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CompTIA N10-008 certification exam is a valuable certification for IT professionals who want to demonstrate their skills and knowledge in the field of networking. CompTIA Network+ Certification Exam certification is recognized globally and is a requirement for many IT jobs. N10-008 exam is comprehensive and covers all aspects of networking, including network design, configuration, and troubleshooting. CompTIA Network+ Certification Exam certification is vendor-neutral, making it a valuable certification for IT professionals who work with multiple vendors and technologies.
NEW QUESTION # 129
Which of the following OSI model layers would allow a user to access and download files from a remote computer?
- A. Session
- B. Network
- C. Application
- D. Presentation
Answer: C
Explanation:
The application layer of the OSI model (Open Systems Interconnection) is responsible for providing services to applications that allow users to access and download files from a remote computer. These services include file transfer, email, and web access, as well as other related services. In order for a user to access and download files from a remote computer, the application layer must provide the necessary services that allow the user to interact with the remote computer.
NEW QUESTION # 130
A network administrator installed a new data and VoIP network. Users are now experiencing poor call quality when making calls. Which of the following should the administrator do to increase VoIP performance?
- A. Configure LACP on all VoIP phones.
- B. Configure a voice VLAN.
- C. Configure PoE on the network.
- D. Configure jumbo frames on the network.
Answer: B
Explanation:
"Benefits of Voice VLAN
It ensures that your VoIP (Voice over Internet Phone) devices do not have to contend directly with all the broadcasts and other traffic from the data VLAN. A voice VLAN can simplify network configuration in some circumstances."
https://community.fs.com/blog/auto-voip-vs-voice-vlan-what-s-the-difference.html Jumbo Frames
"When jumbo frames on a VoIP/UC network are enabled, it can cause the same kind of delay to your network transmissions."
"VoIP uses will always not benefit from jumbo frame, as VoIP like gaming, is latency and time sensitive. Jumbo Frame for Internet Purpose: You will not see any performance boost as the files that came across the internet does not support jumbo frame."
https://www.ankmax.com/newsinfo/1358641.html#:~:text=VoIP%20uses%20will%20always%20not,does%20not%20support%20jumbo%20frame.
"To summarize this general best practice guide, you should NOT enable jumbo frame feature as a general home user."
NEW QUESTION # 131
A network administrator is troubleshooting the communication between two Layer 2 switches that are reporting a very high runt count. After trying multiple ports on both switches, the issue persists. Which of the following should the network administrator perform to resolve the issue?
- A. Perform a factory reset on both switches.
- B. Recertify the cable between both switches.
- C. Enable debug logging on both switches.
- D. Increase the MTU size on both switches.
Answer: D
NEW QUESTION # 132
An administrator wants to host services on the internet using an internal server. The server is configured with an RFC1918 address, and the administrator wants to make the services that are hosted on the server available on one of the company's public IP addresses. Which of the following should the administrator configure to allow this access?
- A. Dual stack
- B. Virtual IP
- C. IPv6 tunneling
- D. EUI-64
Answer: B
Explanation:
A virtual IP (VIP) is an IP address that is shared by multiple servers or devices on a network. A VIP can be used to provide load balancing, failover, or high availability for services that are hosted on the network. A VIP can also be used to map an internal server's private IP address to a public IP address, allowing the server to host services on the internet. This is also known as network address translation (NAT) or port forwarding.
The other options are not correct because they are not related to mapping an internal server's IP address to a public IP address. They are:
* IPv6 tunneling is a technique that allows IPv6 packets to be encapsulated and transmitted over an IPv4 network.
* Dual stack is a configuration that allows a device to support both IPv4 and IPv6 protocols simultaneously.
* EUI-64 is a method of generating a 64-bit interface identifier for an IPv6 address based on the 48-bit MAC address of the device.
Reference
1: What is a Virtual IP Address (VIP)? - Definition from Techopedia
2: IPv6 Tunneling - an overview | ScienceDirect Topics
3: Dual Stack Definition
4: [EUI-64 - an overview | ScienceDirect Topics]
NEW QUESTION # 133
Which of the following would be used to forward requests and replies between a DHCP server and client?
