ITPEC IP April 2018 Question 34

Topic: NetworksAlso asked in November 2021

Which of the following is an appropriate explanation of SSID that is used in wireless LANs?

a)The MAC address of an access pointb)The channel number of radio waves in usec)The IP address of an access point that is used as the default gatewayd)A character string used to identify the wireless network

Explanation

A character string that identifies the wireless network — the SSID is the network name.

An access point announces its SSID (Service Set Identifier), up to 32 characters. A PC or smartphone lists the SSIDs in range, and the user picks one to join that wireless LAN.

Answer (d)

Why not others:

•(a) — the access point's MAC address is a hardware address, used as the BSSID, not the SSID
•(b) — the channel is the radio frequency band in use, set separately from the network name
•(c) — the default gateway's IP address is a network-layer setting, often handed out by DHCP

Key rule: The SSID names the wireless network; the MAC address, channel and IP address are separate settings.

Networks · AI-written, may contain errors

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