2 Core 1: Networking Online Quiz Questions

A workstation needs to send traffic to a device on a different IP network. Which device forwards that traffic between the networks?

True or false: Hiding a Wi-Fi network's SSID is an adequate substitute for using wireless encryption.

What is the common port number for SSH, the protocol used for encrypted remote command-line access?

A client is configured to obtain network settings automatically. Select all settings that DHCP commonly leases to it.

A computer has working IP connectivity, but a technician wants to test whether a host name resolves to an IP address. Which Windows command is most directly suited to that test?

True or false: If a ping to a device fails, that proves the device is unreachable by every network service.

Users in a crowded office report poor Wi-Fi performance. Select all relevant checks or tools that could help identify likely causes.

A device has an incorrect IP address, while its physical link is working. Which OSI layer is most directly associated with this configuration problem?

Which cable type is resistant to electromagnetic interference because it carries light?

A compatible access point needs power over Ethernet, and the installed switch does not provide it. Which device can be added to supply that power?

A small business assumes that enabling NAT on its router is enough to control unwanted network traffic. Explain what NAT does, why it is not a complete security control by itself, and what feature applies rules to permit or block traffic.

A building has a wired LAN and needs a device that lets Wi-Fi clients join that LAN without replacing its router. Which device directly provides that function?

A workstation loses its network connection because its Ethernet cable is damaged. Which OSI layer is most directly implicated?

A firewall rule must permit standard NTP time-synchronization traffic. What UDP destination port is commonly used?

A Windows computer is configured for DHCP and needs to request its network settings again. Enter the full command to renew its DHCP settings.

True or false: If a ping to a remote host fails, that alone proves the host is unreachable.

A customer’s ISP connection arrives over fiber. Which device commonly connects the customer network to that ISP service?

A company separates two departments into different VLANs. What is needed for devices in those VLANs to communicate with each other?