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Certificates are（请作答此空）documents attesting to the （ ） of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to（ ）someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an （ ）date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital（ ）of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.
A.text
B.data]
C.digital
D.structured]
B.data]
C.digital
D.structured]
参考答案
参考解析
解析：证书是一种数字文档，用于表明把一个公钥绑定到一个人或其他实体。用它可以验证一个给定的公钥确实属于某一个人。证书可以防止某些人使用假冒的密钥去冒充别人。最简单的证书包含一个公钥和一个名字。通常使用的证书也包含超时日期、发行证书的 CA的名字、一个序列号，以及其他信息。最重要的是，它包含了证书发行者的数字签名。最广泛接受的证书格式是X.509，这样的证书可以被任何服从X.509标准的应用读或写。
更多 “Certificates are（请作答此空）documents attesting to the （ ） of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to（ ）someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an （ ）date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital（ ）of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509. A.text B.data] C.digital D.structured]” 相关考题
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Given:Which two, inserted at line 11, will allow the code to compile?()
A.public class MinMax? {B.public class MinMax? extends Number {C.public class MinMaxN extends Object {D.public class MinMaxN extends Number {E.public class MinMax? extends Object {F.public class MinMaxN extends Integer {
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Given:Which method will complete this class?()
A.public int compareTo(Object o){/*more code here*/}B.public int compareTo(Score other){/*more code here*/}C.public int compare(Score s1,Score s2){/*more code here*/}D.public int compare(Object o1,Object o2){/*more code here*/}
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In a public-key cryptosystem,(71)encrypted with the public key can only be deciphered with the private key from the same(72). Conversely,(71)encrypted with the private key can be decrypted only with the public key. Users can make their public keys(73)available or place them at a key distribution center or others to access. However, the private key must be(74)safe. In public-key systems there's no(75)to find a safe channel for communicating a shared secret key.A．binarytextB．hypertextC．plaintextD．supertext
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Public Key Infrastructure(PKI) service providers offer organizations fully integrated PKI-managed services designed to secure Intranet, Extranet, Virtual Private Network(VPN), and e-commerce applications. PKI solutions can enable a number of security services, including strong authentication and non-repudiation of transactions.eToken enables the users of PKI systems to generate and store(101)and digital certificates inside the token, creating a secure environment and allowing full portability and maximum ease of use. eToken Pro can also perform. sensitive on-chip(102)operations, ensuring that users' keys axe never exposed to the PC environment, eToken eliminates the need to store(103)and keys on a hard disk or browser file, or to transmit them across the Internet/Extranet; assuring peace-of-mind and confidence during online communications.A digital signature is created using the private key of an individual to ensure the Validity of his request. This technology can be used to guarantee(104)of various transactions. The strength of either the authentication level or the digital signature relies on the level of protection offered to the private key. eToken Pro offers the maximum level of security, since it enables the use of the private key for signing and authenticating inside the eToken.The most secure use of authentication involves enclosing at least one certificate with every signed message. The message(105)verifies the certificate using the CA's public key. If the sender's public key is legitimate, the recipient verifies the message's signature. Digital signatures created with a private key are verified with the digital certificate containing the public key.A．private keysB．public keysC．authentication codesD．message digests
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Certificates are(16)documents attesting to the(17)of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to(18)someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a certificate also contains an(19)date, the name of the CA that issued the certificate, a serial number, and perhaps other information. Most importantly, it contains the digital(20)of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.A．textB．dataC．digitalD．structured
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Symmetric, or private-key, encryption is based on a secret key that is shared by both communcating parties. The （ ） party uses the secret key as part of the mathematical operation to encrypt （ ） text to cipher text. The receiving party uses the same secret key to decrypt the cipher text to plain text. Asymmetric, or public-key, encryption uses two different keys for each user: one is a （ ） key known only to this one user; the other is a corresponding public key, which is accessible to anyone. The private and public keys are mathematically related by the encryption algorithm. One key ia used for encyption and the other for decryption, depending on the nature of the communication service being implemented. In addition, public key encryption technoligies allow digital （ ） to be placed on messages. A digital signature uses the senders private key to encrypt some portion of the message. When the message is received, the receiver uses the senders （ ） key tp decipher the digital signature to verify the senders identity.A.host B.terminal C.sending D.receiving A.plain B.cipher C.public D.private A.plain B.cipher C.public D.private A.interpretation B.signatures C.encryption D.decryption A.plain B.cipher C.public D.private
考题
Certificates are（ ）documents attesting to the（ ）of a public key to an individual or other entity.They allow verification of the claim that a given public key does in fact belong to a given individual.Certificates help prevent someone from using a phony key to（ ）someone else.In their simplest form,Certificates contain a public key and a name.As commonly used,a Certificate also contains an（ ）date,the name of the CA that issued the Certificate,a serial number,and perhaps other information.Most importantly,it contains the digital（请作答此空）of the certificate issuer.The most widely accepted format for certificates is X.509,thus,Certificates can be read or written by any application complying with X.509.A.signature
B.mark
C.stamp
D.hypertext
考题
Certificates are（ ）documents attesting to the （ ） of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to（请作答此空）someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an （ ）date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital（ ）of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.
