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NEW QUESTION 341
A university is implementing a new campus wireless network. A network administrator needs to configure the network to support a large number of devices and high-bandwidth demands from students. Which of the following wireless technologies should the administrator consider for this scenario?
A. Bluetooth
B. Wi-Fi 6E
C. 5G
D. LTE
Answer: B
Explanation:
Wi-Fi 6E is the best choice for high-density environments, as it provides higher speeds, more capacity, and lower latency.
NEW QUESTION 342
Users usually use RDP to connect to a terminal server with hostname TS19 that points to 10.0.100.19. However, users recently have been unable to connect to TS19. The technician pings 10.0.100.19 and gets an unreachable error. Which of the following is the most likely cause?
A. The users are on the wrong subnet.
B. The DHCP server renewed the lease.
C. The IP address was not reserved.
D. The hostname was changed.
Answer: A
Explanation:
If a ping to 10.0.100.19 is unreachable, the most likely issue is that users are on the wrong subnet and cannot communicate with the server.
NEW QUESTION 343
A network engineer discovers network traffic that is sending confidential information to an unauthorized and unknown destination. Which of the following best describes the cause of this network traffic?
A. Adware
B. Ransomware
C. Darkware
D. Malware
Answer: D
Explanation:
Malware refers to any malicious software that can exfiltrate confidential data, including spyware, trojans, and rootkits. This fits the scenario where unauthorized data transfer is occurring.
NEW QUESTION 344
Which of the following network ports is used when a client accesses an SFTP server?
A. 22
B. 80
C. 443
D. 3389
Answer: A
Explanation:
SFTP (Secure File Transfer Protocol) operates over port 22, using SSH (Secure Shell) encryption for secure file transfers.
NEW QUESTION 345
A network administrator installed a new VLAN to the network after a company added an additional floor to the office. Users are unable to obtain an IP address on the new VLAN, but ports on existing VLANs are working properly. Which of the following configurations should the administrator update?
A. Scope size.
B. Address reservations.
C. Lease time.
D. IP helper.
Answer: D
Explanation:
When a new VLAN is created, it typically exists on a different subnet. If DHCP servers are on a different VLAN, the network needs an IP helper address to forward DHCP requests correctly. Without it, clients in the new VLAN won’t receive an IP address.
NEW QUESTION 346
Which of the following is a major difference between an IPS and IDS?
A. An IPS needs to be installed in line with traffic and an IDS does not.
B. An IPS is signature-based and an IDS is not.
C. An IPS is less susceptible to false positives than an IDS.
D. An IPS requires less administrative overhead than an IDS.
Answer: A
Explanation:
The key difference is that an Intrusion Prevention System (IPS) is installed in line with network traffic, allowing it to actively block threats. In contrast, an Intrusion Detection System (IDS) only monitors and alerts without actively blocking traffic.
NEW QUESTION 347
A company recently converted most of the office laptops to connect wirelessly to the corporate network. After a recent high-traffic malware attack, narrowing the event to a specific user was difficult because of the wireless configuration. Which of the following actions should the company take?
A. Restrict users to the 5GHz frequency.
B. Upgrade to a mesh network.
C. Migrate from PSK to Enterprise.
D. Implement WPA2 encryption.
Answer: C
Explanation:
Using Pre-Shared Key (PSK) authentication means that all users share the same Wi-Fi password, making it difficult to identify individual users when security incidents occur. Migrating to WPA2-Enterprise (or WPA3-Enterprise) replaces PSK authentication with individual user credentials using 802.1X authentication and a RADIUS server. This allows the organization to:
– Track and log specific user activity.
– Enforce per-user authentication policies.
– Improve network security.
NEW QUESTION 348
Which of the following connector types would most likely be used to connect to an external antenna?
A. BNC
B. ST
C. LC
D. MPO
Answer: A
Explanation:
BNC connectors are commonly used for coaxial cables, including those connecting to external antennas in Wi-Fi, radio, and surveillance systems.
NEW QUESTION 349
Which of the following can be implemented to add an additional layer of security between a corporate network and network management interfaces?
A. Jump box.
B. Console server.
C. API interface.
D. In-band management.
Answer: A
Explanation:
A jump box is a hardened, isolated system that provides secure access to critical infrastructure devices like routers and firewalls.
NEW QUESTION 350
A user cannot access an external server for a client after connecting to a VPN. Which of the following commands would a support agent most likely use to examine the issue? (Choose two.)
