Exam 5: Topics on Wireless Sensor Networks and Network Access Protocols

Within the coverage range, communication is done by__________

In pure ALOHA, the vulnerable time is ______ the frame transmission time.

Following characteristics of wireless sensor networks point to the need for a specialized MAC protocol

Which multiple access technique is used by iEEE 802.11 standard for wireless LAN?

In __________, each station is forced to send only at the beginning of the time slot.

In the S-MAC protocol, ___________is designed to reduce energy consumption during the long idle time when no sensing events happen, by turning off the radio periodically

A central problem for WSN is to dynamically define and form sensor groups based on__________

____________ assigns a unique number to each IP network adapter called the MAC address.

It may be more economical to use a smaller transmission radius for nodes in areas of high node density, w/o sacrificing adequate network connectivity. This is the issue of___________

The main goal of the ___________is to reduce energy waste caused by idle listening, collisions, overhearing and control overhead

As the number of nodes___________, every node spends almost all of its time forwarding packets of other nodes

The S-MAC protocol includes following major components

In ________ each station sends a frame whenever it has a frame to send.

Examples of data attributes may include

This describes how the Ethernet protocol regulates communication among connection points.

___________sub-layer manages access to the physical network medium, and its fundamental goal is to reduce or avoid packet collisions in the medium

Networking allows geographical distribution of the sensor nodes and their placement close to signal sources

802.11 wireless networking uses what method as the media access method?

Following MAC protocols have been developed for wireless voice and data communication networks

In which network access point is not required?