A.impersonate]
B.personate]
C.damage]
D.control
考题
Certificates are（ ）documents attesting to the （ ） of a public key to an individual or other entity. They allow verification of the claim that a given public key does in fact belong to a given individual. Certificates help prevent someone from using a phony key to（ ）someone else. In their simplest form, Certificates contain a public key and a name. As commonly used, a Certificate also contains an （ ）date, the name of the CA that issued the Certificate, a serial number, and perhaps other information. Most importantly, it contains the digital（请作答此空）of the certificate issuer. The most widely accepted format for certificates is X.509, thus, Certificates can be read or written by any application complying with X.509.
A.signature]
B.mark
C.stamp
D.hypertext
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Symmetric, or private-key, encryption is based on a secret key that is shared by both communcating parties. The （ ） party uses the secret key as part of the mathematical operation to encrypt （ ） text to cipher text. The receiving party uses the same secret key to decrypt the cipher text to plain text. Asymmetric, or public-key, encryption uses two different keys for each user: one is a （ ） key known only to this one user; the other is a corresponding public key, which is accessible to anyone. The private and public keys are mathematically related by the encryption algorithm. One key ia used for encyption and the other for decryption, depending on the nature of the communication service being implemented. In addition, public key encryption technoligies allow digital （_______） to be placed on messages. A digital signature uses the sender's private key to encrypt some portion of the message. When the message is received, the receiver uses the sender's （） key tp decipher the digital signature to verify the sender's identity.横线处应选（ ）。
A. interpretation
B.signatures
C. encryption
D.decryption
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Certificates are（71）documents attesting to the（72）of a public key to an individual or other entity.They allow verification of the claim that a given public key does in fact belong to a given individual.Certificates help prevent someone from using a phony key to（73）someone else.In their simplest form,certificates contain a public key and a name.As commonly used,a certificate also contains an（74）date,the name of the CA that issued the certificate,a serial number,and perhaps other information.Most importantly,it contains the digital（75）of the certificate issuer.The most widely accepted format for certificates is X.509,thus,certificates can be read or written by any application complying with X.509.
A.impersonate
B.personate
C.damage
D.control
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All three types of cryptography schemes have unique function mapping to specific.For example,the synunetric key（71）approach is typically used for theencryption of data providmg（72）,whereas asymmetric key cryptography is maidy used in key（73）and noruepudiation,thereby providing confidentiality and authentication.The hash（74）（noncryptic）,on the other hand,does not provide confidentiality but provides messageintegrity,and cryptographic hash algorithms provide message（75）and identity of peers during transport over insecure channels.
请作答72题。A.Conduction
B.confidence
C.confidentiality
D.connection
考题
For a router to obtain a certificate from a CA， what is the first stepof the certificate enrollment process？（）A、 the router generates a certificate request and forwards it tothe CAB、 the router generates an RSA key pairC、 the router sends its public key to the CAD、 the CA sends its public key to the routerE、 the CA verifies the identity of the routerF、 the CA generates a certificate request and forwards it to the router
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Which statement is true about a certificate authority？（）A、An entity responsible for registering the private key encryption used in a PKIB、An agency responsible for granting and revoking public-private key pairsC、A trusted third party responsible for signing the public keys of entities in a PKIbased systemD、A trusted third party responsible for signing the private keys of entities in a PKIbased system
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public class Person { private name； public Person（String name） { this.name = name； } public int hashCode（） { return 420； } } Which is true？（） A、 The time to find the value from HashMap with a Person key depends on the size of the map.B、 Deleting a Person key from a HashMap will delete all map entries for all keys of typePerson.C、 Inserting a second Person object into a HashSet will cause the first Person object to beremoved as a duplicate.D、 The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.
