() is not required by bridge-to-bridge communications.
()is a room on or near the bridge provided with the necessary fittings and furniture for the handling and stowage of charts and where the chronometers are placed.
Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D?()
Diesel engine control can be obtained by the bridge ().
A Bridge for Squirrels San Francisco has its cable cars. Seattle has its Space Needle. And, Longview has its squirrel bridge. The bridge, which has attracted international attention, is now a local landmark. The Nutty Narrows Bridge was built in 1963 by a local builder, Amos Peters, to give squirrels a way to cross the busy road without getting flattened by passing cars. The original bridge was built over Olympia Way on the west edge of the library grounds. Before the bridge was built, squirrels had to avoid traffic to and from the Park Plaza office building where office staff put out a nutty feast for the squirrels. Many times, Peters and others who worked in and near Park Plaza witnessed squirrels being run over. One day Peters found a dead squirrel with a nut still in its mouth, and that day's coffee break discussion turned into squirrel safety. The group of businessmen cooked up the squirrel bridge idea and formed a committee to ask the blessing of the City Council (市政会).The Council approved, and Councilwoman Bess LaRiviere jokingly named the bridge "Nutty Narrows". After architects designed the bridge, Amos Peters and Bill Hutch started construction. They built the 60-foot bridge from aluminum and lengths of fire hose (消防水带). It cost 1000. It didn't take long before reports of squirrels using the bridge started. Squirrels were even seen guiding their young and teaching them the ropes. The story was picked up by the media, and Nutty Narrows became known in newspapers all over the world. In 1983, after 20 years of use, Peters took down the worn-out bridge. Repairs were made and crosspieces were replaced. The faded sign was repainted and in July 1983, hundreds of animal lovers attended the completion ceremony of the new bridge. Peters died in 1984 ,and a ten-foot wooden squirrel sculpture was placed near the bridge in memory of its builder and his devotion to the project. What can we learn about Amos Peters?()
Integrated Bridge and Navigation Systems(IBS/INS) provide excellent performance and reliable navigation under all conditions by().
If the root bridge fails, configuration BPDUs will no longer be sent. Which STP timer will have toexpire before the other switches can actively restore connectivity with topology change procedureof STP?()
Bridge-to-bridge communication means()communications between ships from the position from which the ships are normally navigated.
The construction of the new bridge has been()for two weeks because of the bad weather.
When optimizing a standalone point-to-multipoint bridge installation with eight non-root bridges. Which of the following rts threshold and cwmin settings would be correct for the non-root bridges?()