1. interface A { public void aMethod（）； } 2. interface B { public void bMethod（）； } 3. interface C extends A，B { public void cMethod（）； } 4. class D implements B { 5. public void bMethod（） { } 6. } 7. class E extends D implements C { 8. public voi

题目

1. interface A { public void aMethod（）； } 2. interface B { public void bMethod（）； } 3. interface C extends A，B { public void cMethod（）； } 4. class D implements B { 5. public void bMethod（） { } 6. } 7. class E extends D implements C { 8. public void aMethod（） { } 9. public void bMethod（） { } 10. public void cMethod（） { } 11. } What is the result？（）

A、 Compilation fails because of an error in line 3.
B、 Compilation fails because of an error in line 7.
C、 Compilation fails because of an error in line 9.
D、 If you define D e = new E（）， then e.bMethod（） invokes the version of bMethod（）defined in Line 5.
E、 If you define D e = （D）（new E（）），then e.bMethod（） invokes the version of bMethod（） defined in Line 5.
F、 If you define D e = （D）（new E（））， then e.bMethod（） invokes the version of bMethod（） defined in Line 9.

参考答案和解析

正确答案:F

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相似问题和答案

第1题：

Which command shows if an access list is assigned to an interface?()

A. show ip interface [interface] access-lists

B. show ip access-lists interface [interface]

C. show ip interface [interface]

D. show ip access-lists [interface]

参考答案：C

第2题：

Whichcommandshowsif an accesslistisassignedtoaninterface?()

A.show ip interface [interface] access-lists

B.show ip access-lists interface [interface]

C.show ip interface [interface]

D.show ip access-lists [interface]

参考答案：C

第3题：

指定同/异步串口1和2的备份优先级分别为10和20的配置为()

A.backup interface 1 10; backup interface 2 20

B.backup interface serial 1 10; backup interface serial 2 20

C.backup interface 1 priority 10; backup interface 2 priority 20

D.backup interface serial 1 priority 10; backup interface serial 2 priority 20

正确答案：D

第4题：

In a chassis cluster with two SRX 5800 devices， the interface ge-13/0/0 belongs to which device？（）

A、This interface is a system-created interface.
B、This interface belongs to node 0 of the cluster.
C、This interface belongs to node 1 of the cluster.
D、This interface will not exist because SRX 5800 devices have only 12 slots.

正确答案:C

第5题：

What interface is created when an FC Port Channel is created on a Cisco Unified Computing System？（）

A、 An interface ’san-port-channel’ in NXOS
B、 An interface ’port-channel’ in NXOS
C、 An interface ’port-channel’ with ’mode fc’ configured
D、 An interface ’fc-port-channel’ in NXOS

正确答案:A

第6题：

A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?()

A.the port-channel 1 interface

B.the highest number member interface

C.all member interfaces

D.the lowest number member interface

参考答案：A

第7题：

Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to an interface（）

A、The interface must be configured as a Multilink PPP interface.
B、The correct bandwidth should be configured on the interface.
C、A QoS policy must not be currently attached to the interface.
D、CEF must be enable
E、AutoQoS must be enabled globally before it can be enabled on the interface.
F、An IP address must be configured on the interface if its speed is equal to or less than 768 kbps.

正确答案:A,E

第8题：

Which command allows you to decode packets in JUNOS?()

A.debug packet interface-name

B.show interface extensive

C.traceoptions interface-name

D.monitor traffic interface interface-name

参考答案：D

第9题：

public interface A { String DEFAULT_GREETING = “Hello World”； public void method1（）； } A programmer wants to create an interface called B that has A as its parent. Which interface declaration is correct？（）

A、 public interface B extends A {}
B、 public interface B implements A {}
C、 public interface B instanceOf A {}
D、 public interface B inheritsFrom A {}

正确答案:A

第10题：

Which command allows you to view interface usage details in real-time?（）

A、user@host> debug interface interface-name
B、user@host> monitor usage interface-name
C、user@host> monitor interface interface-name
D、user@host> traceoptions interface interface-name

正确答案:C

1. interface A {

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