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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Troubleshooting | 24% | - Troubleshooting methodology
|
| Topic 2: Network Operations | 19% | - Documentation and diagrams
|
| Topic 3: Network Security | 14% | - Authentication and authorization
|
| Topic 4: Networking Concepts | 23% | - OSI model concepts
|
| Topic 5: Network Implementation | 20% | - Switching technologies
|
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NEW QUESTION # 588
Which of the following is used to redistribute traffic between one source and multiple servers that run the same service?
Answer: C
Explanation:
A load balancer distributes incoming traffic across multiple servers running the same service to improve availability, performance, and scalability.
NEW QUESTION # 589
SIMULATION
A network administrator has been tasked with configuring a network for a new corporate office.
The office consists of two buildings, separated by 50 feet with no physical connectivity. The configuration must meet the following requirements:
- Devices in both buildings should be able to access the Internet.
- Security insists that all Internet traffic be inspected before entering the network.
- Desktops should not see traffic destined for other devices.
INSTRUCTIONS
Select the appropriate network device for each location. If applicable, click on the magnifying glass next to any device which may require configuration updates and make any necessary changes.
Not all devices will be used, but all locations should be filled.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
Devices in both buildings should be able to access the Internet.
Security insists that all Internet traffic be inspected before entering the network.
Desktops should not see traffic destined for other devices.
Here is the corrected layout with explanation:
Building A:
Switch: Correctly placed to connect all desktops.
Firewall: Correctly placed to inspect all incoming and outgoing traffic.
Building B:
Switch: Not needed. Instead, place a Wireless Access Point (WAP) to provide wireless connectivity for laptops and mobile devices.
Between Buildings:
Wireless Range Extender: Correctly placed to provide connectivity between the buildings wirelessly.
Connection to the Internet:
Router: Correctly placed to connect to the Internet and route traffic between the buildings and the Internet.
Firewall: The firewall should be placed between the router and the internal network to inspect all traffic before it enters the network.
Corrected Setup:
Top-left (Building A): Switch
Bottom-left (Building A): Firewall (inspect traffic before it enters the network) Top-middle (Internet connection): Router Bottom-middle (between buildings): Wireless Range Extender Top-right (Building B): Wireless Access Point (WAP) In this corrected setup, the WAP in Building B will connect wirelessly to the Wireless Range Extender, which is connected to the Router. The Router is connected to the Firewall to ensure all traffic is inspected before it enters the network.
Configuration for Wireless Range Extender:
SSID: CORP
Security Settings: WPA2 or WPA2 - Enterprise
Key or Passphrase: [Enter a strong passphrase]
Mode: [Set based on your network plan]
Channel: [Set based on your network plan]
Speed: Auto
Duplex: Auto
With these settings, both buildings will have secure access to the Internet, and all traffic will be inspected by the firewall before entering the network. Desktops and other devices will not see traffic intended for others, maintaining the required security and privacy.
To configure the wireless range extender for security, follow these steps:
SSID (Service Set Identifier):
Ensure the SSID is set to "CORP" as shown in the exhibit.
Security Settings:
WPA2 or WPA2 - Enterprise: Choose one of these options for stronger security. WPA2- Enterprise provides more robust security with centralized authentication, which is ideal for a corporate environment.
Key or Passphrase:
If you select WPA2, enter a strong passphrase in the "Key or Passphrase" field.
If you select WPA2 - Enterprise, you will need to configure additional settings for authentication servers, such as RADIUS, which is not shown in the exhibit.
Wireless Mode and Channel:
Set the appropriate mode and channel based on your network design and the environment to avoid interference. These settings are not specified in the exhibit, so set them according to your network plan.
Wired Speed and Duplex:
Set the speed to "Auto" unless you have specific requirements for 100 or 1000 Mbps.
Set the duplex to "Auto" unless you need to specify half or full duplex based on your network equipment.
Save Configuration:
After making the necessary changes, click the "Save" button to apply the settings.