A. nslookup
B. tcpdump
C. arp
D. dig
E. tracert
F. route print
Answer: EF
Explanation:
When a user connects to a VPN and experiences connectivity issues to an external server, the problem is often related to routing or network path issues:
– Traces the path packets take from the user’s device to the destination server.
– Helps determine if the traffic is being blocked or misrouted.
– Displays the device’s routing table.
– Helps diagnose whether traffic is being sent to the VPN tunnel instead of the correct external server.
NEW QUESTION 351
Which of the following explains what happens if a packet is lost in transit when using UDP?
A. The data link layer will recognize the error and resend the packet.
B. IP uses the TTL field to track packet hops and will resend the packet if necessary.
C. If the sender does not receive a UDP acknowledgement, the packet will be resent.
D. Some applications will recognize the loss and initiate a resend of the packet if necessary.
Answer: D
NEW QUESTION 352
A network technician sets up a computer on the accounting department floor for a user from the marketing department. The user reports that they cannot access the marketing department’s shared drives but can access the internet. Which of the following is the most likely cause of this issue?
A. Mismatched switchport duplex.
B. Misconfigured gateway settings.
C. Incorrect VLAN assignment.
D. SVI is assigned to the wrong IP address.
Answer: C
NEW QUESTION 353
A network administrator is unable to ping a remote server from a newly connected workstation that has been added to the network. Ping to 127.0.0.1 on the workstation is failing. Which of the following should the administrator perform to diagnose the problem?
A. Verify the NIC interface status.
B. Verify the network is not congested.
C. Verify the router is not dropping packets.
D. Verify that DNS is resolving correctly.
Answer: A
NEW QUESTION 354
Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?
A. Site-to-site VPN.
B. GRE tunnel.
C. VXLAN.
D. Dedicated line.
Answer: A
NEW QUESTION 355
After a networking intern plugged in a switch, a significant number of users in a building lost connectivity. Which of the following is the most likely root cause?
A. VTP update.
B. Port security issue.
C. LLDP misconfiguration.
D. Native VLAN mismatch.
Answer: D
NEW QUESTION 356
A network administrator needs to create a way to redirect a network resource that has been on the local network but is now hosted as a SaaS solution. Which of the following records should be used to accomplish the task?
A. TXT
B. AAA
C. PTR
D. CNAME
Answer: D
NEW QUESTION 357
A network administrator wants to increase network security by preventing client devices from communicating directly with each other on the same subnet. Which of the following technologies should be implemented?
A. ACL.
B. Trunking.
C. Port security.
D. Private VLAN.
Answer: D
Explanation:
Private VLANs (PVLANs) are used to segment devices on the same subnet and switch so they cannot communicate with each other, while still accessing a shared resource like a router or gateway. This is often used in shared hosting or DMZ environments.
NEW QUESTION 358
A network architect is implementing an off-premises computing facility and needs to ensure that operations will not be impacted by major outages. Which of the following should the architect consider?
A. Hot site.
B. DCI.
C. Direct Connect.
D. Active-passive approach.
Answer: A
Explanation:
A hot site is a fully operational backup facility with hardware, network, and data synchronization already in place. It allows for immediate failover in the event of a disaster, minimizing downtime.
NEW QUESTION 359
Which of the following would most likely be utilized to implement encryption in transit when using HTTPS?
A. SSH
B. TLS
C. SCADA
D. RADIUS
Answer: B
Explanation:
TLS (Transport Layer Security) is the protocol that provides encryption in transit for HTTPS. It ensures data is encrypted between the client (browser) and the web server, protecting it from interception or tampering.
NEW QUESTION 360
Which of the following typically uses compromised systems that become part of a bot network?
A. Evil twin attack.
B. DDoS attack.
C. XML injection.
D. Brute-force password attack.
Answer: B
Explanation:
A DDoS (Distributed Denial of Service) attack is often launched from botnets – networks of compromised systems (bots or zombies) under the control of an attacker. These devices flood the target with traffic to disrupt services.
NEW QUESTION 361
A technician is implementing a new SD-WAN device with a default configuration. The technician receives a URL via email and connects the new device to the internet to complete the installation. Which of the following is this an example of?
