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单选题
The（）provides the link between the Space Segment and the land-based National/International fixed communications networks.
A
VHF
B
SART
C
NAVTEX
D
LES
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单选题Which statement is correct about an OSPF sham-link？（）A
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.B
A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.C
A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.D
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.E
A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
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单选题The author mentions “trousers” in paragraph 1 most likely in order to _____.A
make a comparison between the program target and the program audienceB
emphasize the similarities between the market segment and the program targetC
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clarify the distinction between the market segment and the program target
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A non-IP network and Dial Back Fail Safe provide redundant heartbeats between sites.C
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The Site Notification Daemon maintains a heartbeat between sites via short haul Modems/line drivers and dark fibre.
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单选题You specified segment space management as automatic for a tablespace. What effect would this have on space management？（）A
Extents would be managed by the freelists.B
The segment would be managed by bitmaps.C
The segment would be managed by the freelists.D
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单选题The Testking corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?（）A
The number of broadcast domains will be decreased.B
It will make the broadcasting of traffic between domains more efficient between segments.C
It will increase the number of collisions.D
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