思科认证考试
To protect against first-hop router failure， four protocols were developed to ensure IP routing redundancy. Which of the following are they？（）A、 HSRPB、 IRDPC、 ICMPD、 VRRPE、 MSTPF、 GLBP
题目
To protect against first-hop router failure， four protocols were developed to ensure IP routing redundancy. Which of the following are they？（）
- A、 HSRP
- B、 IRDP
- C、 ICMP
- D、 VRRP
- E、 MSTP
- F、 GLBP
参考答案和解析
相似问题和答案
第1题：
A great deal has been done to remedy the situation.
A．maintain
B．improve
C．assess
D．protect
解析：本题考查的是对名词的认知。这句话的意思是：为改进状况做了大量工作。本题中及物动词remedy意思为改正、改进。选项中A．maintain保持；C．assess评估；D．protect保护。B．improve意思最相近，亦表改进。例如：Herbal medicine can be used to improve our health．草药可用于增进我们的健康。
第2题：
50________.
A.keep
B.make
C.let
D.protect
第3题：
How do you plan to distribute the securities?
A.Some protect actresses, some work outside the cinema
B.Some protect actors and actresses, some guard dressing rooms and others work outside the theatre
C.Some protect actors and actresses, some guide audience and others work outside the theatre
D.Some guard dressing rooms, some protect super stars and others work outside the stadium.
第4题：
A.to
B.beyound
C.near
D.from
第5题：
We should pay attention________(protect) the environment.
第6题：
Turtles bury their eggs ______.
A. to keep them cool
B. to protect them from danger
C. because of deep instinct
D. to protect them from the weather
第四段。海龟把蛋下在深深的沙子里，埋好。以防它们受到伤害。
第7题：
He __ of a city is the fight to protect it from those who attack it
A、command
B、capture
C、destroy
D、defense
第8题：
Don’t you think ___ important to protect our earth?
A. that
B. how
C. it
D. this
第9题：
Before you leave for the weekend please ( ) the door.
A、secure
B、save
C、guard
D、protect
解析：secure：确信：使肯定;确保因为是离开，因此不可能guard, protect
第10题：
下表正确的是
在父类中的访问属性 访问修饰符 在子类中的访问属性
A． public private 不能直接访
B． protect public public
C． private public 不能直接访问
D． protect private protect
解析：基类的私有成员在派生类中是隐藏的，只能在基类内部访问，派生类中的成员不能访问基类中的私有成员，可以访问基类中的公有和受保护的成员。