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| Section | Objectives |
|---|---|
| Topic 1: Network Implementation | - Switching technologies - Routing technologies - Network storage and virtualization - Wireless networking |
| Topic 2: Networking Concepts | - Network topologies and types (LAN, WAN, WLAN) - OSI model and TCP/IP model - Ports, protocols, and services - IPv4 and IPv6 addressing |
| Topic 3: Network Security | - Security concepts and threats - Network hardening techniques - Access control and authentication |
| Topic 4: Network Operations | - Business continuity and disaster recovery - Network documentation and diagrams - Monitoring and optimization |
| Topic 5: Network Troubleshooting | - Tools and diagnostic techniques - Troubleshooting methodology - Common network issues |
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NEW QUESTION # 93
Which of the following is used to stage copies of a website closer to geographically dispersed users?
Answer: A
Explanation:
A Content Delivery Network (CDN) caches website content across multiple geographically distributed servers to reduce latency and improve load times for users worldwide.
NEW QUESTION # 94
A new backup system takes too long to copy files to the new SAN each night. A network administrator makes a simple change to the network and the devices to decrease backup times. Which of the following does the network administrator change?
Answer: B
Explanation:
Increasing the MTU (Maximum Transmission Unit) size allows larger frames to be transmitted, reducing overhead and improving throughput - especially for large file transfers like backups.
A . QoS prioritizes traffic but doesn't reduce backup times directly.
B . SDN is a network management model, not a parameter change.
D . VXLAN encapsulates VLANs, not relevant to backup speeds.
E . TTL is for packet lifetime, not throughput.
Reference:
Domain: Network Infrastructure - MTU, jumbo frames, performance tuning.
NEW QUESTION # 95
A network technician receives a ticket from an employee who is working on PC 1 but is unable to connect to the database server. The technician pings the database server from PC 1, but the request times out. After reviewing the utilization of Switch 1 and Switch 2, the technician finds high CPU utilization and sees that the MAC table is continuously changing.
INSTRUCTIONS
Configure Switch 1 and Switch 2 to remediate the employee ' s issue. Then, validate connectivity between PC
1 and the database server.
Switch 1 and Switch 2 are already in configuration mode. Type help to view a list of available commands.
Answer:
Explanation:
See the solution in Explanation below.
Explanation:
Switch 1
spanning-tree vlan 10 root primary
spanning-tree vlan 20 root secondary
Switch 2
spanning-tree vlan 20 root primary
spanning-tree vlan 10 root secondary
This PBQ is pointing to a switching loop / MAC flapping problem. The biggest clues are the high CPU utilization and the fact that the MAC table is continuously changing . That behavior is classic for a Layer 2 loop when redundant links exist between switches and no proper spanning-tree root role has been established.
The available commands shown in the screenshots are limited to spanning-tree vlan , so this is not an interface shutdown question. The fix is to use STP per VLAN and make one switch the preferred root for one VLAN and the other switch the preferred root for the other VLAN. That prevents both uplinks from forwarding in an uncontrolled loop while still giving redundancy.
A clean design is:
* Switch 1 root primary for VLAN 10
* Switch 2 root primary for VLAN 20
* Make each opposite switch root secondary for failover
That stabilizes Layer 2 forwarding, stops MAC address flapping, reduces CPU load, and restores normal connectivity. After applying the STP root settings, the user should be able to ping 192.168.1.31 from PC 1 successfully. If your simulator asks for validation, run the ping again from PC 1 to the database server.
NEW QUESTION # 96
A company is implementing a wireless solution in a high-density environment. Which of the following 802.11 standards is used when a company is concerned about device saturation and converage?
Answer: A
Explanation:
802.11ax, also known as Wi-Fi 6, is designed for high-density environments and improves device saturation and coverage compared to previous standards.
* 802.11ac: While it offers high throughput, it is not optimized for high-density environments as effectively as 802.11ax.
* 802.11ax (Wi-Fi 6): Introduces features like OFDMA, MU-MIMO, and BSS Coloring, which enhance performance in crowded environments, reduce latency, and increase the number of devices that can be connected simultaneously.
* 802.11g and 802.11n: Older standards that do not offer the same level of efficiency or support for high device density as 802.11ax.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Covers the 802.11 standards and their capabilities.
* Cisco Networking Academy: Provides training on Wi-Fi technologies and best practices for high-density deployments.
* Network+ Certification All-in-One Exam Guide: Discusses the various 802.11 standards and their applications in different environments.
NEW QUESTION # 97
A network administrator is implementing security zones for each department. Which of the following should the administrator use to accomplish this task?
Answer: A
Explanation:
* Understanding ACLs:
* Access Control Lists (ACLs): A set of rules used to control network traffic and restrict access to network resources by filtering packets based on IP addresses, protocols, or ports.
* Implementing Security Zones:
* Defining Zones: ACLs can be used to create security zones by applying specific rules to different departments, ensuring that only authorized traffic is allowed between these zones.
* Control Traffic: ACLs control inbound and outbound traffic at network boundaries, enforcing security policies and preventing unauthorized access.
* Comparison with Other Options:
* Port Security: Limits the number of devices that can connect to a switch port, preventing MAC address flooding attacks, but not used for defining security zones.
* Content Filtering: Blocks or allows access to specific content based on predefined policies, typically used for web filtering rather than network segmentation.
* NAC (Network Access Control): Controls access to the network based on the security posture of devices but does not define security zones.
* Implementation Steps:
* Define ACL rules based on the requirements of each department.
* Apply these rules to the appropriate network interfaces or firewall policies to segment the network into security zones.
NEW QUESTION # 98
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