HIGH EFFICIENT N10-009 GUIDE TORRENT PRACTICE MATERIALS: COMPTIA NETWORK+ CERTIFICATION EXAM - TESTPDF

High efficient N10-009 Guide Torrent Practice Materials: CompTIA Network+ Certification Exam - TestPDF

High efficient N10-009 Guide Torrent Practice Materials: CompTIA Network+ Certification Exam - TestPDF

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CompTIA Network+ Certification Exam Sample Questions (Q217-Q222):

NEW QUESTION # 217
A network engineer is designing a secure communication link between two sites. The entire data stream needs to remain confidential. Which of the following will achieve this goal?

  • A. GRE
  • B. ESP
  • C. AH
  • D. IKE

Answer: B

Explanation:
* Definition of ESP (Encapsulating Security Payload):
* ESP is a part of the IPsec protocol suite designed to provide confidentiality, integrity, and authenticity of data by encrypting the payload and optional ESP trailer.
* Ensuring Confidentiality:
* Encryption:ESP encrypts the payload, ensuring that the data remains confidential during transmission. Only authorized parties with the correct decryption keys can access the data.
* Modes of Operation:ESP can operate in transport mode (encrypts only the payload) or tunnel mode (encrypts the entire IP packet), both providing strong encryption to secure data between sites.
* Comparison with Other Protocols:
* GRE (Generic Routing Encapsulation):A tunneling protocol that does not provide encryption or security features.
* IKE (Internet Key Exchange):A protocol used to set up a secure, authenticated communications channel, but it does not encrypt the data itself.
* AH (Authentication Header):Provides integrity and authentication for IP packets but does not encrypt the payload.
* Implementation:
* Use ESP as part of an IPsec VPN configuration to encrypt and secure communication between
* two sites. This involves setting up IPsec policies and ensuring both endpoints are configured to use ESP for data encryption.
References:
* CompTIA Network+ study materials on IPsec and secure communication protocols.


NEW QUESTION # 218
Which of the following steps in the troubleshooting methodology includes checking logs for recent changes?

  • A. Identify the problem.
  • B. Establish a plan of action.
  • C. Test the theory to determine cause.
  • D. Document the findings and outcomes.

Answer: A

Explanation:
Checking logs for recent changes is part of the "Identify the problem" step in the CompTIA troubleshooting methodology. This step involves gathering information, including reviewing logs and documentation, to understand what might have changed or caused the issue. This preliminary analysis is critical for forming an accurate theory about the problem.


NEW QUESTION # 219
Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?

  • A. GRE tunnel
  • B. Dedicated line
  • C. Site-to-site VPN
  • D. VXLAN

Answer: C

Explanation:
A Site-to-site VPN (Virtual Private Network) is the most cost-effective solution for establishing a persistent, secure connection between two facilities. It uses the public internet to create an encrypted tunnel, leveraging existing internet connections without requiring expensive dedicated infrastructure. This makes it ideal for organizations looking to securely connect remote sites while minimizing costs.
Why not GRE tunnel? Generic Routing Encapsulation (GRE) tunnels encapsulate traffic but do not provide encryption natively, requiring additional protocols (e.g., IPsec) for security. This adds complexity and is less cost-effective than a site-to-site VPN, which integrates encryption.
Why not VXLAN? Virtual Extensible LAN (VXLAN) is used for overlay networks in data centers to extend Layer 2 networks, not for secure site-to-site connectivity.
Why not Dedicated line? A dedicated line (e.g., leased line or MPLS) provides high reliability but is significantly more expensive due to the need for dedicated infrastructure.
Reference:CompTIA Network+ N10-009 Objective 1.7: Explain the use cases for virtual private networks (VPNs) and tunneling protocols. The CompTIA Network+ Study Guide (e.g., Chapter 12: Network Security) explains that site-to-site VPNs are a cost-effective, secure method for connecting geographically separate networks over the internet.


NEW QUESTION # 220
Network administrators are using the Telnet protocol to administer network devices that are on the
192.168.1.0/24 subnet. Which of the following tools should the administrator use to best identify the devices?

  • A. tracert
  • B. dig
  • C. nmap
  • D. telnet

Answer: C

Explanation:
nmap(Network Mapper) is the best tool in this scenario. It can scan the 192.168.1.0/24 subnet to discoverlive hosts, open ports (like Telnet on port 23), and device types. It's ideal for mapping and auditing the network.
* A. digis a DNS lookup tool; not useful for identifying hosts on a subnet.
* C. tracertshows the path packets take to a destination, not for host discovery.
* D. telnetis the protocol being used, not a tool for scanning or identifying devices.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 5.1 - Given a scenario, use the appropriate network troubleshooting tools.


NEW QUESTION # 221
A network technician is troubleshooting a web application's poor performance. The office has two internet links that share the traffic load. Which of the following tools should the technician use to determine which link is being used for the web application?

  • A. netstat
  • B. ping
  • C. nslookup
  • D. tracert

Answer: D

Explanation:
* Understanding Tracert:
* Traceroute Tool: tracert (Windows) or traceroute (Linux) is a network diagnostic tool used to trace the path that packets take from a source to a destination. It lists all the intermediate routers the packets traverse.
* Determining Traffic Path:
* Path Identification: By running tracert to the web application's destination IP address, the technician can identify which route the traffic is taking and thereby determine which internet link is being used.
* Load Balancing Insight: If the office uses load balancing for its internet links, tracert can help verify which link is currently handling the traffic for the web application.
* Comparison with Other Tools:
* netstat: Displays network connections, routing tables, interface statistics, and more, but does not trace the path of packets.
* nslookup: Used for querying DNS to obtain domain name or IP address mapping, not for tracing packet routes.
* ping: Tests connectivity and measures round-trip time but does not provide path information.
* Implementation:
* Open a command prompt or terminal.
* Execute tracert [destination IP] to trace the route.
* Analyze the output to determine the path and the link being used.


NEW QUESTION # 222
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