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单选题
Complete information on weather broadcasts throughout the world is contained in（）.
A
Selected Worldwide Marine Weather Broadcasts
B
your local newspaper
C
the Notice to Mariners
D
the daily weather map
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What are some of the advantages of using a router to segment the network? (Choose two.)（）A、Filtering can occur based on Layer 3 information.B、Broadcasts are eliminated.C、Routers generally cost less than switches.D、Broadcasts are not forwarded across the router.E、Adding a router to the network decreases latency.
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What are some of the advantages of using a router to segment the network?（）A、Filtering can occur based on Layer 3 information.B、Broadcasts are eliminated.C、Routers generally cost less than switches.D、Broadcasts are not forwarded across the router.E、Adding a router to the network decreases latency.
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考题
单选题Which statement is true about TCN propagation？（）A
The originator of the TCN immediately floods this information through the network.B
The TCN propagation is a two step process.C
A TCN is generated and sent to the root bridge.D
The root bridge must flood this information throughout the network.
考题
单选题General information on enroute weather and climate is found in（）.A
the Sailing Directions and the Coast PilotB
a weather faxC
the Local Notice to MarinersD
the Light List
考题
单选题Weather information is available from（）.A
Commercial radio broadcastsB
The Coast Guard on scheduled marine information broadcastsC
VHF-FM continuous marine weather broadcasts provided by the National Weather ServiceD
All of the above
考题
多选题The OSPF hello protocol performs which of the following tasks?（）AIt provides dynamic neighbor discoveryBIt detects unreachable neighbors in 90 second intervalsCIt maintains neighbor relationshipsDIt negotiates correctness parameters between neighboring interfacesEIt uses timers to elect the router witch the fastest links as the designated routerFIt broadcasts hello packets throughout the internetwork to discover all routers that are running OSPF
考题
单选题How does a switch respond when it receives a message?（）A
It reads the Layer-5 information and sends the message directly to the intended computer.B
It reads the Media Access Control (MAC) address and broadcasts the message to all the computers that are connected to the switch.C
It reads the Media Access Control (MAC) address and sends the message directly to the intended computer.D
It reads the Layer-5 information and broadcasts the message to all the computers that are connected to the switch.
考题
多选题Which of the following are benefits of segmenting a network with a router?（）ABroadcasts are not forwarded across the router.BAll broadcasts are completely eliminated.CAdding a router to the network decreases latency.DFiltering can occur based on Layer 3 information.ERouters are more efficient than switches and will process the data more quickly.FNone of the above.
考题
单选题The Daily Memorandum contains information on（）.A
active weather disturbances such as hurricanes or tropical stormsB
the latest navigational warningsC
scheduled vessel arrivals and departures for a 24-hour periodD
water levels at river ports where run-off affects tidal heights
考题
单选题Which publication should you check for complete information on Puget Sound weather conditions? （）A
Sailing DirectionsB
Light ListC
Coast PilotD
Chart of the area
考题
单选题The mariner must be the final judge of the reliance he can place on the information given in the Admiralty charts and other publications,since they（）.A
may always be complete and up-to-dateB
may not always be complete and up-to-dateC
may sometimes be complete and up-to-dateD
may not sometimes be complete and up-to-date
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