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Question 1:
A network administrator is configuring a server to be placed on the network. The end users will be accessing an application via a web browser that requires them to log into the application. Which of the following protocols would allow a secure connection?
A. SCP
B. SSH
C. HTTPS
D. SFTP
Correct Answer: C
Question 2:
A lab environment hosts Internet-facing web servers and other experimental machines, which technicians use for various tasks A technician installs software on one of the web servers to allow communication to the company\’s file server, but it is unable to connect to it Other machines in the building are able to retrieve files from the file server. Which of the following is the MOST likely reason the web server cannot retrieve the files, and what should be done to resolve the problem?
A. The lab environment\’s IDS is blocking the network traffic 1 he technician can whitelist the new application in the IDS
B. The lab environment is located in the DM2, and traffic to the LAN zone is denied by default. The technician can move the computer to another zone or request an exception from the administrator.
C. The lab environment has lost connectivity to the company router, and the switch needs to be rebooted. The technician can get the key to the wiring closet and manually restart the switch
D. The lab environment is currently set up with hubs instead of switches, and the requests are getting bounced back The technician can submit a request for upgraded equipment to management.
Correct Answer: B
The lab environment is located in the DMZ, and traffic to the LAN zone is denied by default. This is the most likely reason why the web server cannot retrieve files from the file server, and the technician can either move the computer to another zone or request an exception from the administrator to resolve the problem. A DMZ (Demilitarized Zone) is a network segment that separates the internal network (LAN) from the external network (Internet). It usually hosts public-facing servers such as web servers, email servers, or FTP servers that need to be accessed by both internal and external users. A firewall is used to control the traffic between the DMZ and the LAN zones, and usually denies traffic from the DMZ to the LAN by default for security reasons. Therefore, if a web server in the DMZ needs to communicate with a file server in the LAN, it would need a special rule or permission from the firewall administrator.
References: https://www.cisco.com/c/en/us/support/docs/ip/access-lists/13608-21.html
Question 3:
A network administrator needs to implement routing capabilities in a hypervisor. Which of the following should the administrator most likely implement?
A. VPC
B. Firewall
C. NFV
D. laaS
Correct Answer: C
To implement routing capabilities in a hypervisor, the administrator should most likely implement NFV (Network Functions Virtualization). NFV involves virtualizing network functions, such as routing, within a software environment rather than relying on dedicated hardware appliances. This allows for more flexibility, scalability, and efficient use of resources in a virtualized environment.
Question 4:
A network technician was troubleshooting an issue for a user who was being directed to cloned websites that were stealing credentials. The URLs were correct for the websites but an incorrect IP address was revealed when the technician
used ping on the user\’s PC After checking the is setting, the technician found the DNS server address was incorrect.
Which of the following describes the issue?
A. Rogue DHCP server
B. Misconfigured HSRP
C. DNS poisoning
D. Exhausted IP scope
Correct Answer: C
DNS poisoning is a type of attack that modifies the DNS records of a domain name to point to a malicious IP address instead of the legitimate one. This can result in users being directed to cloned websites that are stealing credentials, even if
they enter the correct URL for the website. The incorrect DNS server address on the user\’s PC could be a sign of DNS poisoning, as the attacker could have compromised the DNS server or spoofed its response to redirect the user\’s queries.
References:
https://www.comptia.org/blog/what-is-dns-poisoning
Question 5:
A network administrator implements a group of access points, only changing the SSID, credentials, and IP address. Shortly after, users begin reporting poor quality and video loss while on video calls in the conference room. Which of the following should the administrator do to MOST effectively troubleshoot during business hours?
A. Remove the current antennas and replace them with directional antennas on each AP.
B. Disconnect the AP and move it closer to the conference room.
C. Configure separate channels on APs that are not supporting the conference room.
D. Reboot the switch and each AP at the same time.
Correct Answer: C
Question 6:
A company built a new building at its headquarters location. The new building is connected to the company\’s LAN via fiber-optic cable. Multiple users in the new building are unable to access the company\’s intranet site via their web browser, but they are able to access internet sites. Which of the following describes how the network administrator can resolve this issue?
A. Correct the DNS server entries in the DHCP scope
B. Correct the external firewall gateway address
C. Correct the NTP server settings on the clients
D. Correct a TFTP Issue on the company\’s server
Correct Answer: A
Different building means different subnet. This means DHCP is being used which gives out DNS. You usually have multiple DNS servers in your lease. Regular internet means the external DNS works, and internal failing means the DNS server for inside the network was not given out correctly.
Question 7:
A network technician is installing a new SOHO wireless router for a client. After configuring and securing the wireless network, the technician begins hardening the wireless router. Which of the following should the network technician do FIRST?
A. Enable content filtering.
B. Back up the configurations of the device.
C. Configure an ACL for managing the device.
D. Filter MAC addresses.
Correct Answer: C
Question 8:
A customer wants to segregate the traffic between guests on a hypervisor. Which of the following does a technician need to configure to meet the requirement?