Here is how the configuration should look after adjustments:
SSID: CORP
Security Settings: WPA2 or WPA2 - Enterprise
Key or Passphrase: [Enter a strong passphrase]
Mode: [Set based on your network plan]
Channel: [Set based on your network plan]
Speed: Auto
Duplex: Auto
Once these settings are configured, your wireless range extender will provide secure connectivity for devices in both buildings.
Firewall setting to to ensure complete compliance with the requirements and best security practices, consider the following adjustments and additions:
DNS Rule: This rule allows DNS traffic from the internal network to any destination, which is fine.
HTTPS Outbound: This rule allows HTTPS traffic from the internal network (assuming
192.169.0.1/24 is a typo and should be 192.168.0.1/24) to any destination, which is also good for secure web browsing.
Management: This rule allows SSH access to the firewall for management purposes, which is necessary for administrative tasks.
HTTPS Inbound: This rule denies inbound HTTPS traffic to the internal network, which is good unless you have a web server that needs to be accessible from the internet.
HTTP Inbound: This rule denies inbound HTTP traffic to the internal network, which is correct for security purposes.
Suggested Additional Settings:
Permit General Outbound Traffic: Allow general outbound traffic for web access, email, etc.
Block All Other Traffic: Ensure that all other traffic is blocked to prevent unauthorized access.
Firewall Configuration Adjustments:
Correct the Network Typo:
Ensure that the subnet 192.169.0.1/24 is corrected to 192.168.0.1/24.
Permit General Outbound Traffic:
Rule Name: General Outbound
Source: 192.168.0.1/24
Destination: ANY
Service: ANY
Action: PERMIT
Deny All Other Traffic:
Rule Name: Block All
Source: ANY
Destination: ANY
Service: ANY
Action: DENY
Here is how your updated firewall settings should look:
Rule Name Source Destination Service Action
DNS Rule 192.168.0.1/24 ANY DNS PERMIT
HTTPS Outbound 192.168.0.1/24 ANY HTTPS PERMIT
Management ANY 192.168.0.1/24 SSH PERMIT
HTTPS Inbound ANY 192.168.0.1/24 HTTPS DENY
HTTP Inbound ANY 192.168.0.1/24 HTTP DENY
General Outbound 192.168.0.1/24 ANY ANY PERMIT
Block All ANY ANY ANY DENY
These settings ensure that:
Internal devices can access DNS and HTTPS services externally.
Management access via SSH is permitted.
Inbound HTTP and HTTPS traffic is denied unless otherwise specified.
General outbound traffic is allowed.
All other traffic is blocked by default, ensuring a secure environment.
Make sure to save the settings after making these adjustments.
NEW QUESTION # 590
Which of the following network topologies contains a direct connection between every node in the network?
Answer: C
Explanation:
In a mesh topology, every node is directly connected to every other node. This provides high redundancy and reliability, as there are multiple paths for data to travel between nodes. This topology is often used in networks where high availability is crucial.References:CompTIA Network+ study materials.
NEW QUESTION # 591
Which of the following is the correct order of components in a bottom-up approach for the three-tier hierarchical model?
Answer: A
Explanation:
The three-tier hierarchical model in network design consists of three layers: access, distribution, and core. The access layer is where devices like PCs and printers connect to the network. The distribution layer aggregates the data received from the access layer switches before it is transmitted to the core layer, which is responsible for high-speed data transfer and routing. This approach improves scalability and performance in larger networks. References: CompTIA Network+ Exam Objectives and official study guides.
NEW QUESTION # 592
Which of the following can protect network equipment from voltage variations?
Answer: D
Explanation:
A UPS (Uninterruptible Power Supply) protects network equipment from voltage variations, such as surges, spikes, sags, and power outages. It provides battery backup and regulates power to ensure clean, stable electricity reaches the devices.
MDF (Main Distribution Frame) is a wiring infrastructure, not a power protection device.
Power strips may offer convenience but usually provide no protection from voltage issues unless they include surge suppression (even then, not regulation).
PDU (Power Distribution Unit) distributes power but does not regulate or protect against voltage fluctuations.
Only the UPS actively protects against voltage variations.
NEW QUESTION # 593
......
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