60 seconds
5 minutes
15 minutes
30 minutes
第1题：
A. 60 seconds
B. 5 minutes
C. 15 minutes
D. 30 minutes
第2题：
A.A
B.B
C.C
D.D
第3题：
A. Column definitions cannot be altered to add DEFAULT values.
B. A change to the DEFAULT value affects only subsequent insertions to the table.
C. Column definitions cannot be altered at add DEFAULT values for columns with a NUMBER data type.
D. All the rows that have a NULL value for the SALARY column will be updated with the value 5000.
第4题：
What is the default value of the SPT threshold in Cisco routers？（）
第5题：
A. 0
B. 1
C. 2
D. 4
E. 16
F. infinity
第6题：
A.1
B.10
C.100
D.10^8/link bandwidth
第7题：
Refer to the exhibit. A company would prefer all Internet - bound OSPF routed traffic to use ISP ABC with ISP DEF as a backup. As the network consultant, what three configuration changes might you make?（）
A. The default -information originate command should be configured on router B1 and B4.
B. The default -information originate command should be configured on router B2 and B3.
C. If the metric value for ISP ABC is set at the default, the I SP DEF metric value should be set to 1.
D. If the metric value for ISP ABC is set at the default, the ISP DEF metric value should be set to 25.
E. The metric type value should be set to type 1.
F. The metric type value should be set to type 2.
第8题：
A. 900 seconds
B. 1200 seconds
C. 3000 seconds
D. 65535 seconds
第9题：
If no metric is specified for the routes being redistributed into IS-IS， what metric value is assigned to the routes？（）
第10题：
What is the default route preference value for EBGP?（）