- A. Range
- B. Scope
- C. Relay
- D. Lease
Answer: D
NEW QUESTION # 134
A technician is troubleshooting reports that a networked printer is unavailable. The printer's IP address is configured with a DHCP reservation, but the address cannot be pinged from the print server in the same subnet. Which of the following is MOST likely the cause of me connectivity failure?
- A. DHCP scope exhaustion
- B. Incorrect gateway
- C. DNS failure
- D. Incorrect VLAN
Answer: D
Explanation:
* A VLAN is a virtual local area network that logically separates devices on the same physical network.
VLANs can improve network performance, security, and management by reducing broadcast domains and isolating traffic.
* A DHCP reservation is a feature that allows a network administrator to assign a specific IP address to a device based on its MAC address. This ensures that the device always receives the same IP address from the DHCP server, even if the lease expires or the device reboots.
* A networked printer is a device that can be shared by multiple users on the same network. A networked printer typically has a built-in network interface card (NIC) that allows it to communicate with other devices using TCP/IP protocols.
* A print server is a device or a software application that manages the printing requests from multiple clients. A print server can also provide additional features such as print queue management, printer driver installation, and printer status monitoring.
* A subnet is a logical division of an IP network that allows devices to communicate more efficiently and securely. A subnet is defined by a network address and a subnet mask, which determine the range of valid IP addresses within the subnet. Devices on the same subnet can communicate directly with each other without the need for a router.
* A ping is a network diagnostic tool that tests the connectivity and reachability between two devices by sending and receiving echo packets. A ping request can fail for various reasons, such as network congestion, firewall settings, routing issues, or device configuration errors.
* Based on the question, the networked printer is unavailable because it cannot be pinged from the print server in the same subnet. This means that there is a problem with the layer 2 connectivity between the two devices, which is determined by the MAC addresses and the VLANs. The most likely cause of this problem is that the printer and the print server are on different VLANs, which prevents them from communicating with each other. The other options are less likely because they affect the layer 3 connectivity, which is determined by the IP addresses and the gateways. A DNS failure would not affect the ping request, since it uses IP addresses and not hostnames. A DHCP scope exhaustion would not affect the printer, since it has a DHCP reservation that guarantees its IP address. An incorrect gateway would not affect the communication within the same subnet, since it is only used for routing packets to other networks. References:
* CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section
2.2: Network Device Functions and Features, Subsection: Print Servers, pp. 76-77.
* CompTIA Network+ N10-008 Study Guide, Chapter 3: Network Operations, Section 3.3: Network Configuration Management, Subsection: DHCP, pp. 144-146.
* CompTIA Network+ N10-008 Study Guide, Chapter 4: Network Security, Section 4.2: Network Segmentation and Isolation, Subsection: VLANs, pp. 202-204.
* Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 1.5: Network Troubleshooting Methodology, Subsection: Identify the Problem, pp. 16-17.
* Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.2: Network Devices, Subsection: Print Servers, p. 28.
* Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.6: Network Addressing, Subsection: DHCP, p. 38.
* Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 2.7: Network Addressing, Subsection: Subnetting, p. 39.
* Professor Messer's CompTIA N10-008 Network+ Course Notes, Section 3.5: Network Segmentation, Subsection: VLANs, p. 58.
NEW QUESTION # 135
In a data center, data traffic that moves east-west is flowing between:
- A. top-of-rack switches.
- B. the top-of-rack and core switches.
- C. the server and the cloud.
- D. the top-of-rack and distribution switches.
Answer: A
Explanation:
East-west data traffic in a data center refers to the traffic that flows laterally within the data center, typically between servers within the same data center. This type of traffic usually flows between top-of-rack (ToR) switches, which connect multiple servers or devices in the same rack to each other or to other racks without necessarily routing through the core or distribution layers of the network architecture. This is opposed to north-south traffic, which typically flows in and out of the data center to the wider network or internet. Therefore, the correct answer is "top-of-rack switches".
NEW QUESTION # 136
A network administrator is getting reports of some internal users who cannot connect to network resources. The users slate they were able to connect last week, but not today. No changes have been configured on the network devices or server during the last few weeks. Which of the following is the MOST likely cause of the issue?
- A. The captive portal is down and needs to be restarted
- B. The client DHCP scope is fully utilized
- C. The wired network is experiencing electrical interference
- D. SNMP traps are being received
- E. The packet counter on the router interface is high.
