Most asteroids, which are made of rock, _themselves_ a belt between the orbits of Mars and Jupiter.

A . Tanks for the storage of drinking water B . Ballast tanks to prevent the boat from capsizing C . A hydraulic start diesel engine D . Auxiliary mechanical propulsion (Fleming gear)

A . A based opt-in model uses virtualized identifiers B . A based opt-in model uses hardware values as identifiers C . A logical server opt-in model uses virtualized identifiers D . A logical server opt-in model uses hardware values as identifier

A . ASM B . BiDirPIM C . PIM-SMRP D . RP-Switchover E . SourceSpecificMulticast

A .https://assets.asklib.com/images/image2/2018080211253564940.jpg B .https://assets.asklib.com/images/image2/2018080211254118625.jpg C .https://assets.asklib.com/images/image2/2018080211254518551.jpg D .https://assets.asklib.com/images/image2/2018080211255082831.jpg E .https://assets.asklib.com/images/image2/2018080211255590835.jpg F .https://assets.asklib.com/images/image2/2018080211255925645.jpg

A .  OSPF stub areas can be thought of as a simple form of summarization B .  OSPF cannot filter intra area routes C .  An ARR ran only exist in two areas - the backbone and one adjacent area D .  Performance issues in the Backbone area can be offset by allowing some traffic to transit anon-backbone area E .  the size of an area （the LSDB） will be constrained by the size of the IP MTU

A . Never use passive interfaces. B . Use NSSA areas from the core down. C . Use totally stub areas to stop type 3 LSAs. D . Use the lowest Ethernet interface IP address as the router ID. E . Tune OSPF timers to enable OSPF to achieve quicker convergence.

A . Information about port roles is sent to all switches. B . RSTPs that are based on Cisco products require no additional configuration. C . Features such as UplinkFast and BackboneFast are compatible with RSTP. D . An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.

A . pleting aggressive implementation schedule B . Stateful Switchover C . pany and user expectations D . Nonstop Forwarding E . change control processes F . dual devices and dual link

A . jitter B . delay C . PoE D . bandwidth E . packet lo

A .  The backup RB3 and the current online redo log files B .  the backup RB2 and the archived redo log files after the log sequence number 15622 C .  Backup R81 and the archived redo log hies after the log sequence number 12871 D .  The backup RB3 and the archived redo log files after the log sequence number 16721

A .  Never use passive interfaces. B .  Use NSSA areas from the core down. C .  Use totally stub areas to stop type 3 LSAs. D .  Use the lowest Ethernet interface IP address as the router ID. E .  Tune OSPF timers to enable OSPF to achieve quicker convergence

A .  NICs are used for network connectivity. B .  Servers request specific blocks of data. C .  Storage devices are directly connected to servers. D .  A fabric is used as the hardware for connecting servers to storage devices. E .  The TCO is higher because of the cost of director class storage switches.

A . terminating PPP sessions at the service provider B . PPP framing C . PPP multiplexing D . GRE tunneling E . L2TP tunneling

A . Summarize data center subnets. B . Use passive interfaces to ensure appropriate adjacencies. C . Tune the EIGRP timers to enable EIGRP to achieve quicker convergence. D . Adjust the default bandwidth value to ensure proper bandwidth on all links. E . Advertise a default summary route into the data center core from the aggregation layer.

A .  Summarize data center subnets. B .  Use passive interfaces to ensure appropriate adjacencies. C .  Tune the EIGRP timers to enable EIGRP to achieve quicker convergence. D .  Adjust the default bandwidth value to ensure proper bandwidth on all links. E .  Advertise a default summary route into the data center core from the aggregation layer.

A . A B . B C . C D . D E . E F . F

A . NICs are used for network connectivity. B . Servers request specific blocks of data. C . Storage devices are directly connected to servers. D . A fabric is used as the hardware for connecting servers to storage devices. E . The TCO is higher because of the cost of director class storage switches.

A . function when the rudder is amidships B . relieve excess whip pressure from the hydraulic oil system C . protect the piping assembly from external rudder shock D . relieve excessive telemotor pressure

A . Concept phase B . Development of design phase C . Execution phase. D . Termination phase. E . None of the above

And they travel through a universe so large that one star seldom comes near to another. For the most part each star makes its journey in complete loneliness, like a ship on an empty ocean. The ship will be well over a million miles from its nearest neighbor. From this it is easy to understand why a star seldom finds another anywhere neat it. We believe, however, that some two thousand million years ago, another star wandering (漫游) through space, happened to come near our sun, Just as the sun and the moon raise tides (潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; a large tidal wave must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance (动荡) came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space. These small pieces have been going round the sun ever since. They are the planets (行星). 第47题：Millions of stars are ________. [A] following a regular path in space [B] moving about without a fixed course [C] seldom wandering about in the universe [D] always travelling together

对 错

A、Hundreds of titles are published every year. B、All kinds of people love it. C、Some of the most successful films of recent years have been based on science fiction stories. D、Science fiction can be found in books written hundreds of years ago.

正确 错误