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N10-009 Detailed Answers | Exam N10-009 Tutorials

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CompTIA Network+ Certification Exam Sample Questions (Q278-Q283):

NEW QUESTION # 278
An organization wants better network visibility. The organization's requirements include:
Multivendor/OS-monitoring capabilities
Real-time collection
Data correlation
Which of the following meets these requirements?

A. SNMP
B. Syslog
C. Nmap
D. SIEM

Answer: D

Explanation:
A Security Information and Event Management (SIEM) system collects, correlates, and analyzes logs from multiple sources in real-time, providing enhanced visibility across multivendor environments.
Breakdown of Options:
A: SNMP - SNMP is used for network device monitoring, but it lacks real-time correlation across multiple vendors.
B: SIEM - Correct answer. SIEM aggregates, analyzes, and correlates logs from multiple sources, providing real-time visibility.
C: Nmap - Nmap is a network scanning tool used for mapping hosts and detecting open ports but does not provide log correlation.
D: Syslog - Syslog collects logs but does not correlate or analyze them in real-time.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.3: Explain network security concepts.
NIST Special Publication 800-92: Guide to Computer Security Log Management

NEW QUESTION # 279
While troubleshooting a VoIP handset connection, a technician's laptop is able to successfully connect to network resources using the same port. The technician needs to identify the port on the switch. Which of the following should the technician use to determine the switch and port?

A. VLAN
B. LLDP
C. netstat
D. IKE

Answer: B

Explanation:
Link Layer Discovery Protocol (LLDP) is a network protocol used for discovering devices and their capabilities on a local area network, primarily at the data link layer (Layer 2). It helps in identifying the connected switch and the specific port to which a device is connected. When troubleshooting a VoIP handset connection, the technician can use LLDP to determine the exact switch and port where the handset is connected. This protocol is widely used in network management to facilitate the discovery of network topology and simplify troubleshooting.
Other options such as IKE (Internet Key Exchange), VLAN (Virtual LAN), and netstat (network statistics) are not suitable for identifying the switch and port information. IKE is used in setting up secure IPsec connections, VLAN is used for segmenting networks, and netstat provides information about active connections and listening ports on a host but not for discovering switch port details.

NEW QUESTION # 280
Which of the following offers the ability to manage access at the cloud VM instance?

A. Internet gateway
B. Security group
C. Network ACL
D. Direct Connect

Answer: B

Explanation:
Security groups in cloud environments act as virtual firewalls for VM instances, controlling inbound and outbound traffic based on specified rules.
From Andrew Ramdayal's guide:
"Network security groups are used to control inbound and outbound traffic to cloud resources within a VPC.
They act as a virtual firewall for associated instances..."

NEW QUESTION # 281
A secure communication link needs to beconfigured between data centers via the internet. The data centers are located in different regions. Which of the following is thebest protocolfor the network administrator to use?

A. VXLAN
B. DCI
C. GRE
D. IPSec

Answer: D

Explanation:
Comprehensive and Detailed Explanation:
IPSec (Internet Protocol Security)is the best choice forsecure communication over the internet, as it providesencryption, authentication, and data integrity. It is widely used inVPNs and site-to-site secure tunnels.
Breakdown of Options:
* A. DCI (Data Center Interconnect)- A general term forlinking data centers, but it doesn't specify a secure tunneling protocol.
* B. GRE (Generic Routing Encapsulation)- Encapsulates traffic butlacks encryption, making itless secure than IPSec.
* C. VXLAN (Virtual Extensible LAN)- Used forLayer 2 network overlays,not for securing communication over the internet.
* D. IPSec-#Correct answer.Providesencryption, authentication, and integrityfor data over the internet.

NEW QUESTION # 282
A user cannot access an external server for a client after connecting to a VPN. Which of the following commands would a support agent most likely use to examine the issue? (Select two).

A. route print
B. nslookup
C. tracert
D. tcpdump
E. arp
F. dig

Answer: A,C

Explanation:
When a user connects to a VPN and experiences connectivity issues to an external server, the problem is often related to routing or network path issues.
E:tracert:
Traces the path packets take from the user's device to the destination server.
Helps determine if the traffic is being blocked or misrouted.
F:route print:
Displays the device's routing table.
Helps diagnose whether traffic is being sent to the VPN tunnel instead of the correct external server.
Incorrect Options:
A:nslookup: Used for resolving domain names to IPs (DNS troubleshooting), but this issue is likely routing- related.
B:tcpdump: Captures packets for deep packet analysis, not typically the first step in diagnosing a VPN- related access issue.
C:arp: Used for resolving local network MAC addresses, not relevant for external VPN issues.
D:dig: Like nslookup, used for DNS queries, but not useful for routing problems.

NEW QUESTION # 283
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