What is the main concern of man on the fourth level?
A. The more goods the better.
B. The more "luxury" items the better.
C. The more mental satisfaction the better.
D. The more earnings the better.
第1题:
A.Level1
B.Level0
C.Level2
D.Level3
第2题:
A. Level 1 internal routes
B. Level 1 external routes
C. Level 2 internal routes
D. Level 2 external routes
第3题:
A.Level-1
B.Level-2
C.Level-3
D.Level-1-2
第4题:
A. Level 1 only routers see routes contained in their area.
B. Level 1 routers route towards Level 2 routers due to the attached bit.
C. Level 2 routers route towards Level 1 routers due to the attached bit.
D. Level 2 routers can see routes in other Level 2 areas and routes originated in Level 1 areas.
第5题:
A. Level 2 - 3
B. Level 1 - 2
C. Level 2
D. Level 0
E. Level 3
F. Level 1
第6题: