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Question 1:
Which of the following can be used to store various types of devices and provide contactless delivery to users?
A. Asset tags
B. Biometrics
C. Access control vestibules
D. Smart lockers
Correct Answer: D
An access control vestibule is part of a physical access control system that typically provides a space between two sets of interlocking doors. Vestibules are designed to prevent unauthorized individuals from following authorized individuals into facilities with controlled access.
Question 2:
Which of the following must be functioning properly in order for a network administrator to create an accurate timeline during a troubleshooting process?
A. NTP
B. IP helper
C. Syslog
D. MySQL
Correct Answer: A
NTP is responsible for synchronizing the time across devices in a network, and Syslog relies on accurate time stamps to create an accurate timeline. If the NTP service is not functioning correctly, then the time on the devices in the network may be out of sync, and the timestamps in Syslog messages may not be accurate.
it\’s important to ensure that the NTP service is functioning correctly when troubleshooting network issues that require an accurate timeline. By ensuring that the time on all devices in the network is in sync, network administrators can create an accurate timeline of events, making it easier to troubleshoot and identify the root cause of problems.
Question 3:
An auditor assessing network best practices was able to connect a rogue switch into a network Jack and get network connectivity. Which of the following controls would BEST address this risk?
A. Activate port security on the switchports providing end user access.
B. Deactivate Spanning Tree Protocol on network interfaces that are facing public areas.
C. Disable Neighbor Resolution Protocol in the Layer 2 devices.
D. Ensure port tagging is in place for network interfaces in guest areas
Correct Answer: A
Activate port security on the switchports providing end user access would BEST address the risk of a rogue switch being connected to the network. Port security limits the number of devices that can connect to a particular switchport, thereby preventing unauthorized devices from connecting to the network. By limiting the number of MAC addresses allowed on each switchport, the network administrator can help prevent rogue devices from connecting and potentially causing security issues.
Question 4:
A network administrator is reviewing the following metrics from a network management system regarding a switchport. The administrator suspects an issue because users are calling in regards to the switchport\’s performance:
Based on the information in the chart above, which of the following fs the cause of these performance issues?
A. The connected device is exceeding the configured MTU.
B. The connected device is sending too many packets
C. The switchport has been up for too long
D. The connected device is receiving too many packets.
E. The switchport does not have enough CRCs
Correct Answer: A
Question 5:
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 6:
A network administrator responds to a support ticket that was submitted by a customer who is having issues connecting to a website inside of the company network The administrator verities that the customer could not connect to a website
using a URL.
Which of the following troubleshooting steps would be BEST for the administrator to take?
A. Check for certificate issues
B. Contact the ISP
C. Attempt to connect to the site via IP address
D. Check the NTP configuration.
Correct Answer: C
The best option for the administrator to take would be to attempt to connect to the site via IP address. This will help to determine if the issue is related to the website\’s DNS address or if the site itself is not accessible. Checking for certificate issues may be necessary, but this should be done after the administrator has attempted to connect to the site via IP address. Contacting the ISP is unnecessary since the issue is related to the website inside of the company network, and checking the NTP configuration is not relevant to this issue.
When a customer is having issues connecting to a website using a URL, one of the first troubleshooting steps a network administrator should take is attempting to connect to the site using the IP address of the website. This will help to determine if the issue is related to a DNS resolution problem or a connectivity problem. If the administrator is able to connect to the website using the IP address, then the issue may be related to a DNS problem. However, if the administrator is still unable to connect, then the issue may be related to a connectivity problem. In either case, further troubleshooting steps will be necessary. Checking for certificate issues or NTP configuration, and contacting the ISP would not be the BEST initial steps in this scenario.
Question 7:
A customer has asked a technician to upgrade the wireless router to the fastest speed possible. The technician performs a site survey and notices several older devices will not be able to connect to router that operates In the 5GHz range. Which of the following options should the technician suggest to the customer?
A. 802. 11a
B. 802. 11ac
C. 802. 11b
D. 802. 11n
Correct Answer: B
Question 8:
Which of the following is true about an IP address if the first bit is a one and the second bit is a zero?
A. The address is a Class A address.
B. The address is a Class B address.
C. The address is a Class C address.
D. The address is a Class D address.
Correct Answer: B
Question 9:
A technician is connecting DSL for a new customer. After installing and connecting the on-premises equipment, the technician verifies DSL synchronization. When connecting to a workstation, however, the link LEDs on the workstation and modem do not light up. Which of the following should the technician perform during troubleshooting?
A. Identify the switching loops between the modem and the workstation.
B. Check for asymmetrical routing on the modem.
C. Look for a rogue DHCP server on the network.
D. Replace the cable connecting the modem and the workstation.
Correct Answer: D
If the link LEDs on the workstation and modem do not light up when connecting to a workstation, it could indicate a problem with the cable connecting them. The cable could be damaged, defective, or incompatible with the devices. A technician should replace the cable with a known good one and check if the link LEDs light up. If not, the problem could be with the network interface cards (NICs) on the workstation or modem. References: https://www.comptia.org/blog/whatis-link-light
Question 10:
A junior network engineer is trying to change the native network ID to a non-default value that can then be applied consistently throughout the network environment. Which of the following issues is the engineer attempting to prevent?
A. DDoS
B. ARP spoofing
C. VLAN hopping
D. Rogue DHCP
Correct Answer: C
VLAN hopping is a security vulnerability that can occur in situations where a switch incorrectly forwards traffic between different VLANs that should be isolated from each other. One common method attackers use to exploit VLAN hopping is by sending frames with 802.1Q tags (VLAN tags) that belong to different VLANs, causing the switch to incorrectly forward the traffic between VLANs.
Question 11:
A network engineer is provisioning a new Linux server in a public cloud. Which of the following types of cloud service should be utilized?
A. PaaS
B. SaaS
C. DaaS
D. laaS
Correct Answer: A
Question 12:
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 13:
A company has wireless APS that were deployed with 802.11g. A network engineer has noticed more frequent reports of wireless performance issues during the lunch hour in comparison to the rest of the day. The engineer thinks bandwidth consumption will increase while users are on their breaks, but network utilization logs do not show increased bandwidth numbers. Which Of the following would MOST likely resolve this issue?
A. Adding more wireless APS
B. Increasing power settings to expand coverage
C. Configuring the APS to be compatible with 802.1la
D. Changing the wireless channel used
Correct Answer: C
802.11g is an older wireless standard that operates in the 2.4 GHz frequency band and has a maximum data rate of 54 Mbps. 802.11a is a newer wireless standard that operates in the 5 GHz frequency band and has a maximum data rate of 54 Mbps. By configuring the APS to be compatible with 802.11a, the network engineer can reduce interference and congestion in the 2.4 GHz band and improve wireless performance. References: Network+ Study Guide Objective 2.5: Implement network troubleshooting methodologies
Question 14:
Kim, a network administrator, should consult which documentation sources FIRST to determine the cause of recent network issues?
A. Network map
B. Cable management
C. Change management
D. Asset management
Correct Answer: C
Question 15:
A technician needs to back up network devices to a central location to prepare for a natural disaster. Which of the following should the technician use?
A. VPN
B. TFTP
C. RDP
D. VNC
Correct Answer: A