禁用约束时出现下列错误:ORA-02297:cannot disable constraint-dependencies exist。这个错误是由于禁止下列哪个约束造成的?()
第1题:
There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A‘s DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80.Which statement is true?()
A. Router A remains the DIS and generates a new pseudonode LSP for that LAN
B. Router A remains the DIS and NO new pseudonode LSP is generated for that LAN
C. Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
D. Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A
第2题:
CSS 主要用下列哪个HTML标记构建页面布局?( )
A.<dir>
B.<div>
C.<dif>
D.<dis>
第3题:
第4题:
以下关于DIS选举规则描述正确的是()。
第5题:
ISIS协议中,如果有优先级更高的路由器出现,DIS会重新选举。
第6题:
由于用户电脑网卡被禁用或网卡故障,宽带拨号会出现错误代码()
第7题:
下列哪条命令是属于查看单AP下的连接用户数假设AP-name为H3C?()
第8题:
How often are IS-IS Hello packets transmitted?()
第9题:
JIS、OC、DIS、7KSR
OC、JIS、DIS、7KSR
7KSR、DIS、JIS、OC
D、DIS、JIS、O7KSR
第10题:
Router A remains the DIS and generates a new pseudonode LSP for that LAN
Router A remains the DIS and NO new pseudonode LSP is generated for that LAN
Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A
第11题:
定义了惟一码约束的字段不能有重复值
惟一码约束只能在表级定义
可以使用一个字段作为惟一码约束
定义惟一码约束的字段,可能出现空值
第12题:
网卡没有插好
上次程序非正常关闭
网卡的端口被禁用
帐号/密码错误
第13题:
A. 3 seconds for DIS; 9 seconds for non-DIS
B. 9 seconds for DIS; 3 seconds for non-DIS
C. 10 seconds for DIS; 3 seconds for non-DIS
D. 10 seconds for all routers
第14题:
患者出现躁动时,下列哪项是错误的
A.宜应用谷氨酸钠
B.防止舌咬伤
C.保持呼吸道通畅
D.禁用吗啡类药物
E.肥皂水灌肠
第15题:
用户拨号时出现提示“错误678’’的原因是()。
第16题:
如果草图在约束过程中出现了粉红色表示?()
第17题:
草绘过程中显示约束时,右键单击禁用约束,按SHIFT键同时右键单击锁定约束,使用TAB键切换激活的约束。
第18题:
NE80E查看当前视图下配置的命令是:()
第19题:
使用掌中宽带时,提示“端口打开错误,请检查端口”,则以下哪项不可能是出现错误的原因()
第20题:
下列对于惟一码约束,说法错误的是()。
第21题:
检查约束
非NULL约束
外键约束
惟一约束
第22题:
A priority of 0 will prevent a router from becoming a DIS.
If the DIS becomes unavailable the backup DIS is promoted to DIS.
Adding a router with a higher priority than the current DIS will result in the new router becoming DIS.
Separate L1 and L2 election processes are held on a brodcast network.
L1 routers on a broadcast network only establish adjacencies with the DIS.
If there is a tie based on priority,the router whose attached interface has the lowest MAC address becomes the DIS.
第23题:
对
错