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NEW QUESTION # 111
A network administrator is setting up a firewall to protect the organization's network from external threats.
Which of the following should the administrator consider first when configuring the firewall?
Answer: A
Explanation:
When configuring a firewall, the first step is identifying which ports, protocols, and services are required for normal business operations. This ensures only legitimate traffic is allowed. After establishing the required rules, a default deny rule is added for security.
B). Deny all rule is important, but it should come after defining required rules.
C). VPN access is a service to configure, but only after determining baseline needs.
D). Outbound traffic policies are part of refinement, not the first consideration.
References (CompTIA Network+ N10-009):
Domain: Network Security - Firewall configuration, rule order, least privilege.
NEW QUESTION # 112
Which of the following most directly secures sensitive information on a network?
Answer: B
Explanation:
The option that most directly secures sensitive information on the network is data-in-transit encryption. This ensures that data packets are unreadable to attackers who intercept them while moving across the network.
Protocols such as TLS, HTTPS, IPsec, and SSH protect confidentiality and integrity of sensitive information.
B). Principle of least privilege (PoLP) secures access control but does not directly protect data in motion.
C). Role-based access control (RBAC) enforces permissions but again does not secure the data while transmitted.
D). Multifactor authentication (MFA) strengthens identity verification but does not directly protect the data itself once transmitted.
Thus, while all options contribute to overall security, encryption of data-in-transit most directly addresses protection of sensitive information on the network.
References (CompTIA Network+ N10-009):
Domain: Network Security - Encryption methods, confidentiality, data-in-transit protection.
NEW QUESTION # 113
A network administrator installed anew VLANto the network after a company added an additional floor to the office. Users areunable to obtain an IP addresson the new VLAN, but ports on existing VLANs are working properly. Which of the following configurations should the administrator update?
Answer: D
Explanation:
Comprehensive and Detailed Explanation:
When anew VLAN is created, it typically exists on a different subnet. IfDHCP servers are on a different VLAN, the networkneeds an IP helper addressto forward DHCP requests correctly. Without it, clients in the new VLANwon't receive an IP address.
Breakdown of Options:
* A. Scope size- Increasing the DHCP scope would not resolve the issue if requestsaren't reaching the server.
* B. Address reservations- Reservations only assign specific addresses to devices; they do not fix DHCP communication issues.
* C. Lease time- Changing the lease timedoes not impact DHCP functionality across VLANs.
* D. IP helper-Correct answer.This forwardsDHCP requestsacross VLANs to the DHCP server.
NEW QUESTION # 114
You have replaced a fiber-optic patch cord, but the link lights on the switch remain off. What should you do to troubleshoot the issue?
Answer: C
Explanation:
Fiber connections require Tx on one end to connect to Rx on the other end. If the patch cord is replaced and link lights remain off, the most common cause is that the connectors are reversed. Swapping (transposing) the connectors ensures proper transmit/receive alignment.
* A. Replacing the transceiver may eventually be necessary, but only after verifying correct connections.
* B. Restarting the switchport won't resolve a physical misconnection.
* D. Using multimode fiber would be incorrect here, as the link was designed for single-mode (10 miles
/16 km requires SMF).
References (CompTIA Network+ N10-009):
* Domain: Network Troubleshooting - Fiber connectivity, Tx/Rx alignment, link light diagnostics.
NEW QUESTION # 115
A network engineer wants to implement a new IDS between the switch and a router connected to the LAN. The engineer does not want to introduce any latency by placing the IDS in line with the gateway. The engineer does want to ensure that the IDS sees all packets without any loss. Which of the following is the best way for the engineer to implement the IDS?
Answer: B
Explanation:
To ensure that an IDS sees all packets without any loss and without introducing latency, the best approach is to use a port mirror, also known as a SPAN (Switched Port Analyzer) port. Port mirroring copies network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This method allows the IDS to monitor traffic passively without being in the direct path of network traffic, thus avoiding any additional latency.
NEW QUESTION # 116
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