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CompTIA N10-009 Exam Syllabus Topics:

Topic	Details
Topic 1	Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and
Topic 2	Networking Concepts: For network administrators and IT support professionals, this domain covers
Topic 3	OSI reference model concepts, Comparison of networking appliances, applications, and functions
Topic 4	Cloud concepts and connectivity options, and Common networking ports.

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CompTIA Network+ Certification Exam Sample Questions (Q319-Q324):

NEW QUESTION # 319
A research facility is expecting to see an exponential increase in global network traffic in the near future. The offices are equipped with 2.5Gbps fiber connections from the ISP, but the facility is currently only utilizing
1Gbps connections. Which of the following would need to be configured in order to use the ISP's connection speed?

A. Link aggregation
B. Port duplex
C. 802.1Q tagging
D. Network address translation

Answer: A

Explanation:
* Understanding Link Aggregation:
* Definition: Link aggregation combines multiple network connections into a single logical link to increase bandwidth and provide redundancy.
* Usage in High-Bandwidth Scenarios:
* Combining Links: By aggregating multiple 1Gbps connections, the facility can utilize the full 2.5 Gbps bandwidth provided by the ISP.
* Benefits: Enhanced throughput, load balancing, and redundancy, ensuring better utilization of available bandwidth.
* Comparison with Other Options:
* 802.1Q Tagging: Used for VLAN tagging, which does not affect the physical bandwidth utilization.
* Network Address Translation (NAT): Used for IP address translation, not related to link speed or bandwidth aggregation.
* Port Duplex: Refers to the mode of communication (full or half duplex) on a port, not the aggregation of bandwidth.
* Implementation:
* Configure link aggregation (often referred to as LACP - Link Aggregation Control Protocol) on network devices to combine multiple physical links into one logical link.

NEW QUESTION # 320
Which of the following technologies are X.509 certificates most commonly associated with?

A. PKI
B. MFA
C. LDAP
D. VLAN tagging

Answer: A

Explanation:
X.509 certificates are most commonly associated with Public Key Infrastructure (PKI). These certificates are used for a variety of security functions, including digital signatures, encryption, and authentication.
* PKI: X.509 certificates are a fundamental component of PKI, used to manage encryption keys and authenticate users and devices.
* Digital Certificates: They are used to establish secure communications over networks, such as SSL/TLS for websites and secure email communication.
* Authentication and Encryption: X.509 certificates provide the means to securely exchange keys and verify identities in various applications, ensuring data integrity and confidentiality.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Covers PKI and the role of X.509 certificates in network security.
* Cisco Networking Academy: Provides training on PKI, certificates, and secure communications.
* Network+ Certification All-in-One Exam Guide: Explains PKI, X.509 certificates, and their applications in securing network communications.

NEW QUESTION # 321
Which of the following protocols has a default administrative distance value of 90?

A. RIP
B. BGP
C. EIGRP
D. OSPF

Answer: C

Explanation:
EIGRP (Enhanced Interior Gateway Routing Protocol) has a default administrative distance (AD) value of 90 for internal routes. The administrative distance is used to rate the trustworthiness of routing information received from different routing protocols. EIGRP, developed by Cisco, has an AD of 90, which is lower than that of RIP (120) and OSPF (110), making it more preferred if multiple protocols provide a route to the same destination.

NEW QUESTION # 322
A network administrator performed upgrades on a server and installed a new NIC to improve performance. Following the upgrades, usera are unable to reach the server. Which of the following is the most likely reason.

A. A port security violation occured.
B. TX/RX was transposed.
C. The PoE power budget was exceeded.
D. An incorrect cable type was installed.

Answer: D

Explanation:
When a network administrator installs a new Network Interface Card (NIC) and users are unable to reach the server, one of the common issues is the use of an incorrect cable type. Network cables must match the specifications required by the NIC and the network infrastructure (e.g., Cat5e, Cat6 for Ethernet).
NIC Compatibility: The new NIC might require a specific type of cable to function properly. Using a cable not rated for the NIC's required speeds or capabilities can result in connectivity issues.
Cable Standards: Different NICs and network devices might need different cabling standards (straight-through vs. crossover cables, or specific fiber optic types).
Connection Types: Ensuring that the cable connectors are appropriate for the NIC ports (e.g., RJ45 for Ethernet, LC connectors for fiber optics).

NEW QUESTION # 323
A network administrator wants to increase network security by preventing client devices from communicating directly with each other on the same subnet. Which of the following technologies should be implemented?

A. Private VLAN
B. Port security
C. ACL
D. Trunking

Answer: A

Explanation:
Private VLANs (PVLANs)are used tosegment devices on the same subnetand switch so they cannot communicate with each other, while still accessing a shared resource like a router or gateway. This is often used in shared hosting or DMZ environments.
* A. ACLs (Access Control Lists)control traffic between networks, not within the same VLAN.
* B. Trunkingcarries multiple VLANs between switches but does not isolate devices.
* C. Port securitylimits MAC addresses per port but doesn't isolate communication between ports.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 3.4 - Compare and contrast access control methods.

NEW QUESTION # 324
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