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What are two types of ciphers？加密的两种方式是？（）

题目
单选题
What are two types of ciphers？加密的两种方式是？（）
A

Transposition and Permutation.换位和置换

B

Substitution and Replacement.替代和置换

C

Transposition and Substitution.换位和替代

D

Transposition and Shift.换位和转换

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相似问题和答案

第1题：

There are two types of language in the world: natural language and artificial language.()


参考答案：正确

第2题：

下面算法中，属于非对称密钥加密算法的是__（53）__。

A.DES（Digital Encryption Standard）

B.RC2（Rivest Ciphers 2）

C.RC5（Rivest Ciphers 5）

D.DSA（Digital Signature Algorithm）


正确答案：C
非对称密钥加密算法又称为公开密钥加密算法，常见的有RSA、DSA、D-H算法等。

第3题：

What is antonymy and what are its different types?


参考答案：Antonymy refers to the relationship between two or rarely more words of the same language, belonging to the same part of speech, identical in style. and nearly identical in distribution, associated and used together so that their denotative meanings render contrary or contradictory notions. There are three types of antonymy1) Complementary antonymy refers to the relation between two words that the denial of one member implies the assertion of the other, and vice versa.e.g. male vs. Female; alive vs. dead; boy vs. girl; odd vs. evenThe relation between the members of the pair of complementary antonyms can be best represented in the following diagram: 2) Gradable antonymy refers to the relation between two words that the two words in question are the two extremes between which different degrees of grades can be distinguished. See more examples as the following:good vs. bad; fat vs. skinny; wide vs. narrow; fast vs. slowMany pairs of gradable antonyms contain one marked term and one unmarked, e.g. old/young, heavy/light, fast/slow where the second term is more restricted in distribution than the first. The relation between members of the pair of gradable antonymy can be represented in the following way: 3) Relational antonymy refers to the relation between the two items do not constitute a positive-negative opposition, and the existence of one of the pair presupposes the existence of the other, or one of them cannot be used without suggesting the other. See more examples as the following:e.g. predecessor vs. successor; parent vs. child; teacher vs. student lend vs. borrow; employer vs. employee; buy vs. sell

第4题：

What two are features of the Cisco Unified CallManager Express QCT?（）

  • A、autodetection of Cisco router components 
  • B、automatic download of system parameters from central site 
  • C、standards-based autoconfiguration using SIP and SCCP 
  • D、support for barcode-scanned input of IP-phone MAC addresses and phone types 
  • E、automatic identification of phone types and MAC addresses upon booting the Cisco Unified CallManager Express router

正确答案:A,D

第5题：

What are two types of WebView monitoring statistics on the WX／WXC platforms?() (Choose two.)

A.LAN

B.QoS

C.traffic

D.IPSec


参考答案：B, C

第6题：

加密有( )加密和( )加密两种方式。

A．人工 软件

B．人工 程序

C．软件硬件

D．DBA OS


正确答案：C

第7题：

An RSVP session is maintained with the periodic exchange of which two message types?() (Choose two.)

A.path

B.resv

C.session

D.keepalive


参考答案：A, B

第8题：

RRU拓扑的连接方式有『____』和『____』两种方式。(There are two RRU connection topology:『____』and『____』.)


参考答案：星形组网
链形组网
Chain network
Star network

第9题：

What are the two benefits of any intelligent network that uses a systems-level approach to integrate applications and services across an infrastructure？（）

  • A、 reduce complexity
  • B、 reduced costs for all types of users
  • C、 packet inspection at wire speed
  • D、 QoS to the desktop
  • E、 LAN encryption services

正确答案:A,B

第10题：

What are two benefits of using a single OSPF area network design?（）

  • A、it reduces the number of required OSPF neighbor adjacencies
  • B、It reduces the types of LSAs that are generated
  • C、It is less CPU intensive for routers in the single area
  • D、It increases LSA response times.
  • E、It removes the need for virtual links

正确答案:B,E

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