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Question 1:
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 2:
Several users from the same building are reporting connectivity issues. The SFP at that building\’s IDF switch is showing a link light, but there is no link light to the corresponding switch\’s SFP at the MDF. Which of the following is the MOST likely cause?
A. A crossover cable is being used.
B. DB loss is too high on all strands.
C. Only TX or RX strand is working.
D. TX and RX are reversed.
Correct Answer: C
Question 3:
A Wi-Fi network was recently deployed in a new, multilevel budding. Several issues are now being reported related to latency and drops in coverage. Which of the following is the FIRST step to troubleshoot the issues?
A. Perform a site survey.
B. Review the AP placement
C. Monitor channel utilization.
D. Test cable attenuation.
Correct Answer: A
The first step to troubleshoot issues with a Wi-Fi network would be to perform a site survey to gather information about the physical environment, such as signal strength and interference from other sources, which can impact network performance. Based on the results of the site survey, the placement of APs and other network components can be reviewed, channel utilization can be monitored, and cable attenuation can be tested to address the reported issues.
Question 4:
A network administrator is configuring a link-state routing protocol for traffic. Which of the following routing protocols should be implemented?
A. BGP
B. EIGRP
C. OSPF
D. RIPv2
Correct Answer: B
Question 5:
A network engineer needs to pass both data and telephony on an access port. Which or the following features should be configured to meet this requirement?
A. VLAN
B. VoIP
C. VIP
D. VRRP
Correct Answer: A
Question 6:
A technician discovered that some information on the local database server was changed during a tile transfer to a remote server. Which of the following should concern the technician the MOST?
A. Confidentiality
B. Integrity
C. DDoS
D. On-path attack
Correct Answer: B
The technician should be concerned the MOST about integrity1. Integrity is the property of data that ensures it is accurate, complete, and consistent. When information on the local database server is changed during a file transfer to a remote server, it means that the integrity of the data has been compromised. This could be due to a malicious attack, a network error, a software bug, or a human mistake. The technician should investigate the cause of the data change and take appropriate measures to restore the integrity of the data and prevent future incidents.
Question 7:
Which of the following technologies is MOST likely used to provide connectivity to multiple IoT devices within a room without access to the WLAN?
A. IR
B. 802.11
C. Bluetooth
D. NFC
Correct Answer: C
Question 8:
A network technician is observing the behavior of an unmanaged switch when a new device is added to the network and transmits data. Which of the following BEST describes how the switch processes this information?
A. The data is flooded out of every port. including the one on which it came in.
B. The data is flooded out of every port but only in the VLAN where it is located.
C. The data is flooded out of every port, except the one on which it came in
D. The data is flooded out of every port, excluding the VLAN where it is located
Correct Answer: C
The switch processes the data by flooding it out of every port, except the one on which it came in. Flooding is a process where a switch sends a data frame to all ports except the source port when it does not have an entry for the destination MAC address in its MAC address table. Flooding allows the switch to learn the MAC addresses of the devices connected to its ports and update its MAC address table accordingly. Flooding also ensures that the data frame reaches its intended destination, even if the switch does not know its location.
References: https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10556-16.html
Question 9:
Which of the following is the physical topology for an Ethernet LAN?
A. Bus
B. Ring
C. Mesh
D. Star
Correct Answer: D
In a Star topology, all devices on the LAN are connected to a central hub or switch. The hub or switch acts as a central point for data transmission and reception. Each device on the LAN has a dedicated connection to the hub or switch, and data is transmitted between devices through the hub or switch.
Question 10:
A user is required to log in to a main web application, which then grants the user access to all other programs needed to complete job-related tasks. Which of the following authentication methods does this setup describe?
A. SSO
B. RADIUS
C. TACACS+
D. Multifactor authentication
E. 802.1X
Correct Answer: A
The scenario you\’ve described, where a user logs in to a main web application that grants access to other programs needed for job-related tasks, is typically implemented using a Single Sign-On (SSO) solution.
Single Sign-On (SSO) allows a user to authenticate once with a central identity provider (such as the main web application) and then gain access to multiple other applications without needing to provide separate credentials for each application. This streamlines the authentication process, enhances user experience, and improves security by centralizing user authentication and access control.
Question 11:
Which of the following BEST describes a North-South traffic flow?
A. A public Internet user accessing a published web server
B. A database server communicating with another clustered database server
C. A Layer 3 switch advertising routes to a router
D. A management application connecting to managed devices
Correct Answer: A
North-South traffic flow refers to data communication between networks or devices located in different geographical locations, usually between a client or end-user device and a server or data center. This is commonly used to describe a public Internet user accessing a published web server.
Question 12:
Which of the following connector types would Sandy, a network technician, use to connect a serial cable?
A. RJ-11
B. BNC
C. LC
D. DB-9
Correct Answer: D
Question 13:
A company cell phone was stolen from a technician\’s vehicle. The cell phone has a passcode, but it contains sensitive information about clients and vendors. Which of the following should also be enabled?
A. Factory reset
B. Autolock
C. Encryption
D. Two-factor authentication
Correct Answer: C
Encryption is a process that converts sensitive information into an unreadable format, which can only be accessed with a decryption key. In the event of a device being stolen, encryption can help protect the sensitive data from unauthorized access. Without encryption, a thief may be able to access the data stored on the phone by bypassing the passcode or removing the device\’s memory card.
Question 14:
Client devices cannot enter a network, and the network administrator determines the DHCP scope is exhausted. The administrator wants to avoid creating a new DHCP pool. Which of the following can the administrator perform to resolve the issue?
A. Install load balancers
B. Install more switches
C. Decrease the number of VLANs
D. Reduce the lease time
Correct Answer: D
Reducing the lease time is the best answer here. While there isn\’t much additional info regarding how long it currently is, if some jabroni configured a lease time of two weeks, there will be a bunch of lingering leases that aren\’t in use and could be utilized by new devices.
Question 15:
A technician installed an 8-port switch in a user\’s office. The user needs to add a second computer in the office, so the technician connects both PCs to the switch and connects the switch to the wall jack. However, the new PC cannot connect to network resources. The technician then observes the following:
1.
The new computer does not get an IP address on the client\’s VLAN.
2.
Both computers have a link light on their NICs.
3.
The new PC appears to be operating normally except for the network issue.
4.
The existing computer operates normally.
Which of the following should the technician do NEXT to address the situation?
A. Contact the network team to resolve the port security issue.
B. Contact the server team to have a record created in DNS for the new PC.
C. Contact the security team to review the logs on the company\’s SIEM.
D. Contact the application team to check NetFlow data from the connected switch.
Correct Answer: A