2 Network Infrastructure and Connectivity Free Online FlashCards

Which IEEE standard defines Ethernet?

Ethernet is a common wired LAN technology defined by IEEE 802.3.

How does a switch learn which port reaches a MAC address?

It examines the source MAC address of incoming frames to learn which addresses are reachable through each port.

What does a switch do with a frame whose destination MAC is unknown?

A switch floods an unknown-destination unicast frame to eligible ports in the same VLAN, except the port where it arrived.

What does full-duplex Ethernet allow?

Modern switched Ethernet links normally operate full duplex, allowing simultaneous transmission and reception.

What separates devices into distinct Layer 2 broadcast domains?

A VLAN creates a separate logical Layer 2 broadcast domain. Communication between VLANs requires a Layer 3 device.

How do an access port and a trunk port differ?

An access port typically carries one VLAN and connects to an endpoint; a trunk carries multiple VLANs between network devices.

What does 802.1Q tagging identify on a trunk?

802.1Q tags identify the VLAN associated with frames carried on a trunk.

Which standard and bands are associated with Wi-Fi 6?

Wi-Fi 6 uses 802.11ax and operates in the 2.4 GHz and 5 GHz bands.

What does Wi-Fi 6E add to Wi-Fi 6?

Wi-Fi 6E extends Wi-Fi 6 operation into the 6 GHz band where permitted.

What are an access point and an SSID?

A wireless access point bridges wireless clients to the wired network. The SSID is the network name users select.

What is the common maximum planning length for a twisted-pair Ethernet channel?

A common planning guideline limits a twisted-pair Ethernet channel to 100 m (328 ft).

What can compliant Cat 6A support over 100 m?

Cat 6A supports 10GBASE-T to 100 m when the complete channel meets applicable requirements.