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PKI是（）。A、Private Key InfrastructureB、Public Key InstituteC、Public Key Infrastructure公钥基础设施D、Private Key Institute
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判断某个key是否在字典d中存在，以下做法正确且严谨的是：（）A、’key’ind.keys（）B、d.get（’key’）isnotNoneC、hasattr（d，’key’）D、’key’ind
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Given an ActionEvent， which method allows you to identify the affected Component？（） A、 Public class getClass（）B、 Public Object getSource（）C、 Public Component getSource（）D、 Public Component getTarget（）E、 Public Component getComponent（）F、 Public Component getTargetComponent（）
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public class Key { private long id1； private long 1d2； // class Key methods } A programmer is developing a class Key， that will be used as a key in a standard java.util.HashMap. Which two methods should be overridden to assure that Key works correctly as a key？（）A、 public int hashCode（）B、 public boolean equals（Key k）C、 public int compareTo（Object o）D、 public boolean equals（Object o）E、 public boolean compareTo（Key k）
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Which two statements about the Diffie-Hellman （DH） key exchange process are correct？（）A、In the DH key exchange process， the session key is never passed across the network.B、In the DH key exchange process， the public and private keys are mathematically related using the DH algorithm.C、In the DH key exchange process， the session key is passed across the network to the peer for confirmation.D、In the DH key exchange process， the public and private keys are not mathematically related， ensuring higher security
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PKI的全称是（）。A、Private Key IntrusionB、Public Key IntrusionC、Private Key InfrastructureD、Public Key Infrastructure
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PKI是（）。A、Private Key lnfrastructureB、Public Key lnstituteC、Public Key lnfrastructureD、Private Key lnstitute
考题
单选题Given an ActionEvent， which method allows you to identify the affected Component？（）A
Public class getClass（）B
Public Object getSource（）C
Public Component getSource（）D
Public Component getTarget（）E
Public Component getComponent（）F
Public Component getTargetComponent（）
考题
单选题public class Person { private name； public Person（String name） { this.name = name； } public int hashCode（） { return 420； } } Which is true？（）A
The time to find the value from HashMap with a Person key depends on the size of the map.B
Deleting a Person key from a HashMap will delete all map entries for all keys of typePerson.C
Inserting a second Person object into a HashSet will cause the first Person object to beremoved as a duplicate.D
The time to determine whether a Person object is contained in a HashSet is constant and does NOT depend on the size of the map.
考题
单选题What is the objective of Diffie-Hellman？（）A
used to verify the identity of the peerB
used between the initiator and the responder to establish a basic security policyC
used to establish a symmetric shared key via a public key exchange processD
used for asymmetric public key encryption
考题
单选题For a router to obtain a certificate from a CA， what is the first stepof the certificate enrollment process？（）A
the router generates a certificate request and forwards it tothe CAB
the router generates an RSA key pairC
the router sends its public key to the CAD
the CA sends its public key to the routerE
the CA verifies the identity of the routerF
the CA generates a certificate request and forwards it to the router
考题
多选题Which two statements about the Diffie-Hellman （DH） key exchange process are correct？（）AIn the DH key exchange process， the session key is never passed across the network.BIn the DH key exchange process， the public and private keys are mathematically related using the DH algorithm.CIn the DH key exchange process， the session key is passed across the network to the peer for confirmation.DIn the DH key exchange process， the public and private keys are not mathematically related， ensuring higher security
考题
多选题Which two statements about the Diffie-Hellman (DH) key exchange process are correct? （）(Choose two.)AIn the DH key exchange process, the session key is never passed across the network.BIn the DH key exchange process, the public and private keys are mathematically related using the DH algorithm.CIn the DH key exchange process, the session key is passed across the network to the peer for confirmation.DIn the DH key exchange process, the public and private keys are not mathematically related, ensuring higher security
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