Answer: B
NEW QUESTION # 137
A company is utilizing multifactor authentication for data center access. Which of the following is the MOST effective security mechanism against physical intrusions due to stolen credentials?
- A. Access card readers
- B. Access control vestibule
- C. Biometrics security hardware
- D. Motion detection cameras
Answer: B
NEW QUESTION # 138
A technician needs to configure a Linux computer for network monitoring. The technician has the following information:
Linux computer details:
Switch mirror port details:
After connecting the Linux computer to the mirror port on the switch, which of the following commands should the technician run on the Linux computer?
- A. ifconfig eth0 10.1.2.3
- B. ifconfig eth1 hw ether A1:B2:C3:D4:E5:F6
- C. ifconfig ecth0 promisc
- D. ifconfig eth1 up
Answer: C
Explanation:
Explanation
The ifconfig eth0 promisc command should be run on the Linux computer to enable promiscuous mode, which allows the computer to capture all network traffic passing through the switch mirror port. References:
CompTIA Network+ Certification Study Guide, Chapter 7: Network Devices.
NEW QUESTION # 139
A technician wants to deploy a new wireless network that comprises 30 WAPs installed throughout a three-story office building. All the APs will broadcast the same SSID for client access. Which of the following BEST describes this deployment?
- A. Unified service set
- B. Independent basic service set
- C. Extended service set
- D. Basic service set
Answer: C
Explanation:
An extended service set (ESS) is a wireless network that consists of multiple access points (APs) that share the same SSID and are connected by a wired network. An ESS allows wireless clients to roam seamlessly between different APs without losing connectivity. A basic service set (BSS) is a wireless network that consists of a single AP and its associated clients. An independent basic service set (IBSS) is a wireless network that consists of a group of clients that communicate directly without an AP. A unified service set is not a standard term for a wireless network. Reference: https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam-objectives-(2-0), https://en.wikipedia.org/wiki/Service_set_(802.11_network)
NEW QUESTION # 140
A network administrator wants to reduce overhead and increase efficiency on a SAN. Which of the following can be configured to achieve these goals?
- A. Flow control
- B. Jumbo frames
- C. Port aggregation
- D. Traffic shaping
Answer: B
NEW QUESTION # 141
Given the following Information:
Which of the following would cause performance degradation between PC A and PC B'?
- A. Interference
- B. Decibel loss
- C. Attenuation
- D. Incorrect pinout
Answer: D
NEW QUESTION # 142
Which of the following is used to track and document various types of known vulnerabilities?
- A. SIEM
- B. Zero-day
- C. Least privilege
- D. CVE
- E. Penetration testing
Answer: D
Explanation:
CVE stands for Common Vulnerabilities and Exposures, which is a list of publicly disclosed cybersecurity vulnerabilities that is free to search, use, and incorporate into products and services. CVE provides a standardized identifier and description for each vulnerability, as well as references to related sources of information. CVE helps to track and document various types of known vulnerabilities and facilitates communication and coordination among security professionals.
References:
https://partners.comptia.org/docs/default-source/resources/comptia-network-n10-008-exam-objectives-(2-0),
https://cve.mitre.org/cve/
NEW QUESTION # 143
A company that uses VoIP telephones is experiencing intermittent issues with one-way audio and dropped conversations The manufacturer says the system will work if ping times are less than 50ms. The company has recorded the following ping times:
Which of the following is MOST likely causing the issue?
- A. Latency
- B. Jitter
- C. Attenuation
- D. VLAN mismatch
Answer: B
Explanation:
Explanation
Jitter is most likely causing the issue of intermittent one-way audio and dropped conversations for the company that uses VoIP telephones. Jitter is a variation in delay of packets arriving at the destination. It can cause choppy or distorted audio quality for VoIP applications, especially over WAN links that have limited bandwidth and high latency. The recommended jitter for VoIP is less than 10ms1. The company has recorded ping times that exceed 50ms, which indicates high jitter and latency on their network. References:
https://www.voip-info.org/voip-jitter/ 1
NEW QUESTION # 144
A technician is working on a ticket for a user in the human resources department who received a new PC that does not connect to the internet. All users in human resources can access the internet. The technician can ping the PC from the human resources router but not from the IT network. Which of the following is the most likely cause of the issue?