A. SASE device installation.
B. Zero-touch provisioning.
C. Infrastructure as code.
D. Configuration management.
Answer: B
Explanation:
This process describes Zero-touch provisioning (ZTP), where a device automatically pulls its configuration from a cloud controller or URL once connected to the internet. It’s common in SD-WAN and modern network appliances.
NEW QUESTION 362
Which of the following VPN types provides secure remote access to the network resources through a web portal?
A. Proxy.
B. Clientless.
C. Site-to-site.
D. Direct connect.
Answer: B
Explanation:
Clientless VPNs allow users to access network resources through a secure web portal using a browser, with no VPN software needed. This is ideal for occasional access to internal resources via HTTPS.
NEW QUESTION 363
A company is expanding to another floor in the same building. The network engineer configures a new switch with the same VLANs as the existing stack. When the network engineer connects the new switch to the existing stack, all users lose connectivity. Which of the following is the MOST likely reason?
A. The new switch has unused ports disabled.
B. The new switch does not have a default gateway.
C. The new switch is connected to an access port.
D. The new switch is in a spanning tree loop.
Answer: D
Explanation:
This describes a Spanning Tree Protocol (STP) loop. If STP isn’t correctly configured or a redundant link is added without STP protection, it causes broadcast storms and network outages.
NEW QUESTION 364
A network technician receives a new ticket while working on another issue. The new ticket is critical to business operations. Which of the following documents should the technician reference to determine which ticket to complete first?
A. NDA
B. AUP
C. SLA
D. MOU
Answer: C
Explanation:
An SLA (Service Level Agreement) defines performance expectations, including response time, prioritization, and resolution time for services and support issues. It helps the technician determine which task has higher priority based on business impact.
NEW QUESTION 365
A network engineer is setting up a new VoIP network for a customer. The current network is segmented only for computers and servers. No additional switch ports can be used in the new network. Which of the following does the engineer need to do to configure the network correctly? (Choose two.)
A. Change network translation definitions.
B. Enable 802.1Q.
C. Implement a routing protocol.
D. Set up voice VLANs.
E. Reconfigure the DNS.
F. Place devices in the perimeter network.
Answer: BD
Explanation:
To support VoIP on the same physical ports used by computers:
– Enable 802.1Q: This standard supports VLAN tagging, allowing voice and data traffic to share the same port using separate VLANs.
– Set up voice VLANs: Separating voice traffic into its own VLAN improves QoS and manageability.
NEW QUESTION 366
A company discovers on video surveillance recordings that an unauthorized person installed a rogue access point in its secure facility. Which of the following allowed the unauthorized person to do this?
A. Evil twin.
B. Honeytrap.
C. Wardriving.
D. Tailgating.
Answer: D
Explanation:
Tailgating is a physical security breach where someone follows an authorized person into a restricted area without proper credentials. Once inside, the attacker can install rogue devices like unauthorized APs.
NEW QUESTION 367
A network engineer is troubleshooting connectivity for a newly installed server on an existing VLAN. The engineer reviews the following output:
C:\> ipconfig
IP Address: 192.168.100.225
Mask: 255.255.255.224
Gateway: 192.168.100.254
Router# show ip route
C 192.168.100.0/24 is directly connected, GigabitEthernet0/0
Which of the following describes the issue?
A. The server has an incorrect subnet mask.
B. There is a duplicate IP address on the network.
C. The DHCP address pool is exhausted.
D. The router is missing a default route.
Answer: A
Explanation:
The server’s subnet mask is 255.255.255.224 (/27), which covers IPs from 192.168.100.224 to 192.168.100.255. However, the router only recognizes 192.168.100.0/24, indicating a mismatch between the server’s subnet and the router’s network. Correct mask for the /24 network is 255.255.255.0, allowing 256 IPs from 192.168.100.0 to 192.168.100.255. This mismatch would result in routing issues, especially with the gateway outside of the subnet range.
NEW QUESTION 368
Which of the following dynamic routing protocols is used on the internet?
A. EIGRP
B. BGP
C. RIP
D. OSPF
Answer: B
Explanation:
BGP (Border Gateway Protocol) is the only dynamic routing protocol used across the internet. It’s classified as an Exterior Gateway Protocol (EGP), responsible for routing between different autonomous systems (ASes).
NEW QUESTION 369
During a recent security assessment, an assessor attempts to obtain user credentials by pretending to be from the organization’s help desk. Which of the following attacks is the assessor using?
