Following the troubleshooting methodology, a technician implements a solution that resolves the reported issue.Which of the following should the technician do next?
Answer(s): A
After implementing a solution that resolves the reported issue, the next step in the troubleshooting methodology is to document the findings. This includes recording the steps taken, the solution implemented, and any relevant details about the issue and its resolution. Proper documentation ensures that future troubleshooting efforts can refer to past solutions and help track recurring problems.
A network administrator needs to divide 192.168.1.0/24 into two equal halves.Which of the following subnet masks should the administrator use?
Answer(s): D
To divide the 192.168.1.0/24 network into two equal halves, the network administrator needs to borrow 1 bit from the host portion of the IP address, which is 8 bits for a /24 subnet. This will create two subnets with 128 usable IP addresses each.255.255.255.128 subnet mask corresponds to a /25 subnet, which splits the 192.168.1.0/24 network into two equal subnets, each with 128 IP addresses (126 usable addresses). This is the correct choice for dividing the network into two equal halves.
Which of the following protocols uses the Dijkstra's Link State Algorithm to establish routes inside its routing table?
OSPF (Open Shortest Path First) uses Dijkstra's Link State Algorithm to calculate the shortest path first (SPF) to each network in its routing table. OSPF is a link-state routing protocol, meaning that it maintains a database of the entire network topology and uses the Dijkstra algorithm to compute the best path.
Which of the following traffic types does a DHCP Discover request from a PC use?
When a PC sends a DHCP Discover request, it uses a broadcast. This is because the PC does not yet have an IP address and therefore cannot send the request to a specific destination IP address. Instead, it broadcasts the DHCP Discover packet to all devices on the local network (to the broadcast address 255.255.255.255) to locate a DHCP server.
A user's VoIP phone and workstation are connected through an inline cable. The user reports that the VoIP phone intermittently reboots, but the workstation is not having any network-related issues.Which of the following is the most likely cause?
The most likely cause of the VoIP phone intermittently rebooting while the workstation does not have any network-related issues is that the PoE (Power over Ethernet) power budget is exceeded. PoE provides both power and data over the same Ethernet cable to devices such as VoIP phones. If the power budget on the switch port that is supplying PoE is exceeded, the VoIP phone might not get enough power to function properly, leading to intermittent reboots.
A network administrator is installing a network for a small company. The switches will be installed in parallel to provide redundancy in case a specific device fails.Which of the following should be configured to prevent loops?
To prevent loops in a network with multiple switches providing redundancy, Spanning Tree Protocol (STP) should be configured. STP is a network protocol used to detect and prevent loops in Ethernet networks.When there are redundant paths between switches, STP ensures that only one active path exists at any given time and blocks the other redundant paths to avoid broadcast storms and network loops.
A company's network is experiencing high latency and packet loss during peak hours. Network monitoring tools show increased traffic on a switch.Which of the following should a network technician implement to reduce the network congestion and improve performance?
To reduce network congestion and improve performance, especially when high latency and packet loss occur during peak hours, load balancing should be implemented. Load balancing helps distribute the traffic more evenly across the network, preventing any single device or link from becoming overloaded. This ensures more efficient use of the available bandwidth and reduces congestion.
Which of the following VPN types provides secure remote access to the network resources through a web portal?
Answer(s): B
A clientless VPN provides secure remote access to network resources via a web portal without requiring the user to install a dedicated VPN client on their device. This type of VPN allows users to access resources by simply using a standard web browser. The web portal handles the authentication and secure access to the internal network.
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