A. Virtual switches
B. OSPF routing
C. Load balancers
D. NIC teaming
E. Fibre Channel
Correct Answer: A
A virtual switch is a software-based switch that connects virtual machines on a hypervisor. A virtual switch can create and manage VLANs, which are logical segments of a network that isolate traffic between different groups of devices. A
customer can use virtual switches to segregate the traffic between guests on a hypervisor by creating a separate VLAN for each guest and assigning it to a virtual switch port.
References:
https://www.comptia.org/blog/what-is-a-virtual-switch
Question 9:
A technician is investigating an issue with connectivity at customer\’s location. The technician confirms that users can access resources locally but not over the internet The technician theorizes that the local router has failed and investigates further. The technician\’s testing results show that the route is functional: however, users still are unable to reach resources on the internal.
Which of the following describes what the technician should do NEXT?
A. Document the lessons learned
B. Escalate the issue
C. identify the symptoms.
D. Question users for additional information
Correct Answer: B
Among the options given, B is indeed the one conforming to CompTIA\’s methodology. C and D should have been done exhaustively in the first place. A comes last after a solution has been shown to work.
Question 10:
A network administrator is implementing process changes based on recommendations following a recent penetration test. The testers used a method to gain access to the network that involved exploiting a publicly available and fixed remote code execution vulnerability in the VPN appliance. Which of the following should the administrator do to BEST prevent this from happening again?
A. Change default passwords on internet-facing hardware.
B. Implement robust ACLs with explicit deny-all entries.
C. Create private VLANs for management plane traffic.
D. Routinely upgrade all network equipment firmware.
Correct Answer: D
Firmware is the software that runs on network equipment such as routers, switches, and VPN appliances. Firmware updates often contain bug fixes, security patches, and performance improvements that can prevent or mitigate vulnerabilities and attacks. By routinely upgrading all network equipment firmware, a network administrator can ensure that the network devices are running the latest and most secure versions of firmware and avoid exploiting known and fixed remote code execution vulnerabilities in the VPN appliance.
References: https://www.comptia.org/training/books/network-n10-008-study-guide (page 462)
Question 11:
A network technician needs to select an AP that will support at least 1.3Gbps and 5GHz only. Which of the following wireless standards must the AP support to meet the requirements?
A. B
B. AC
C. AX
D. N
E. G
Correct Answer: B
Wireless AC is a wireless standard that supports up to 1.3Gbps data rate and operates in the 5GHz frequency band only. Wireless AC is also backward compatible with wireless A and N devices that use the 5GHz band. Wireless AC is suitable for high-performance applications such as HD video streaming and online gaming. References: Network+ Study Guide Objective 2.2: Explain the purposes and properties of routing and switching. Subobjective: Wireless standards and their characteristics.
Question 12:
Which of the following physical security methods Is the MOST effective to prevent tailgating?
A. Biometrics in an access control vestibule
B. IP cameras with motion detection
C. Smart lockers with tamper protection
D. Badge readers plus a PIN pad
Correct Answer: A
Biometrics is a type of authentication that uses a person\’s physical characteristics, such as fingerprints, iris, or face, to verify their identity. An access control vestibule is a small room or area that separates two spaces and allows only one person to enter or exit at a time. Biometrics in an access control vestibule is the most effective physical security method to prevent tailgating, which is the unauthorized entry of a person behind another person who has legitimate access. References: Network+ Study Guide Objective 5.1: Summarize the importance of physical security controls.
Question 13:
A technician is installing the Wi-Fi infrastructure for legacy industrial machinery at a warehouse. The equipment only supports 802.11a and 802.11b standards. Speed of transmission is the top business requirement. Which of the following is the correct maximum speed for this scenario?
A. 11Mbps
B. 54Mbps
C. 128Mbps
D. 144Mbps
Correct Answer: B
802.11b (Wi-Fi 1) 11 Mbps 100 meter maximum effective range
802.11a (Wi-Fi 2) 54 Mbps 50 meter maximum effective range
Question 14:
An administrator is replacing an existing WAP because the customer is reporting that the connection speeds are too slow. Which of the following should be installed?
A. 802.11a
B. 802.11b
C. 802.11g
D. 802.11n
Correct Answer: D
Question 15:
A company wants to invest in new hardware for the core network infrastructure. The management team requires that the infrastructure be capable of being repaired in less than 60 minutes if any major part fails. Which of the following metrics is MOST likely associated with this requirement?
A. RPO
B. MTTR
C. FHRP
D. MTBF
Correct Answer: B
MTTR is directly related to how quickly a system can be repaired if any major part fails3. The management team requires that the infrastructure be capable of being repaired in less than 60 minutes, which means they have a low MTTR requirement. MTTR stands for Mean Time To Repair and is a metric used to measure the average amount of time it takes to repair a failed component or system. In this case, the requirement is for the infrastructure to be capable of being repaired in less than 60 minutes if any major part fails, which means the MTTR should be less than 60 minutes.