Early in the morning, an administrator installs a new DHCP server. In the afternoon, some users report they are experiencing network outages.Which of the following is the most likely issue?
Answer(s): A
If a new DHCP server is installed and some users are experiencing network outages later, it is most likely that the DHCP server did not have enough IP addresses in its pool to assign to all devices. Once the available IP addresses are exhausted, new devices cannot obtain an IP address, leading to network connectivity issues.
A company is implementing a policy that will not allow employees to bring personal devices to the office and connect to the wireless network.Which of the following is the best way to enforce this policy?
Answer(s): B
802.1X is a network access control protocol that provides authentication to devices trying to connect to the network. By using 802.1X, the company can enforce a policy that requires only authorized devices (such as company-provided devices) to authenticate before being granted access to the network, effectively preventing personal devices from connecting. This is the best way to enforce such a policy because it allows for strong security and authentication at the network access level.Other methods like MAC filtering or ACLs can be bypassed more easily, and port security is generally more applicable to wired networks.
A network engineer is troubleshooting an issue with a VoIP network. After performing analysis, the engineer found that when users upload large files, voice quality is severely degraded.When no other traffic is on the network, voice quality is fine.Which of the following should the engineer do to most likely resolve the issue?
Answer(s): C
Quality of Service (QoS) prioritizes certain types of traffic over others. In this case, configuring QoS on the router would prioritize voice traffic over data traffic (such as large file uploads), ensuring that VoIP calls maintain high quality even when the network is under heavy load. This prevents the voice traffic from being affected by bandwidth-heavy activities like file uploads.
Which of the following disaster recovery metrics is used to describe the amount of data that is lost since the last backup?
RPO refers to the maximum acceptable amount of data loss measured in time. It indicates the point in time to which data must be recovered after a disaster (e.g., how much data can be lost since the last backup). It helps organizations determine how frequently backups should occur to meet their disaster recovery goals.
A network administrator needs to improve network monitoring.Which of the following should the administrator do first?
Before improving network monitoring, it is important to establish baseline metrics. This involves measuring the normal performance and behavior of the network, such as bandwidth usage, latency, packet loss, and other key indicators. Having a baseline allows the administrator to detect anomalies, identify performance issues, and measure the impact of any changes made to the network.
A network administrator is troubleshooting issues with a DHCP server at a university. More students have recently arrived on campus, and the users are unable to obtain an IP address.Which of the following should the administrator do to address the issue?
When more students have arrived and users are unable to obtain an IP address, it typically means the DHCP server's available pool of IP addresses has been exhausted. Increasing the scope size on the DHCP server will expand the range of available IP addresses, allowing more devices to obtain an IP address and connect to the network.
Which of the following is designed to distribute network traffic among devices based on the quantity of traffic?
A load balancer is designed to distribute network traffic among multiple devices (such as servers) based on factors like the quantity of traffic or server load. This helps ensure efficient use of resources, prevents any one device from being overwhelmed, and improves the overall performance and reliability of the network.
A user recently moved a workstation to a different part of the office. The user is able to access the internet and print but is unable to access server resources.Which of the following is the most likely cause of the issue?
If the user can access the internet and print but is unable to access server resources, the most likely issue is that the workstation is assigned to the wrong VLAN. VLANs are used to segment network traffic, and if the workstation is in a different VLAN than the servers, it won't be able to access those resources unless proper routing is configured between the VLANs.
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