Most Computer operating systems in use today, including all consumer-targeted systems, include a TCP/IP（）.

A、plan

B、requirement

C、implementation

D、design

ARP协议的功能是（）。

A、由目标的IP地址求目标的MAC地址

B、由目标的MAC地址求目标的IP地址

C、由源的IP地址求源的MAC地址

D、由源的MAC地址求源的IP地址

以下哪个选项的仪器在验收过程中不需携带。（）

A、手提电脑

B、竣工文件

C、卷尺

D、望远镜

Which three statements concerning the use of the java.io.Serializable interface are true？（）

Objects from classes that use aggregation cannot be serialized

An object serialized on one JVM can be successfully deserialized on a different JVM

The values in fields with the volatile modifier will NOT survive serialization and deserialization

The values in fields with the transient modifier will NOT survive serialization and deserialization

It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable

You need to control SSH, HTTP, and Telnet access to an MX240 router through any interface.You have decided to use a firewall filter.How should you apply the firewall filter?（）

A、as an outbound filter on interface fxp0

B、as an outbound filter on interface lo0

C、as an inbound filter on interface fxp0

D、as an inbound filter on interface lo0

有如下类模板定义：已知b1、b2是BigNumber的两个对象，则下列表达式中错误的是（　　）。

A、b1+b2

B、b1+3

C、3+b1

D、3+3