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NEW QUESTION # 30
A network administrator receives complaints of intermittent network connectivity issues. The administrator investigates and finds that the network design contains potential loop scenarios. Which of the following should the administrator do?
- A. Change switchport speed limits
- B. Configure port security
- C. Enforce 802.1Q tagging
- D. Enable spanning tree
Answer: D
Explanation:
Spanning Tree Protocol (STP) is designed to detect and prevent Layer 2 loops by blocking redundant paths. If loops are possible in the design, enabling STP ensures network stability.
B). Port security controls endpoint MAC addresses, not loops.
C). Speed limits address bandwidth, not loop prevention.
D). 802.1Q tagging allows VLAN separation but does not resolve loops.
References (CompTIA Network+ N10-009):
Domain: Network Operations - Loop prevention, spanning tree, switch design.
NEW QUESTION # 31
A small company has the following IP addressing strategy:
A user is unable to connect to the company fileshare server located at 192.168.10.1. The user's networking configuration is:
Which of the following will most likely correct the issue?
- A. Changing the subnet mask to 255.255.255.0
- B. Changing the DNS servers to internet IPs
- C. Changing the IPv4 address to 192.168.10.1
- D. Changing the physical address to 7A-01-7A-21-01-50
Answer: A
Explanation:
If the user cannot communicate with 192.168.10.1, they might be on a different subnet. Changing the subnet mask to 255.255.255.0 ensures the user and the file server are in the same subnet.
Breakdown of Options:
A: Changing the IPv4 address to 192.168.10.1 - This would conflict with the server's IP.
B: Changing the subnet mask to 255.255.255.0 - # Correct answer. Ensures both the user and the server are on the same subnet.
C: Changing the DNS servers - DNS does not affect local network connectivity.
D: Changing the physical address - The MAC address does not impact subnet communication.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 2.4: Explain subnetting and addressing concepts.
NEW QUESTION # 32
A network administrator's device is experiencing severe Wi-Fi interference within the corporate headquarters causing the device to constantly drop off the network. Which of the following is most likely the cause of the issue?
- A. Too much wireless reflection
- B. Too many wireless repeaters
- C. Too many client connections
- D. Too much wireless absorption
Answer: A
Explanation:
Reference: CompTIA Network+ Certification Exam Objectives - Wireless Networks section.
NEW QUESTION # 33
A company wants to implement a disaster recovery site or non-critical applicance, which can tolerance a short period of downltime. Which of the followig type of sites should the company impelement to achive this goal?
- A. Passive
- B. Cold
- C. Hot
- D. Warm
Answer: D
Explanation:
A warm site is a compromise between a hot site and a cold site, providing a balance between cost and recovery time. It is partially equipped with the necessary hardware, software, and infrastructure, allowing for a quicker recovery compared to a cold site but at a lower cost than a hot site.
* Recovery Time: Warm sites can be operational within hours to a day, making them suitable for non-critical applications that can tolerate short downtimes.
* Cost-Effectiveness: Warm sites are more economical than hot sites as they do not require all systems to be fully operational at all times.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Discusses disaster recovery strategies and the different types of recovery sites.
* Cisco Networking Academy: Provides training on disaster recovery planning and site selection.
* Network+ Certification All-in-One Exam Guide: Explains the characteristics of hot, warm, and cold sites and their use cases in disaster recovery planning.
Warm sites offer a practical solution for maintaining business continuity for non-critical applications, balancing the need for availability with cost considerations.
NEW QUESTION # 34
Which of the following routing protocols needs to have an autonomous system set in order to establish communication with neighbor devices?
- A. FHRP
- B. EIGRP
- C. RIP
- D. OSPF
Answer: B
Explanation:
EIGRP (Enhanced Interior Gateway Routing Protocol)is a Cisco proprietary advanced distance-vector routing protocol. While it operates within an Autonomous System (AS), itrequiresthe AS number to be configured for routers to recognize each other as EIGRP neighbors.
* OSPF (Open Shortest Path First)uses areas and routers must be in the same area to form adjacencies, but it doesn't require AS numbers in the same way.
* FHRP (First Hop Redundancy Protocol)is not a routing protocol but a group of protocols (e.g., HSRP, VRRP) to ensure high availability at the default gateway level.
* RIP (Routing Information Protocol)does not use autonomous system numbers.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 3.1 - Compare and contrast various routing technologies.
NEW QUESTION # 35
What is the correct subnet mask for a /21 network?
- A. 255.255.240.0
- B. 255.255.252.0
- C. 255.255.224.0
- D. 255.255.248.0
Answer: A
Explanation:
A /21 subnet mask means 21 bits are network bits:
* 8 + 8 + 5 = 21 # leaves 11 bits for hosts.