- A. Duplicate IP address
- B. Incorrect default gateway
- C. Misconfigured RIP
- D. Improper VLAN assignment
Answer: B
Explanation:
Explanation
An incorrect default gateway can cause a PC to not connect to the internet, because the default gateway is the device that routes traffic from the local network to other networks. If the PC has a wrong default gateway configured, it may not be able to reach the internet router or the IT network router. The technician can ping the PC from the human resources router because they are on the same local network, but not from the IT network router because they are on different networks.
A duplicate IP address can cause a PC to not communicate with other devices on the same network, because the IP address is the unique identifier of a device on a network. If two devices have the same IP address, they may cause IP conflicts and packet loss. However, a duplicate IP address would not prevent the technician from pinging the PC from the human resources router, because they are on the same network.
A misconfigured RIP can cause a router to not learn or advertise routes to other networks, because RIP is a routing protocol that dynamically exchanges routing information between routers. If a router has a wrong RIP configuration, it may not be able to reach or share routes with other routers. However, a misconfigured RIP would not affect the PC's connectivity to the internet, because the PC does not use RIP.
An improper VLAN assignment can cause a PC to not communicate with other devices on the same or different networks, because a VLAN is a logical segmentation of a network that isolates traffic based on criteria such as function, security, or performance. If a PC is assigned to a wrong VLAN, it may not be able to access the resources or services that it needs. However, an improper VLAN assignment would not prevent the technician from pinging the PC from the human resources router, because they are on the same physical network.
References
What is a Default Gateway?
What's an IP Conflict and How Do You Resolve It?
What is RIP (Routing Information Protocol)?
What is a VLAN? How to Set Up a VLAN Network
CompTIA Network+ Certification All-in-One Exam Guide, Eighth Edition (Exam N10-008)
NEW QUESTION # 145
Which of the following provides guidance to an employee about restricting non-business access to the company's videoconferencing solution?
- A. Standard operating procedure
- B. Acceptable use policy
- C. Data loss prevention
- D. Remote access policy
Answer: B
Explanation:
An acceptable use policy (AUP) is a set of rules that outline the proper and improper use of an organization's resources, such as its videoconferencing solution. An AUP can provide guidance to employees about what is expected of them when using the organization's videoconferencing solution, including restricting non-business access to it.
NEW QUESTION # 146
Which of the following DNS records works as an alias to another record?
- A. MX
- B. SOA
- C. AAAA
- D. CNAME
Answer: D
Explanation:
AAAA record is used to find the IP address of a computer connected to the internet from a name.
CNAME record is a type of DNS record that maps an alias name to a true or canonical domain name.
MX record specifies the mail server responsible for accepting email messages on behalf of a domain name.
SOA record is a type of resource record in the DNS containing administrative information about the zone.
NEW QUESTION # 147
A user reports being unable to access network resources after making some changes in the office. Which of the following should a network technician do FIRST?
- A. Ask what changes were made
- B. Check the system's IP address
- C. Do a ping test against the servers
- D. Reseat the cables into the back of the PC
Answer: A
Explanation:
When a user reports being unable to access network resources after making some changes, the network technician should first ask the user what changes were made. This information can help the technician identify the cause of the issue and determine the appropriate course of action.
References: CompTIA Network+ Certification Study Guide, Sixth Edition by Glen E. Clarke
NEW QUESTION # 148
Which of the following is an example of on-demand scalable hardware that is typically housed in the vendor's data center?
- A. SaaS
- B. DaaS
- C. PaaS
- D. laaS
Answer: D
Explanation:
Explanation
IaaS is an example of on-demand scalable hardware that is typically housed in the vendor's data center. IaaS stands for Infrastructure as a Service, which is a cloud computing model that provides virtualized computing resources over the internet. IaaS allows customers to rent servers, storage, network devices, and other hardware components from a cloud service provider, rather than purchasing and maintaining them on-premise.
IaaS offers advantages such as scalability, flexibility, cost-effectiveness, and reliability. Customers can adjust their hardware resources according to their needs and pay only for what they use. Customers can also access their hardware resources from anywhere via a web browser or an API. References: [CompTIA Network+ Certification Exam Objectives], What Is Infrastructure as a Service (IaaS)? | IBM
NEW QUESTION # 149
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