/24 for the remote

site. The Telco router interface uses the 192.10.5.0/30 IP range.

Instructions: Click on the simulation button to refer to the Network Diagram for Company A.

Click on Router 1, Router 2, and the Firewall to evaluate and configure each device.

Task 1: Display and examine the logs and status of Router 1, Router 2, and Firewall interfaces.

Task 2: Reconfigure the appropriate devices to prevent the attacks from continuing to target the SQL server and other servers on the corporate network.

Hot Area:

Correct Answer:

We have traffic coming from two rogue IP addresses: 192.10.3.204 and 192.10.3.254 (both in the 192.10.30.0/24 subnet) going to IPs in the corporate site subnet (192.10.1.0/24) and the remote site subnet (192.10.2.0/24). We need to Deny (block) this traffic at the firewall by ticking the following two checkboxes:

New Question 2:

IT staff within a company often conduct remote desktop sharing sessions with vendors to troubleshoot vendor product-related issues. Drag and drop the following security controls to match the associated security concern. Options may be used once or not at all.

Select and Place:

Correct Answer:

Vendor may accidentally or maliciously make changes to the IT system – Allow view-only access.

With view-only access, the third party can view the desktop but cannot interact with it. In other words, they cannot control the keyboard or mouse to make any changes.

Desktop sharing traffic may be intercepted by network attackers – Use SSL for remote sessions.

SSL (Secure Sockets Layer) encrypts data in transit between computers. If an attacker intercepted the traffic, the data would be encrypted and therefore unreadable to the attacker.

No guarantees that shoulder surfing attacks are not occurring at the vendor – Identified control gap.

Shoulder surfing is where someone else gains information by looking at your computer screen. This should be identified as a risk. A control gap occurs when there are either insufficient or no actions taken to avoid or mitigate a significant risk.

Vendor may inadvertently see confidential material from the company such as email and IMs – Limit desktop session to certain windows.

The easiest way to prevent a third party from viewing your emails and IMs is to close the email and IM application windows for the duration of the desktop sharing session.

New Question 3:

A security consultant is considering authentication options for a financial institution. The following authentication options are available security mechanism to the appropriate use case. Options may be used once.

Select and Place:

Correct Answer:

New Question 4:

Drag and drop the cloud deployment model to the associated use-case scenario. Options may be used only once or not at all.

Select and Place:

Correct Answer:

New Question 5:

A security administrator must configure the database server shown below the comply with the four requirements listed. Drag and drop the appropriate ACL that should be configured on the database server to its corresponding requirement. Answer options may be used once or not at all.

Select and Place:

Correct Answer:

New Question 6:

DRAG DROP

A vulnerability scan with the latest definitions was performed across Sites A and B.

INSTRUCTIONS

Match each relevant finding to the affected host.

After associating the finding with the appropriate host(s), click the host to select the appropriate corrective action for that finding.

Each finding may be used more than once.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Select and Place:

Correct Answer:

New Question 7:

DRAG DROP

An organization is planning for disaster recovery and continuity of operations.

INSTRUCTIONS

Review the following scenarios and instructions. Match each relevant finding to the affected host.

After associating scenario 3 with the appropriate host(s), click the host to select the appropriate corrective action for that finding.

Each finding may be used more than once.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Select and Place:

Correct Answer:

New Question 8:

SIMULATION

Compliance with company policy requires a quarterly review of firewall rules. A new administrator is asked to conduct this review on the internal firewall sitting between several internal networks. The intent of this firewall is to make traffic more

restrictive. Given the following information answer the questions below:

User Subnet: 192.168.1.0/24 Server Subnet: 192.168.2.0/24 Finance Subnet:192.168.3.0/24

Instructions: To perform the necessary tasks, please modify the DST port, Protocol, Action, and/or Rule Order columns. Firewall ACLs are read from the top down

Task 1) An administrator added a rule to allow their machine terminal server access to the server subnet. This rule is not working. Identify the rule and correct this issue.

Task 2) All web servers have been changed to communicate solely over SSL. Modify the appropriate rule to allow communications.

