- (Topic 3)
A technician is troubleshooting airport about network connectivity issues on a workstation. Upon investigation, the technician notes the workstation is showing an APIPA address on the network interface. The technician verifies that the VLAN assignment is correct and that the network interface has connectivity. Which of the following is most likely the issue the workstation is experiencing?
Correct Answer:
A
DHCP exhaustion is a situation where the DHCP server runs out of available IP addresses to assign to clients. This can happen due to misconfiguration, malicious attacks, or high demand. When a client requests an IP address from the DHCP server and does not receive a response, it may resort to using an APIPA address, which is a self-assigned address in the range of 169.254.0.1 to 169.254.255.254. APIPA addresses are only valid for local communication and cannot access the internet or other networks. Therefore, a workstation showing an APIPA address indicates that it failed to obtain a valid IP address from the DHCP server, most likely due to DHCP exhaustion
- (Topic 3)
Which of the following should be implemented to allow remote users to access network resources while only redirecting necessary traffic?
Correct Answer:
A
A split-tunnel VPN is a VPN feature that allows remote users to access network resources while only redirecting necessary traffic through the VPN tunnel. A split-tunnel VPN enables users to choose which applications or websites to secure with the VPN and which to connect normally through the internet. This can improve performance, conserve bandwidth, and avoid compatibility issues with some services that depend on the user’s location. A split-tunnel VPN can also allow users to access local devices or resources that are not accessible through the VPN.
SIMULATION - (Topic 3)
A network technician needs to resolve some issues with a customer's SOHO network.
The customer reports that some of the devices are not connecting to the network, while others appear to work as intended.
INSTRUCTIONS
Troubleshoot all the network components and review the cable test results by Clicking on each device and cable.
Diagnose the appropriate component(s) by identifying any components with a problem and recommend a solution to correct each problem.
Cable Test Results:
Cable 1:
Cable 2:
Cable 3:
Cable 4:
Solution:
(Note: Ips will be change on each simulation task, so we have given example answer for
the understanding)
To troubleshoot all the network components and review the cable test results, you can use the following steps:
✑ Click on each device and cable to open its information window.
✑ Review the information and identify any problems or errors that may affect the network connectivity or performance.
✑ Diagnose the appropriate component(s) by identifying any components with a problem and recommend a solution to correct each problem.
✑ Fill in the remediation form using the drop-down menus provided. Here is an example of how to fill in the remediation form for PC1:
✑ The component with a problem is PC1.
✑ The problem is Incorrect IP address.
✑ The solution is Change the IP address to 192.168.1.10.
You can use the same steps to fill in the remediation form for other components.
To enter commands in each device, you can use the following steps:
✑ Click on the device to open its terminal window.
✑ Enter the command ipconfig /all to display the IP configuration of the device, including its IP address, subnet mask, default gateway, and DNS servers.
✑ Enter the command ping
✑ Enter the command tracert
latency of packets from the device to another device on the network by sending and receiving packets with increasing TTL values. Replace
Here is an example of how to enter commands in PC1:
✑ Click on PC1 to open its terminal window.
✑ Enter the command ipconfig /all to display the IP configuration of PC1. You should see that PC1 has an incorrect IP address of 192.168.2.10, which belongs to VLAN
2 instead of VLAN 1.
✑ Enter the command ping 192.168.1.1 to test the connectivity to Core Switch 1. You should see that PC1 is unable to ping Core Switch 1 because they are on different subnets.
✑ Enter the command tracert 192.168.1.1 to trace the route to Core Switch 1. You should see that PC1 is unable to reach Core Switch 1 because there is no route between them.
You can use the same steps to enter commands in other devices, such as PC3, PC4, PC5, and Server 1.
Does this meet the goal?
Correct Answer:
A
- (Topic 1)
A fiber link connecting two campus networks is broken. Which of the following tools should an engineer use to detect the exact break point of the fiber link?
Correct Answer:
A
To detect the exact break point of a fiber link, an engineer should use an OTDR (Optical Time Domain Reflectometer). This device sends a series of pulses into the fiber, measuring the time it takes for the pulses to reflect back, and can pinpoint the exact location of the break.
References:
✑ Network+ N10-007 Certification Exam Objectives, Objective 2.5: Given a scenario, troubleshoot copper cable issues.
✑ FS: OTDR (Optical Time Domain Reflectometer) Testing Principle and Applications
- (Topic 1)
Which of the following routing protocols is used to exchange route information between public autonomous systems?
Correct Answer:
B
BGP (Border Gateway Protocol) is a routing protocol used to exchange route information between public autonomous systems (AS). OSPF (Open Shortest Path First), EGRIP (Enhanced Interior Gateway Routing Protocol), and RIP (Routing Information Protocol) are all used for internal routing within a single AS. Therefore, BGP is the correct option to choose for this question.
References:
✑ Network+ N10-007 Certification Exam Objectives, Objective 3.3: Given a scenario, configure and apply the appropriate routing protocol.
✑ Cisco: Border Gateway Protocol (BGP) Overview