CompTIA CompTIA Network+ N10-008 Questions & Answers

• Question 41:

  Which of the following allows for an devices within a network to share a highly reliable time source?

  A. NTP

  B. SNMP

  C. SIP

  D. DNS

  Correct Answer: A

  Network Time Protocol (NTP) is a protocol used to maintain a highly accurate and reliable clock time on all devices within a network. NTP works by synchronizing the time of all the devices within a network to a single, highly accurate time source. This allows for the time of all the devices to be kept in sync with each other, ensuring a consistent and reliable time source for all devices within the network.

• Question 42:

  An organization is interested in purchasing a backup solution that supports the organization's goals. Which of the following concepts would specify the maximum duration that a given service can be down before impacting operations?

  A. MTTR

  B. RTO

  C. MTBF

  D. RPO

  Correct Answer: B

  The maximum duration that a given service can be down before it impacts operations is often referred to as the Recovery Time Objective (RTO). RTO is a key consideration in any backup and disaster recovery plan, as it determines how quickly the organization needs to be able to recover from a disruption or failure. It is typically expressed in terms of time, and it helps to inform the design and implementation of the backup solution. For example, if an organization has a critical service that must be available 24/7, it may have a very low RTO, requiring that the service be restored within a matter of minutes or even seconds. On the other hand, if the service can be down for a longer period of time without significantly impacting operations, the organization may have a higher RTO. When selecting a backup solution, it is important to consider the organization's RTO requirements and ensure that the solution is capable of meeting those needs. A solution that does not meet the organization's RTO requirements may not be sufficient to ensure the availability of critical services in the event of a disruption or failure.

• Question 43:

  Which of the following devices would be used to extend the range of a wireless network?

  A. A repeater

  B. A media converter

  C. A router

  D. A switch

  Correct Answer: A

  A repeater is a device used to extend the range of a wireless network by receiving, amplifying, and retransmitting wireless signals. It is typically used to extend the range of a wireless network in a large area, such as an office building or a campus. Repeaters can also be used to connect multiple wireless networks together, allowing users to move seamlessly between networks. As stated in the CompTIA Network+ Study Manual, "a wireless repeater is used to extend the range of a wireless network by repeating the signal from one access point to another."

• Question 44:

  After HVAC failures caused network outages, the support team decides to monitor the temperatures of all the devices. The network administrator cannot find a command that will display this information. Which of the following will retrieve the necessary information?

  A. SNMP OID values

  B. NetFlow data export

  C. Network baseline configurations

  D. Security information and event management

  Correct Answer: A

  The network administrator can use the Simple Network Management Protocol (SNMP) to monitor the temperatures of all the devices. SNMP is a widely-used protocol for managing and monitoring network devices, such as routers, switches, servers, and other networking equipment. SNMP allows network administrators to gather information about the performance and status of devices on the network, including temperature readings. To retrieve the temperature information, the administrator will have to configure SNMP on the devices and configure SNMP manager software on their computer. Once the SNMP manager software is configured, it will be able to send SNMP requests to the devices and retrieve information such as temperature, voltage, fan speeds, etc. Many network devices have built-in SNMP support, and the administrator may also need to install SNMP agent software on the devices to enable SNMP monitoring. The administrator can also use some specific command or tool like IPMI (Intelligent Platform Management Interface) or DCIM (Data Center Infrastructure Management) tools for monitoring the temperatures of all the devices.

• Question 45:

  A technician notices that equipment is being moved around and misplaced in the server room, even though the room has locked doors and cabinets. Which of the following would be the BEST solution to identify who is responsible?

  A. Install motion detection

  B. Install cameras.

  C. Install tamper detection.

  D. Hire a security guard.

  Correct Answer: B

  Installing cameras in the server room is the best solution to identify who is responsible for the equipment being moved and misplaced. Cameras provide a way to monitor the server room in real time and can be used to identify suspicious activity. Additionally, they provide a way to review past activity and allow you to review footage to determine who may be responsible for the misplacement of equipment.

• Question 46:

  Which of the following can be used to validate domain ownership by verifying the presence of pre-agreed content contained in a DNS record?

  A.SOA

  B. SRV

  C. AAA

  D. TXT

  Correct Answer: D

  "One final usage of the TXT resource record is how some cloud service providers, such as Azure, validate ownership of custom domains. You are provided with data to include in your TXT record, and once that is created, the domain is verified and able to be used. The thought is that if you control the DNS, then you own the domain name."

• Question 47:

  Which of the following commands can be used to display the IP address, subnet address, gateway address, and DNS address on a Windows computer?

  A. netstat -a

  B. ifconfig

  C. ip addr

  D. ipconfig /all

  Correct Answer: D

  The ipconfig command is a utility that allows you to view and modify the network configuration of a Windows computer. By running the command "ipconfig /all", you can view detailed information about the network configuration of your computer, including the IP address, subnet mask, default gateway, and DNS server addresses.

  Option A (netstat -a) is a command that displays active network connections and their status, but it does not display IP address or other network configuration information. Option B (ifconfig) is a command used on Linux and Unix systems to view and modify network configuration, but it is not available on Windows. Option C (ip addr) is a command used on Linux and Unix systems to view and modify network configuration, but it is not available on Windows.

• Question 48:

  A technician is configuring a static IP address on a new device in a newly created subnet. The work order specifies the following requirements:

  1.

  The IP address should use the highest address available in the subnet.

  2.

  The default gateway needs to be set to 172.28.85.94.

  3.

  The subnet mask needs to be 255.255.255.224.

  Which of the following addresses should the engineer apply to the device?

  A. 172.28.85.93

  B. 172.28.85.95

  C. 172.28.85.254

  D. 172.28.85.255

  Correct Answer: A

  255.255.255.224 /27 256 - 224= Block Size 32 Block Size Subnet Range:

  172.28.85.0

  172.28.85.32

  172.28.85.64

  172.28.85.96

  172.28.85.128

  Broadcast Range: -1 the Block size

  172.28.85.31

  172.28.85.63

  172.28.85.95

  172.28.85.127

  Usable IP Range:

  172.28.85.1 - 172.28.85.30

  172.28.85.33 - 172.28.85.62

  172.28.85.65 - 172.28.85.94

  172.28.85.97 - 172.28.85.126

• Question 49:

  A network administrator has received calls every day for the past few weeks from three users who cannot access the network. The administrator asks all the users to reboot their PCs, but the same users still cannot access the system. The following day, three different users report the same issue, and the administrator asks them all to reboot their PCs; however, this does not fix the issue. Which of the following is MOST likely occurring?

  A. Incorrect firewall settings

  B. Inappropriate VLAN assignment

  C. Hardware failure

  D. Overloaded CAM table in switch

  E. DHCP scope exhaustion

  Correct Answer: E

  Based on the information provided, it is unlikely that the CAM table is the problem. The CAM table is used in switches to map MAC addresses to switch ports and is typically updated dynamically as devices communicate on the network. If there were a problem with the CAM table, it would typically result in connectivity issues for all users connected to the affected switch, not just a few.

• Question 50:

  A company needs to virtualize a replica of its internal physical network without changing the logical topology and the way that devices behave and are managed. Which of the following technologies meets this requirement?

  A. NFV

  B. SDWAN

  C. VIP

  D. MPLS

  Correct Answer: A

  Network Function Virtualization (NFV) is a technology that allows for the virtualization of a replica of a network's physical topology and the way it behaves without changing the logical topology and the way that devices are managed. NFV allows for the virtualization of network functions such as routers, firewalls, and switches, resulting in increased flexibility and scalability. This makes NFV an ideal technology for companies looking to virtualize a replica of their internal physical network.