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判断题
Usually low key is used for emphasis and contrast; mid key indicates an expected, neutral attitude; and low key provides low information.（）
A
对
B
错
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更多 “判断题Usually low key is used for emphasis and contrast; mid key indicates an expected, neutral attitude; and low key provides low information.（）A 对B 错” 相关考题
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● The computer you are using is protected usually by (75) .A. password B. key C. mouse D. USB
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下列程序段实现的是顺序查找功能()intSearch(intarray[],intn,intkey){inti;array[n]=key;for(i=0;key!=array[i];i＋＋);return(in?i:－1);}。()
此题为判断题(对，错)。
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(b) The CEO of Oceania National Airways (ONA) has already strongly rejected the re-positioning of ONA as a ‘nofrills’ low-cost budget airline.(i) Explain the key features of a ‘no frills’ low-cost strategy. (4 marks)
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阅读下列算法说明和算法，将应填入(n)处的语句写在对应栏内。【说明】为了减少直接插入排序关键字的比较次数，本算法使用了二分(折半)插入法对一个无序数组R[1..n]进行排序。排序思想是对一个待插入元素，先通过二分法(折半)找到插入位置，后移元素后将该元素插入到恰当位置。(假设R[]中的元素互不相同)[算法]1．变量声明X: Data Typei,j,low, high,mid,r:0..n2．每循环一次插入一个R[i]循环：i以1为步长，从2到n，反复执行。(1)准备X←R[i];(1); high←i-1;(2)找插入位置循环：当(2)时，反复执行。(3)若X.key＜R[mid].key则high←mid-1;否则 (4)(3)后移循环：j以-1为步长，从(5)，反复执行。R[j+1]←R[j](4)插入R[low]←X3．算法结束
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Evaluate the following SQL statement used to create the PRODUCTS table:Which statement is true regarding this command?()
A. It executes successfully but partition pruning cannot happen for this partition key.B. It produces an error because the TOTAL_VALUE column cannot be used as a partition key.C. It produces an error because compression cannot be used for the TOTAL_VALUE partition key.D. It executes successfully but the values in the TOTAL_VALUE column would not be physically stored in the partitions.
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Which encryption type is used to secure user data in an IPsec tunnel?()
A. symmetric key encryptionB. asymmetric key encryptionC. RSAD. digital certificates
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阅读以下函数说明和C语言函数，将应填入(n)处的字句写在对应栏内。[说明]已知r[1...n]是n个记录的递增有序表，用折半查找法查找关键字为k的记录。若查找失败，则输出“failure",函数返回值为0；否则输出“success”，函数返回值为该记录的序号值。[C函数]int binary search(struct recordtype r[],int n,keytype k){ intmid,low=1,hig=n;while(low＜=hig){mid=(1);if(k＜r[mid].key) (2);else if(k==r[mid].key){printf("succesS\n");(3);}else (4);}printf("failure\n");(5);}
考题
第四题 阅读以下说明、C函数和问题，回答问题1和问题2将解答填入答题纸的对应栏内。
【说明】
当数组中的元素已经排列有序时，可以采用折半查找（二分查找）法查找一个元素。下面的函数biSearch(int r[]，int low，int high，int key)用非递归方式在数组r中进行二分查找，函数biSearch_rec(int r[]，int low，int high，int key)采用递归方式在数组r中进行二分查找，函数的返回值都为所找到元素的下标；若找不到，则返回-1。
【C函数1】
int biSearch(int r[]，int low，int high，int key)
//r[low..high] 中的元素按非递减顺序排列
//用二分查找法在数组r中查找与key相同的元素
//若找到则返回该元素在数组r的下标，否则返回-1
{
int mid;
while(（1）) {
mid = (low+high)/2 ;
if (key ==r[mid])
return mid;
else if (key （2）;
else
（3）;
}/*while*/
return -1;
}/*biSearch*/
【C 函数 2】
int biSearch_rec(int r[]，int low，int high，int key)
//r[low..high]中的元素按非递减顺序排列
//用二分查找法在数组r中查找与key相同的元素
//若找到则返回该元素在数组r的下标，否则返回-1
{
int mid;
if(（4）) {
mid = (low+high)/2 ;
if (key ==r[mid])
return mid;
else if (key return biSearch_rec(（5）,key);
else
return biSearch_rec(（6）,key);
}/*if*/
return -1;
}/*biSearch_rec*/ 问题：4.1 (12分）
请填充C函数1和C函数2中的空缺，将解答填入答题纸的对应栏内。 问题：4.2 (3分）
若有序数组中有n个元素，采用二分查找法查找一个元素时，最多与（ ）个数组元素进行比较，即可确定查找结果。
（7）备选答案：
A.[log2(n+1)] B.[n/2] C.n-1 D.n
考题
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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All three types of cryptography schemes have unique function mapping to specific．For example,the symmetric key approach（ ）is typically used for the encryption of data providing（ ）,whereas asymmetric key cryptography is maidy used in key（ ）and nonrepudiation,thereby providing confidentiality and authentication．The hash（本题）（noncryptic）,on the other hand,does not provide confidentiality but provides message integrity,and cryptographic hash algorithms provide message（ ）and identity of peers during transport over insecure channels．A.Algorithm
B.Secure