* Subnet mask in binary: 11111111.11111111.11111000.00000000
* Converted to decimal: 255.255.248.0
Therefore:
* A. /19 = 255.255.224.0
* B. /20 = 255.255.240.0
* # C. /21 = 255.255.248.0 # correct
* D. /22 = 255.255.252.0
Answer correction: The correct option is C. 255.255.248.0, not B.
References (CompTIA Network+ N10-009):
* Domain: Networking Concepts - Subnetting, CIDR notation, dotted decimal masks.
NEW QUESTION # 36
A secure communication link needs to be configured between data centers via the internet. The data centers are located in different regions. Which of the following is the best protocol for the network administrator to use?
- A. VXLAN
- B. IPSec
- C. GRE
- D. DCI
Answer: B
Explanation:
IPSec (Internet Protocol Security) is the best choice for secure communication over the internet, as it provides encryption, authentication, and data integrity. It is widely used in VPNs and site-to-site secure tunnels.
Breakdown of Options:
A: DCI (Data Center Interconnect) - A general term for linking data centers, but it doesn't specify a secure tunneling protocol.
B: GRE (Generic Routing Encapsulation) - Encapsulates traffic but lacks encryption, making it less secure than IPSec.
C: VXLAN (Virtual Extensible LAN) - Used for Layer 2 network overlays, not for securing communication over the internet.
D: IPSec - # Correct answer. Provides encryption, authentication, and integrity for data over the internet.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.5: Implement secure remote access methods.
RFC 4301: Security Architecture for the Internet Protocol
NEW QUESTION # 37
Which of the following best explains the role of confidentiality with regard to data at rest?
- A. Data can be accessed by anyone on the administrative network.
- B. Data can be accessed after privileged access Is granted.
- C. Data can be accessed remotely with proper training.
- D. Data can be accessed after verifying the hash.
Answer: B
Explanation:
Confidentiality with Data at Rest: Confidentiality is a core principle of data security, ensuring that data stored (at rest) is only accessible to authorized individuals. This protection is achieved through mechanisms such as encryption, access controls, and permissions.
Privileged Access: The statement "Data can be accessed after privileged access is granted" aligns with the confidentiality principle, as it restricts data access to users who have been granted specific permissions or roles. Only those with the appropriate credentials or permissions can access the data.
Incorrect Options:
A . "Data can be accessed by anyone on the administrative network." This violates the principle of confidentiality by allowing unrestricted access.
B . "Data can be accessed remotely with proper training." This focuses on remote access rather than restricting access based on privileges.
D . "Data can be accessed after verifying the hash." This option relates more to data integrity rather than confidentiality.
NEW QUESTION # 38
A network technician is adding a new switch to increase capacity on the network. The technician connects the two switches using a single cable. Several hosts are moved to the new switch, but none of the hosts can access the network or internet. Which of the following should the technician do to resolve the issue?
- A. Install STP cables between the switches
- B. Set up link aggregation on the uplink ports
- C. Increase the PoE budget for the switches
- D. Configure the connecting ports as trunk ports
Answer: D
Explanation:
The correct solution is to configure the connecting ports as trunk ports. When connecting switches, the uplink ports must be configured to carry traffic for multiple VLANs (trunking), not just a single access VLAN. Without trunking, VLAN tags may be dropped, and traffic from hosts will not reach the rest of the network or internet.
B . STP cables is a misnomer - STP refers to Spanning Tree Protocol or Shielded Twisted Pair cables, neither of which solves this logical configuration issue.
C . PoE budget is irrelevant because switches and hosts in this context don't require PoE.
D . Link aggregation (LACP, EtherChannel) is for increasing bandwidth/redundancy across multiple links, not required with a single cable.
By enabling trunking on the uplink ports, the switches can pass VLAN-tagged traffic, ensuring hosts connected to the new switch have access to the same resources as those on the existing switch.
NEW QUESTION # 39
Which of the following protocol ports should be used to securely transfer a file?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
Port 22 is used for SFTP (Secure File Transfer Protocol) and SCP (Secure Copy Protocol), which encrypt file transfers using SSH (Secure Shell). This ensures data is transmitted securely over the network.
*Why not the other options?
*Port 69 (B) - TFTP (Trivial File Transfer Protocol): Transfers files but is not secure (no encryption).
*Port 80 (C) - HTTP: Used for web traffic, not for file transfer.
*Port 3389 (D) - RDP (Remote Desktop Protocol): Used for remote desktop access, not file transfer.
Reference:
CompTIA Network+ (N10-009) Official Guide - Chapter 5: Network Protocols and Ports
NEW QUESTION # 40
Which of the following is the next step to take after successfully testing a root cause theory?
- A. Duplicate the problem in a lab.
- B. Implement the solution to the problem.
- C. Determine resolution steps.
- D. Present the theory for approval.