A. Social engineering.
B. Tailgating.
C. Shoulder surfing.
D. Smishing.
E. Evil twin.
Answer: A
Explanation:
This is a classic example of social engineering, where an attacker manipulates individuals into giving up confidential information, such as credentials, by pretending to be someone trustworthy (like help desk staff).
NEW QUESTION 370
A company recently rearranged some users’ workspaces and moved several users to previously used workspaces. The network administrator receives a report that all of the users who were moved are having connectivity issues. Which of the following is the MOST likely reason?
A. Ports are error-disabled.
B. Ports have an incorrect native VLAN.
C. Ports are having an MDIX issue.
D. Ports are trunk ports.
Answer: B
Explanation:
The most likely cause is that the switch ports were previously configured for a different VLAN than the one the users’ computers are on. If the native VLAN on the port doesn’t match the end device’s VLAN, communication fails.
NEW QUESTION 371
An ISP provided a company with a pre-configured modem and five public static IP addresses. Which of the following does the company’s firewall require to access the internet? (Choose two.)
A. NTP server.
B. Default gateway.
C. The modem’s IP address.
D. One static IP address.
E. DNS servers.
F. DHCP server.
Answer: BD
Explanation:
To access the internet using static IPs, the firewall (or router) must be configured correctly:
– Default gateway: This is essential because it tells the firewall where to send outbound traffic destined for outside the local network.
– One static IP address: The firewall must be assigned one of the static IPs to communicate over the public internet.
NEW QUESTION 372
A company reports that their facsimile machine no longer has a dial tone when trying to send a fax. The phone cable is damaged on one end. Which of the following types of connectors should a technician replace?
A. F-type
B. RJ45
C. SC
D. RJ11
Answer: D
Explanation:
Fax machines use analog phone lines, which are connected using RJ11 connectors. These are standard telephone connectors with 4 or 6 positions and are used for POTS (Plain Old Telephone Service) lines. F-type is used for coaxial cables (e.g., TV and cable modems). RJ45 is used for Ethernet network connections. SC (Subscriber Connector) is used for fiber optic connections, not analog telephone lines.
NEW QUESTION 373
Which of the following is the part of a disaster recovery (DR) plan that identifies the critical systems that should be recovered first after an incident?
A. RTO
B. SLA
C. MTBF
D. SIEM
Answer: A
Explanation:
– RTO stands for Recovery Time Objective, which defines the maximum acceptable amount of time that a system, application, or function can be down after a failure or disaster. It helps prioritize which systems need to be recovered first based on their importance to business operations.
– SLA (Service Level Agreement) refers to an agreement between a service provider and a customer regarding expected performance and availability, but it does not dictate recovery order.
– MTBF (Mean Time Between Failures) is a measure of reliability and time between hardware or system failures.
– SIEM (Security Information and Event Management) is a centralized tool for logging and alerting but not relevant to DR recovery prioritization.
NEW QUESTION 374
A company recently implemented a videoconferencing system that utilizes large amounts of bandwidth. Users start reporting slow internet speeds and an overall decrease in network performance. Which of the following are most likely the causes of the network performance issues? (Choose two.)
A. DNS misconfiguration.
B. Inadequate network security.
C. Malware or a virus.
D. Outdated software.
E. Incorrect QoS settings.
F. Network congestion.
Answer: EF
Explanation:
When high-bandwidth services like videoconferencing are introduced, two primary factors may degrade performance:
– QoS Settings: QoS (Quality of Service) is used to prioritize traffic. If not configured correctly, critical services like video may not get the necessary bandwidth and prioritization.
– Network Congestion: Video services consume large amounts of data. If the network doesn’t have sufficient bandwidth or is not segmented properly, congestion will slow down all services.
NEW QUESTION 375
A network administrator is troubleshooting a connectivity issue between two devices on two different subnets. The administrator verifies that both devices can successfully ping other devices on the same subnet. Which of the following is the most likely cause of the connectivity issue?
A. Incorrect default gateway.
B. Faulty Ethernet cable.
C. Wrong duplex settings.
D. VLAN mismatch.
Answer: A
Explanation:
When two devices on different subnets are unable to communicate, but can communicate with other devices on their own subnet, the issue is most often related to routing. Devices on different subnets require a default gateway to route traffic between networks. If the default gateway is incorrectly configured, the device won’t know how to reach other subnets.
NEW QUESTION 376
……
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