C.structure
D.encryption
考题
键盘事件的执行顺序是（）。AKey Press、Key Down、Key UpBKey Down、Key Press、Key UpCKey Up、Key Down、Key PressDKey Up、Key Press、Key Down
考题
Usually low key is used for emphasis and contrast; mid key indicates an expected, neutral attitude; and low key provides low information.（）A对B错
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Usually low key is used for emphasis and contrast; mid key indicates an expected, neutral attitude; and low key provides low information.（）
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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
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Which statement is true regarding a session key in the Diffie-Hellman key-exchange process?（）A、A session key value is exchanged across the network.B、A session key never passes across the network.C、A session key is used as the key for asymmetric data encryption.D、A session key is used as the key for symmetric data encryption.
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键盘事件的执行顺序是（）。A、Key Press、Key Down、Key UpB、Key Down、Key Press、Key UpC、Key Up、Key Down、Key PressD、Key Up、Key Press、Key Down
考题
完成下列折半插入排序算法。 Void binasort（struct node r[MAXSIZE]，int n） {for（i=2；i=n；i++）{ r[0]=r[i]；low=1；high=i-1； while（low=high）{ mid=（low+high）/2； if（r[0].key else low=mid+1 ； } for（j=i-1；j=low；j- -）r[j+1]=r[j] ； r[low]=（） ； } }
考题
What is one reason that WPA encryption is preferred over WEP?（）A、A WPA key is longer and requires more special characters than the WEP key.B、The access point and the client are manually configured with different WPA key values.C、WPA key values remain the same until the client configuration is changed.D、The values of WPA keys can change dynamically while the system is used.
考题
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）
考题
Which two statements regarding asymmetric key encryption are true？（）A、The same key is used for encryption and decryption.B、It is commonly used to create digital certificate signatures.C、It uses two keys： one for encryption and a different key for decryption.D、An attacker can decrypt data if the attacker captures the key used for encryption
考题
多选题Which three are distinctions between asymmetric and symmetric algorithms？ （）AOnly symmetric algorithms have a key exchange technology built inBAsymmetric algorithms are used quite often as key exchange protocols for symmetricalgorithmsCOnly asymmetric algorithms have a key exchange technology built inDAsymmetric algorithms are based on more complex mathematical computations
考题
多选题Which two statements regarding asymmetric key encryption are true？（）AThe same key is used for encryption and decryption.BIt is commonly used to create digital certificate signatures.CIt uses two keys： one for encryption and a different key for decryption.DAn attacker can decrypt data if the attacker captures the key used for encryption
考题
单选题Which encryption type is used to secure user data in an IPsec tunnel?（）A
symmetric key encryptionB
asymmetric key encryptionC
RSAD
digital certificates
考题
单选题Which of the following is used by BitLocker to lock an encryption key and protect data?（）A
ECPB
IRQC
AGPD
TPM
考题
多选题Which two statements regarding symmetric key encryption are true?（） (Choose two.)AThe same key is used for encryption and decryption.BIt is commonly used to create digital certificate signatures.CIt uses two keys: one for encryption and a different key for decryption.DAn attacker can decrypt data if the attacker captures the key used for encryption.
考题
单选题Which statement is true regarding a session key in the Diffie-Hellman key-exchange process?（）A
A session key value is exchanged across the network.B
A session key never passes across the network.C
A session key is used as the key for asymmetric data encryption.D
A session key is used as the key for symmetric data encryption.
考题
单选题What is one reason that WPA encryption is preferred over WEP（）。A
A WPA key is longer and requires more special characters than the WEP key.B
The access point and the client are manually configured with different WPA key values.C
WPA key values remain the same until the client configuration is changed.D
The values of WPA keys can change dynamically while the system is used.
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