Which of the following is the step that a troubleshooter should take immediately after implementing a solution?
Answer(s): C
After implementing a solution, the next immediate step is to verify full system functionality. This involves testing the system to ensure that the solution has resolved the issue and that all components are working as expected. This step ensures that the solution has addressed the problem effectively before moving on to documenting actions or reviewing lessons learned.
Users can 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?
If users are unable to connect to the terminal server using the IP address 10.0.100.19 and receive an "unreachable" error when pinging it, the most likely cause is that the IP address was not reserved in the DHCP server.When an IP address is not reserved, it is possible that the address was assigned to another device, causing the terminal server's IP address to change without proper communication or update to the users.To resolve this issue, the technician should ensure that the IP address 10.0.100.19 is reserved in the DHCP server or manually configure a static IP on the terminal server.
Which of the following is the OSI model layer that uses a connectionless protocol for packet delivery?
Answer(s): B
The Network layer (Layer 3) of the OSI model uses a connectionless protocol for packet delivery. The most common protocol at this layer is IP (Internet Protocol), which is connectionless. It sends packets without establishing a dedicated connection between the sender and receiver, meaning there is no guaranteed delivery or error recovery at this layer - those responsibilities are handled by higher layers, such as the Transport layer.
A company experiences an incident involving a user who connects an unmanaged switch to the network.Which of the following technologies should the company implement to help avoid similar incidents without conducting an asset inventory?
Answer(s): D
Port security is a feature available on most managed switches that allows network administrators to control which devices can connect to each switch port. By enabling port security, the company can restrict access to the network based on MAC addresses, and it can prevent unauthorized devices (such as an unmanaged switch) from connecting. This provides a way to secure the network without needing to maintain a full asset inventory. Port security can also limit the number of MAC addresses that can be learned on a port, which helps prevent network issues caused by unauthorized devices.
Which of the following are benefits of implementing MFA and SSO in an enterprise environment? (Choose two.)
Answer(s): B,C
Centralizing user account management activities: SSO (Single Sign-On) allows users to authenticate once and access multiple applications, which centralizes and simplifies user account management for administrators.This reduces the complexity of managing multiple credentials for different systems.Adding an extra layer of security against compromised credentials: MFA (Multi-Factor Authentication) requires users to provide multiple forms of verification (e.g., something they know, something they have, or something they are). This adds an additional layer of security, making it harder for attackers to gain unauthorized access even if credentials are compromised.
Users report connectivity issues after a network switch is replaced. There are three separate subnets for users, voice, and servers. The users cannot reach the resources in the server subnet. Upon investigation, a separate voice switch has thousands of discarded packets, but no users report issues making or receiving calls.Which of the following is most likely the issue?
Since users cannot reach resources in the server subnet and this occurred after a switch replacement, a VLAN misconfiguration is the most likely cause. This could mean the new switch is not properly configured to allow traffic between VLANs for users and servers. The discarded packets on the voice switch may be due to misrouted traffic or tagging issues, though voice calls are unaffected, suggesting QoS is working, but unnecessary traffic is being dropped.
A network administrator needs to deploy a subnet using an IP address range that can support at least 260 devices with the fewest wasted addresses.Which of the following subnets should the administrator use?
A /23 subnet provides 512 total addresses and 510 usable host addresses, which is the smallest subnet listed that can support at least 260 devices. A /24 supports only 254 usable hosts, while /22 and /21 are larger than necessary and waste more addresses.
Which of the following will allow secure, remote access to internal applications?
Answer(s): A
A VPN (Virtual Private Network) provides secure remote access to internal applications by encrypting the user's internet traffic, allowing them to connect to the internal network securely over the internet. This ensures that sensitive data remains protected as it travels between the user's device and the internal resources. VPNs are commonly used for remote work, ensuring secure access to resources like applications and files within the organization's network.
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