Answer: B
Explanation:
Troubleshooting Methodology:
Confirming the Root Cause: After testing and confirming the theory, the next logical step is to address the issue by implementing a solution.
Implementation of the Solution:
Resolve the Issue: Implement the identified solution to rectify the problem. This step involves making necessary changes to the network configuration, replacing faulty hardware, or applying software patches.
Documentation: Document the solution and the steps taken to resolve the issue to provide a reference for future troubleshooting.
Comparison with Other Steps:
Determine Resolution Steps: This is part of the implementation process where specific actions are outlined, but the actual next step after testing is to implement those steps.
Duplicate the Problem in a Lab: This step is typically done earlier in the troubleshooting process to understand the problem, not after confirming the root cause.
Present the Theory for Approval: In some scenarios, presenting the theory might be necessary for major changes, but generally, once the root cause is confirmed, the solution should be implemented.
Final Verification:
After implementing the solution, it is important to verify that the issue is resolved and that normal operations are restored. This may involve monitoring the network and testing to ensure no further issues arise.
Reference:
CompTIA Network+ study materials on troubleshooting methodologies and best practices.
NEW QUESTION # 41
A network technician is examining the configuration on an access port and notices more than one VLAN has been set. Which of the following best describes how the port is configured?
- A. With a native VLAN
- B. With too many VLANs
- C. With a voice VLAN
- D. With a default VLAN
Answer: C
Explanation:
Explanation: It is common for an access port to have both a voice VLAN and a data VLAN. A voice VLAN separates voice traffic from regular data traffic, ensuring better quality and security for voice communications.
NEW QUESTION # 42
You have been tasked with implementing an ACL on the router that will:
1. Permit the most commonly used secure remote access technologies from the management network to all other local network segments
2. Ensure the user subnet cannot use the most commonly used remote access technologies in the Linux and Windows Server segments.
3. Prohibit any traffic that has not been specifically allowed.
INSTRUCTIONS
Use the drop-downs to complete the ACL
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
See the answer and solution below.
Explanation:
NEW QUESTION # 43
A network administrator needs to set up a multicast network for audio and video broadcasting. Which of the following networks would be the most appropriate for this application?
- A. 172.16.0.0/24
- B. 224.0.0.0/24
- C. 240.0.0.0/24
- D. 192.168.0.0/24
Answer: B
NEW QUESTION # 44
A virtual machine has the following configuration:
- IPv4 address: 169.254.10.10
- Subnet mask: 255.255.0.0
The virtual machine can reach colocated systems but cannot reach external addresses on the Internet. Which of the following Is most likely the root cause?
- A. The DHCP server is offline.
- B. The DNS server is unreachable.
- C. The subnet mask is incorrect.
- D. The IP address is an RFC1918 private address.
Answer: A
Explanation:
Understanding the 169.254.x.x Address:
An IPv4 address in the range of 169.254.x.x is an Automatic Private IP Addressing (APIPA) address, assigned when a DHCP server is unavailable.
DHCP Server Offline:
APIPA Assignment: When a device cannot obtain an IP address from a DHCP server, it assigns itself an APIPA address to enable local network communication. This allows communication with other devices on the same local subnet but not with external networks.
Resolution: Ensure the DHCP server is operational. Check for connectivity issues between the virtual machine and the DHCP server, and verify the DHCP server settings.
NEW QUESTION # 45
Which of the following connectors allows a singular QSFP transceiver to have several physical connections?
- A. LC
- B. RJ45
- C. ST
- D. MPO
Answer: D
Explanation:
TheMPO (Multi-fiber Push On)connector is designed to handle multiple fiber strands in a single connector, and it is commonly used with high-density transceivers likeQSFP (Quad Small Form-factor Pluggable).
* QSFPcan support up to four channels (hence "quad"), andMPOconnectors can interface multiple fibers (e.g., 8, 12, 24), making them ideal for40Gbps or 100Gbpsdeployments.
* RJ45 (A) is used for Ethernet over copper.
* ST (B) and LC (C) are single-fiber connectors - they don't support the multi-fiber needs of QSFP setups.
#Therefore,MPOis the correct connector type for this use case.
NEW QUESTION # 46
An organization is struggling to get effective coverage using the wireless network. The organization wants to implement a solution that allows for continuous connectivity anywhere in the facility. Which of the following should the network administrator suggest to ensure the best coverage?
- A. Implementing additional ad hoc access points
- B. Providing more Ethernet drops for user connections
- C. Deploying a mesh network in the building
- D. Changing the current frequency of the Wi-Fi
Answer: C
Explanation:
The correct answer is deploying a mesh network. A mesh wireless network uses multiple interconnected access points that automatically route traffic through the best available path. This ensures seamless coverage throughout a facility, even when users move between APs. Mesh APs can extend coverage without requiring each AP to be directly wired, making them ideal for large or hard-to-wire environments.
