The frequency hopping technique is employed by wireless gadgets to keep their signal from being detected or interfered with by other nearby radios. It works by quickly switching between multiple channels in order to reduce interference while also making it harder for outside parties to track transmissions . Spread spectrum modulation is another way for wireless devices to increase their reliability when communicating with each other. It does this by using an ultra wideband signal that occupies a larger portion of the radio spectrum which in turn reduces chances of two signals clashing . This means data can be sent without fear of disruption from other sources . Direct Sequence Modulation (DSM) is also utilized by many wireless devices although it differs from above mentioned techniques since DSM transmits large chunks off data all at once instead off small fragments throughout different frequencies - thus leading faster data transmission rates Finally , when setting up home or office networks - administrators should ensure they employ WPA/WPA2 security protocols so all traffic remains encrypted thus preventing any malicious outside actors accessing confidential information stored within network. In conclusion – modern day wireless gadgets must utilize range off different technologies if they wish maximize efficiency while sending receiving data via airwaves meanwhile – its also essential employ proper security measures before connecting up any kind network lest hackers gain access private information belonging users connected

Sample Solution

Wireless devices such as Wi-Fi enabled laptops and mobile phones rely on a variety of technologies to make the most efficient use of available radio frequencies. This includes techniques such as frequency hopping, spread spectrum modulation, and direct sequence modulation. Additionally, there are various methods used to secure 802.11 wireless networks such as Wi-Fi Protected Access (WPA) and WPA2 encryption protocols.