N10-009 Exam Dumps - CompTIA Network+ Certification Exam

The customer can accesslocal resources(a database server), which meanslocal networking is working. However, the inability to reach the internet suggests an issue with thedefault gateway. If thedefault gateway is unreachable, packets will not be routed outside the local network.

Breakdown of Options:

A. Incorrect DNS–DNS issueswould cause problemsresolving domain names, but the user should still be able to access external resources via IP addresses.

B. Unreachable gateway–✅Correct answer.If thedefault gateway is incorrect or unreachable, the devicecannot route traffic to the internet.

C. Failed root bridge–STP (Spanning Tree Protocol) failurescauseswitching issues, but the user can still access local devices, meaning STP is not the problem.

D. Poor upstream routing– Wouldaffect the entire network, not just one user.

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.

Basic Configuration Commands PDF, sections on interface configuration (e.g., shutdown, no shutdown)​​.

Comprehensive and Detailed Explanation:

BYOD (Bring Your Own Device)policies define rules forusing personal deviceson the company network. Since the new employee is using apersonal laptop, this policy applies.

Breakdown of Options:

A. IAM (Identity and Access Management)– Governsuser permissions,not device policies.

B. BYOD (Bring Your Own Device)–✅Correct answer.Coversusing personal devicesfor work.

C. DLP (Data Loss Prevention)– Focuses onpreventing sensitive data leaks,not device usage policies.

D. AUP (Acceptable Use Policy)– Coversinternet and system usage, butnot personal device rules.

To support at least260 hosts, you need at least512 total IP addresses (accounting for network/broadcast overhead).

/23 (255.255.254.0)gives510 usable IPs, ideal for 260 devices with minimal waste.

/24 (255.255.255.0)gives only 254 usable — not enough.

/22 (1022 usable)and/21 (2046 usable)would work but result insignificant address waste.

📘Reference:

CompTIA Network+ N10-009 Official Objectives: 2.1 – Given a scenario, configure and apply IP addressing schemes.

Comprehensive and Detailed Explanation:

Border Gateway Protocol (BGP)is theprimary protocolused toroute traffic on the public internet. It allows ISPs and large networks toexchange routing information, making it anExterior Gateway Protocol (EGP).

Breakdown of Options:

A. BGP–Correct answer.Used forinternet routingand exchangesrouting information between ISPs.

B. OSPF– AnInterior Gateway Protocol (IGP)used for routingwithinan autonomous system (not the public internet).

C. EIGRP– Cisco’s proprietaryIGP, usedwithinprivate networks, not the public internet.

D. RIP– An olderdistance-vector protocol,not scalablefor the internet.

The loopback address (127.0.0.1) is used to test a host’s local TCP/IP stack, ensuring that the networking components of the operating system are functioning properly.

This test does not require network connectivity because it only checks if the local machine's TCP/IP stack is operational.

If the loopback test fails, it indicates a misconfigured TCP/IP stack, corrupt drivers, or an issue with the OS networking components.

Option B (ping 169.254.1.1) – This is an APIPA (Automatic Private IP Addressing) address, which is assigned when DHCP fails. It does not test the local TCP/IP stack.

Option C (ping 172.16.1.1) and Option D (ping 192.168.1.1) – These are private network addresses and test connectivity to other devices, not the local TCP/IP stack.

? Reference: CompTIA Network+ (N10-009) Official Study Guide – Section: Troubleshooting Network Connectivity

Content filtering can be used to block or restrict access to websites and services that facilitate torrenting and other prohibited activities. By implementing content filtering, the company can comply with the ISP's cease-and-desist order and prevent users from accessing torrent sites and engaging in prohibited activities.References: CompTIA Network+ study materials.

The loopback address 127.0.0.1 is used to test the TCP/IP stack of the local machine. Pinging this address confirms whether the local system's networking stack is functioning correctly.

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