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CompTIA N10-009 Exam Syllabus Topics:

Topic
Details

Topic 1

OSI reference model concepts, Comparison of networking appliances, applications, and functions

Topic 2

Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and

Topic 3

Selection and configuration of wireless devices.

Topic 4

Networking Concepts: For network administrators and IT support professionals, this domain covers

Topic 5

Network Security: This section of the exam for cybersecurity specialists and network security administrators covers the importance of basic network security concepts, Various types of attacks and their impact on the network, application of network security features, defense techniques, and solutions.| Network Troubleshooting: For help desk technicians and network support specialists, this section covers troubleshooting methodology, troubleshooting common cabling and physical interface issues, troubleshooting common issues with network services, and use of appropriate tools or protocols to solve networking issues.

Topic 6

Network Operations: For IT operations staff and network operations center (NOC) technicians, this part of the exam covers the purpose of organizational processes and procedures and use of network monitoring technologies.

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CompTIA Network+ Certification Exam Sample Questions (Q21-Q26):

NEW QUESTION # 21
Which of the following routing protocols is most commonly used to interconnect WANs?

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

Answer: B

Explanation:
Border Gateway Protocol (BGP): BGP is the most commonly used routing protocol for interconnecting WANs, especially across the internet. It is used for exchanging routing information between autonomous systems (AS), making it the backbone protocol for large-scale WANs.
IGP (A): Interior Gateway Protocols like OSPF and EIGRP are typically used within a single AS, not between them.
EIGRP (B): While it is efficient, EIGRP is primarily used for intra-domain routing and not ideal for WAN interconnection.
OSPF (D): While OSPF can be used for WANs, it is not as common as BGP for inter-AS communication.

NEW QUESTION # 22
A network administrator is deploying a new switch and wants to make sure that the default priority value was set for a spanning tree. Which of the following values would the network administrator expect to see?

A. 0
B. 1
C. 2
D. 3

Answer: C

Explanation:
* Understanding Spanning Tree Protocol (STP):
* STP is used to prevent network loops in Ethernet networks by creating a spanning tree that selectively blocks some redundant paths.
* Default Priority Value:
* Bridge Priority: STP uses bridge priority to determine which switch becomes the root bridge.
The default bridge priority value for most switches is 32768.
* Priority Range: The bridge priority can be set in increments of 4096, ranging from 0 to 61440.
* Configuration and Verification:
* When deploying a new switch, the network administrator can verify the bridge priority using commands such as show spanning-tree to ensure it is set to the default value of 32768.
* Comparison with Other Values:
* 4096 and 8192: Lower than the default priority, indicating these would be manually configured for higher preference.
* 36684: A non-standard value, likely a result of specific configuration changes.
References:
* CompTIA Network+ study materials on Spanning Tree Protocol and network configuration.

NEW QUESTION # 23
A network administrator is notified that a user cannot access resources on the network. The network administrator checks the physical connections to the workstation labeled User 3 and sees the Ethernet is properly connected. However, the network interface's indicator lights are not blinking on either the computer or the switch. Which of the following Is the most likely cause?

A. The default gateway is wrong.
B. The switch failed.
C. The port Is shut down.
D. The VLAN assignment is incorrect.

Answer: C

Explanation:
When a network interface's indicator lights are not blinking on either the computer or the switch, it suggests a physical layer issue. Here is the detailed reasoning:
Ethernet Properly Connected: The Ethernet cable is correctly connected, eliminating issues related to a loose or faulty cable.
No Indicator Lights: The absence of blinking indicator lights on both the computer and the switch typically points to the port being administratively shut down.
Switch Port Shut Down: In networking, a switch port can be administratively shut down, disabling it from passing any traffic. This state is configured by network administrators and can be verified and changed using the command-line interface (CLI) of the switch.
Command to Check and Enable Port:
bash
Copy code
Switch> enable
Switch# configure terminal
Switch(config)# interface [interface id]
Switch(config-if)# no shutdown
The command no shutdown re-enables the interface if it was previously disabled. This will restore the link and the indicator lights should start blinking, showing activity.

NEW QUESTION # 24
A network consultant needs to decide between running an ethernet uplink or using the built-in 5GHz-to-point functionality on a WAP. Which of the following documents provides the best information to assist the consultant with this decision?

A. Physical diagram
B. Logical diagram
C. Service-level agreement
D. Site survey results

Answer: D

NEW QUESTION # 25
A network administrator needs to assign IP addresses to a newly installed network. They choose
192.168.1.0/24 as their network address and need to create three subnets with 30 hosts on each subnet. Which of the following is a valid subnet mask that will meet the requirements?

A. 255.255.255.192
B. 255.255.255.224
C. 255.255.255.240
D. 255.255.255.128

Answer: A

Explanation:
To create three subnets with at least 30 hosts each:
Subnet Calculation: Each subnet must support 32 addresses (30 usable + 2 reserved for network and broadcast).
Bits for Subnets: Subnet mask 255.255.255.192 (/26) provides 64 addresses per subnet (4 subnets total).
Valid Subnets: Each subnet provides sufficient IPs to meet the requirement.

NEW QUESTION # 26
......

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