are tracked on reciprocal bearings
are tracked at the same range
are tracked on the same bearing
pass closely to each other
第1题：
A.Security increases because only the network administrator may change the routing tables
B.Configuration complexity decreases as network size increases
C.Routing updates are automatically sent to neighbors
D.Route summarization is compued automatically by the router
E.Routing traffic load is reduced when used in stub network links
F.An efficient algorithm is used to build routing tables,using automatic updates
G.Routing tables adapt automatically to topology changes.
第2题：
Your ARPA has two guard zones．What is the purpose of the inner guard zone ________．
A.Alert the watch officer that a vessel is approaching the preset CPA limit
B.Warn of small targets that are initially detected closer than the outer guard zone
C.Guard against target loss during critical maneuvering situations
D.Sound an alarm for targets first detected within the zone
第3题：
A. Multiple change tracking files can be created for a database.
B. The change tracking file must be created after the first level 0 backup.
C. RMAN does not support backup and recovery of the change tracking file.
D. The database clears the change tracking file and starts tracking changes again, after whole database restore and recovery operations.
第4题：
Which two statements regarding the Wireless LAN Solution Engine （WLSE） are true？（）
第5题：
Language and thought may be viewed as two independent circles overlapping in some parts. When language and thought are identical or closely parallel to each other， we may regard thought as “subvocal speech，” and speech as “（）”.
Avocal thought
Bsubvocal thought
Ccovert thought
Dovert thought
第6题：
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with ______．
A.one target
B.two targets
C.three targets
D.a large number of targets
第7题：
______20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions(捕获) are possible．
A.As many as
B.So many as
C.As much as
D.As more as
第8题：
A. The ORA_ARCHIVE_STATE column visibility is controlled by the ROW ARCHIVAL VISIBILITY session parameter.
B. The ORA_ARCHIVE_STATE column is updated manually or by a program that could reference activity tracking columns, to indicate that a row is no longer considered active.
C. The ROW ARCHIVAL VISIBILITY session parameter defaults to active rows only.
D. The ORA_ARCHIVE_STATE column is visible if referenced in the select list of a query.
E. The ORA_ARCHIVE_STATE column is updated automatically by the Oracle Server based on activity tracking columns, to Indicate that a row is no longer considered active.
第9题：
Which two statements regarding the Wireless LAN Solution Engine （WLSE） are true？ （）
第10题：
Which two are advantages of static routing when compared to dynamic routing？（）