Task 3) An administrator added a rule to block access to the SQL server from anywhere on the network. This rule is not working. Identify and correct this issue.

Task 4) Other than allowing all hosts to do network time and SSL, modify a rule to ensure that no other traffic is allowed.

Check the solution below.

Check the answer below

Correct Answer: Check the answer in explanation.

Task 1) An administrator added a rule to allow their machine terminal server access to the server subnet. This rule is not working. Identify the rule and correct this issue.

The rule shown in the image below is the rule in question. It is not working because the action is set to Deny.

This needs to be set to Permit.

Task 2) All web servers have been changed to communicate solely over SSL. Modify the appropriate rule to allow communications.

The web servers rule is shown in the image below. Port 80 (HTTP) needs to be changed to port 443 for HTTPS (HTTP over SSL).

Task 3) An administrator added a rule to block access to the SQL server from anywhere on the network. This rule is not working. Identify and correct this issue.

The SQL Server rule is shown in the image below. It is not working because the protocol is wrong. It should be TCP, not UDP.

Task 4) Other than allowing all hosts to do network time and SSL, modify a rule to ensure that no other traffic is allowed.

The network time rule is shown in the image below.

However, this rule is not being used because the `any\’ rule shown below allows all traffic and the rule is placed above the network time rule. To block all other traffic, the `any\’ rule needs to be set to Deny, not Permit and the rule needs to be

placed below all the other rules (it needs to be placed at the bottom of the list to the rule is enumerated last).

New Question 9:

SIMULATION

As a security administrator, you are asked to harden a server running Red Hat Enterprise Server 5.5 64-bit.

This server is being used as a DNS and time server. It is not used as a database, web server, or print server. There are no wireless connections to the server, and it does not need to print.

The command window will be provided along with root access. You are connected via a secure shell with root access.

You may query help for a list of commands.

Instructions:

You need to disable and turn off unrelated services and processes.

It is possible to simulate a crash of your server session. The simulation can be reset, but the server cannot be rebooted. If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Correct Answer: Check the answer in explanation.

See the below In Order to deactivate web services, database services and print service, we can do following things 1) deactivate its services /etc/init.d/apache2 stop /etc/init.d/mysqld stop 2) close ports for these services Web Server

iptables -I INPUT -p tcp -m tcp –dport 443 -j REJECTservice iptables save Print Server iptables -I INPUT -p tcp -m tcp –dport 631 -j REJECTservice iptables save

Database Server iptables -I INPUT -p tcp -m tcp –dport <> -j REJECTservice iptables save 3) Kill the process any running for the same ps -aef|grep mysql kill -9 <>

New Question 10:

SIMULATION

Correct Answer: Check the answer in explanation.

Please see the below

Step 1: Verify that the certificate is valid or not. In case of any warning message, cancel the download.

Step 2: If certificate issue is not there then, download the file in your system.

Step 3: Calculate the hash value of the downloaded file.

Step 4: Match the hash value of the downloaded file with the one which you selected on the website.

Step 5: Install the file if the hash value matches.

New Question 11:

SIMULATION

Compliance with company policy requires a quarterly review of firewall rules. You are asked to conduct a review on the internal firewall sitting between several internal networks. The intent of this firewall is to make traffic more secure. Given

the following information perform the tasks listed below:

Untrusted zone: 0.0.0.0/0

User zone: USR 10.1.1.0/24

User zone: USR2 10.1.2.0/24

DB zone: 10.1.0/24

Web application zone: 10.1.5.0/24

Management zone: 10.1.10.0/24 Web server: 10.1.5.50 MS-SQL server: 10.1.4.70

MGMT platform: 10.1.10.250

Task 1) A rule was added to prevent the management platform from accessing the internet. This rule is not working. Identify the rule and correct this issue.

Task 2) The firewall must be configured so that the SQL server can only receive requests from the web server.

Task 3) The web server must be able to receive unencrypted requests from hosts inside and outside the corporate network.

Task 4) Ensure the final rule is an explicit deny.

Task 5) Currently the user zone can access internet websites over an unencrypted protocol. Modify a rule so that user access to websites is over secure protocols only.