A . Ad hoc access points are peer-to-peer connections and cannot provide enterprise-grade continuous coverage.
B . Ethernet drops provide wired connectivity but do not solve wireless coverage issues.
D . Changing the frequency (from 2.4 GHz to 5 GHz or vice versa) may reduce interference but will not guarantee building-wide seamless connectivity.
Mesh networks are particularly effective in environments with roaming devices (smartphones, tablets, handheld scanners) and ensure that there are no dead spots, thereby delivering continuous wireless access.
NEW QUESTION # 47
A network engineer is testing a website to ensure it is compatible with IPv6. After attempting to ping the website by its IPv6 address, the engineer determines that the DNS has not been set up properly. Which of the following should the network engineer complete to resolve this issue?
- A. Configure a secondary NS record.
- B. Enable a PTR record.
- C. Add a new AAAA record.
- D. Update the existing TXT record.
Answer: C
Explanation:
*AAAA records map domain names to IPv6 addresses, enabling proper resolution.
*PTR records (A) are for reverse DNS lookups.
*TXT records (B) store text-based information, not IP addresses.
*NS records (D) define authoritative name servers but don't directly affect IPv6 resolution.
#Reference: CompTIA Network+ N10-009 Official Documentation - DNS Configuration & IPv6.
NEW QUESTION # 48
A company's marketing team created a new application and would like to create a DNS record for newapplication.comptia.org that always resolves to the same address as www.comptia.org. Which of the following records should the administrator use?
- A. MX
- B. NS
- C. CNAME
- D. SOA
Answer: C
Explanation:
A CNAME (Canonical Name) record is used in DNS to alias one domain name to another. This means that newapplication.comptia.org can be made to resolve to the same IP address as www.comptia.org by creating a CNAME record pointing newapplication.comptia.org to www.comptia.org. SOA (Start of Authority) is used for DNS zone information, MX (Mail Exchange) is for mail server records, and NS (Name Server) is for specifying authoritative DNS servers.
Reference:
The DNS section of the CompTIA Network+ materials describes the use of CNAME records for creating domain aliases.
NEW QUESTION # 49
A technician is designing a cloud service solution that will accommodate the company's current size, compute capacity, and storage capacity. Which of the following cloud deployment models will fulfill these requirements?
- A. SaaS
- B. PaaS
- C. IaC
- D. IaaS
Answer: D
Explanation:
Infrastructure as a Service (IaaS) provides scalable compute power, storage, and networking resources on demand. It is the best choice for a company that needs to customize its cloud solution based on size, compute capacity, and storage needs.
IaaS Benefits:
Provides virtual machines, storage, and networking resources.
Scalable based on company needs.
Reduces the need for physical infrastructure.
Incorrect Options:
A:SaaS (Software as a Service): Delivers software applications (e.g., Google Docs, Microsoft 365) but does not provide compute/storage infrastructure.
B:PaaS (Platform as a Service): Provides a development environment for application deployment but not full infrastructure control.
D:IaC (Infrastructure as Code): A methodology for automating infrastructure, not a cloud deployment model.
NEW QUESTION # 50
A company is implementing a wireless solution in a high-density environment. Which of the following 802.11 standards is used when a company is concerned about device saturation and converage?
- A. 802.11ax
- B. 802.11ac
- C. 802.11g
- D. 802.11n
Answer: A
Explanation:
802.11ax, also known as Wi-Fi 6, is designed for high-density environments and improves device saturation and coverage compared to previous standards.
802.11ac: While it offers high throughput, it is not optimized for high-density environments as effectively as
802.11ax.
802.11ax (Wi-Fi 6): Introduces features like OFDMA, MU-MIMO, and BSS Coloring, which enhance performance in crowded environments, reduce latency, and increase the number of devices that can be connected simultaneously.
802.11g and 802.11n: Older standards that do not offer the same level of efficiency or support for high device density as 802.11ax.
Network References:
CompTIA Network+ N10-007 Official Certification Guide: Covers the 802.11 standards and their capabilities.
Cisco Networking Academy: Provides training on Wi-Fi technologies and best practices for high-density deployments.
Network+ Certification All-in-One Exam Guide: Discusses the various 802.11 standards and their applications in different environments.
NEW QUESTION # 51
A network administrator is configuring a new switch and wants to ensure that only assigned devices can connect to the switch. Which of the following should the administrator do?
- A. Enable port security.
- B. Implement a captive portal.
- C. Disable unnecessaryservices.
- D. Configure ACLs.
Answer: A
Explanation:
Reference: CompTIA Network+ Certification Exam Objectives - Network Security section.
NEW QUESTION # 52
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CompTIA N10-009 Exam Syllabus Topics:
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