Instructions: To perform the necessary tasks, please modify the DST port, SRC zone, Protocol, Action, and/or Rule Order columns. Type ANY to include all ports. Firewall ACLs are read from the top down. Once you have met the simulation

requirements, click Save. When you have completed the simulation, please select the Done button to submit. Once the simulation is submitted, please select the Next button to continue.

Correct Answer: Check the answer in explanation.

Explanation:

Task 1: A rule was added to prevent the management platform from accessing the internet. This rule is not working. Identify the rule and correct this issue.

In Rule no. 1 edit the Action to Deny to block internet access from the management platform.

Task 2: The firewall must be configured so that the SQL server can only receive requests from the web server. In Rule no. 6 from top, edit the Action to be Permit.

Task 3: The web server must be able to receive unencrypted requests from hosts inside and outside the corporate network. In rule no. 5 from top, change the DST port to Any from 80 to allow all unencrypted traffic.

Task 4: Ensure the final rule is an explicit deny

Enter this at the bottom of the access list i.e. the line at the bottom of the rule:

Task 5: Currently the user zone can access internet websites over an unencrypted protocol. Modify a rule so that user access to websites is over secure protocols only. In Rule number 4 from top, edit the DST port to 443 from 80

New Question 12:

SIMULATION

An administrator wants to install a patch to an application.

INSTRUCTIONS

Given the scenario, download, verify, and install the patch in the most secure manner.

The last install that is completed will be the final submission.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Correct Answer: See the below.

In this case the second link should be used (This may vary in actual exam). The first link showed the following error so it should not be used.

Also, Two of the link choices used HTTP and not HTTPS as shown when hovering over the links as shown:

Since we need to do this in the most secure manner possible, they should not be used.

Finally, the second link was used and the MD5 utility of MD5sum should be used on the install.exe file as shown. Make sure that the hash matches.

Finally, type in install.exe to install it and make sure there are no signature verification errors.

New Question 13:

SIMULATION

As a security administrator, you are asked to harden a server running Red Hat Enterprise Server 5.5 64-bit.

This server is being used as a DNS and time server. It is not used as a database, web server, or print server. There are no wireless connections to the server, and it does not need to print.

The command window will be provided along with root access. You are connected via a secure shell with root access.

You may query help for a list of commands.

Instructions:

You need to disable and turn off unrelated services and processes.

It is possible to simulate a crash of your server session. The simulation can be reset, but the server cannot be rebooted.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Correct Answer: See the below.

New Question 14:

SIMULATION

You are a security analyst tasked with interpreting an Nmap scan output from Company A\’s privileged network.

The company\’s hardening guidelines indicate the following:

1.

There should be one primary server or service per device.

2.

Only default ports should be used.

3.

Non-secure protocols should be disabled.

INSTRUCTIONS

Using the Nmap output, identify the devices on the network and their roles, and any open ports that should be closed. For each device found, add a device entry to the Devices Discovered list, with the following information:

1.

The IP address of the device

2.

The primary server or service of the device

3.

The protocol(s) that should be disabled based on the hardening guidelines

To select multiple protocols, use CTRL+CLICK.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

Correct Answer: Check the answer in explanation.

10.1.45.65 – FTP Server – Disable 8080

10.1.45.66 – Email Serve – Disable 25 and 415

10.1.45.67 – Web Server – Disable 21, 80

10.1.45.68 – UTM Appliance – Disable 21

New Question 15:

SIMULATION

A product development team has submitted code snippets for review pnor to release INSTRUCTIONS.

Analyze the code snippets and then select one vulnerability and one fix for each code snippet If at any time you would like to bang back the initial state of the simulation, please click the Reset All button.

A. Check the answer in below.

Correct Answer: A

…

Download the CompTIA CAS-004 PDF for free sharing online:

https://drive.google.com/file/d/1gPzIc5NxyzqTe5jbFzvmofpUGr5d4CUr/
https://drive.google.com/file/d/1IbvnTbTz7x2VbxDQ1GHCSEII5xMN55Pn/

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