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Birthday attacks are used against which of the following？（）
- A、 digital signatures
- B、 symmetric ciphering
- C、 hashalgoritms
- D、 asymmetric ciphering
- E、 digital certificates
参考答案
更多 “Birthday attacks are used against which of the following？（）A、 digital signaturesB、 symmetric cipheringC、 hashalgoritmsD、 asymmetric cipheringE、 digital certificates” 相关考题
考题
●Most computer systems are (71) to two different groups of attacks:Insider attacks and outsider attacks． A system that is known to be (72) to an outsider attack by preventing (73) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (74) users． Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks． These attacks are usually (75) by tools referred to as Intrusion Detection Systems．(71) A．vulnerableB．weekC．sensitivelyD．helpless(72) A．reliableB．secureC．indestructibleD．steady(73) A．visitB．accessC．I/OD．read/write(74) A．powerB．rightsC．authorizedD．common(75) A．searchedB．checkedC．testedD．detected
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设有关系模式SC(Sno, Sname, Sex, Birthday, Cno, Cname, Grade, Tno, Tname)满足函数 依赖集：{Sno→Sname, Sno→Sex, Sno→Birthday, Cno→Cname,(Sno, Cno)→Grade, Tno→Tname}.SC的主码和属性集(Sno, Tno)的闭包分别是A．(Sno,Tno)和{Cno,Cname,Grade,Tno,Tname}B．(Sno, Cno,Tno) 和{Sno, Sname, Sex, Birthday, Cno}C．(Sno, Cno)和{Sno, Sname, Sex, Birthday, Cno, Cname, Grade}D．(Sno, Cno,Tno)和{Sno, Sname, Sex, Birthday, Tno, Tname}
考题
—Why didn’t you come to my birthday party yesterday?—
A.Excuse me, my friend sent me a flowerB.Fine, I never go to birthday partiesC.Ha…ha, I don’t like birthday partiesD.Sorry, but my wife had a car accident
考题
AI'm Joe． I-m twelve years old． I like September very much． September 9th is my birthday， and my father's birthday is in September，too．We have a birthday party ev-ery year． Teachers Day is in September， too． And I can play with all my teachers． So September is my favorite． What about you?( )21．1t is Joe's________ birthday this year．A． twelveB．twelfthC． ninthD． nine
考题
I have just got an iPod as my birthday gift.()A、 Good luckH、 That’s rightC、 Congratulat
I have just got an iPod as my birthday gift.()A、 Good luckB、 That’s rightC、 Congratulations
考题
Write an invitation letter based on the following situation:Your birthday is on Saturday next week. Please write an informal invitation letter to invite your American friend Peter to come to your home for your birthday party.
考题
Most computer systems are(165)to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be(166)to an outsider attack by preventing(167)from outside can still be vulnerable to the insider attacks accomplished by abusive usage of(168)users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually(169)by tools referred to as Intrusion Detection Systems.A．vulnerableB．weekC．sensitivelyD．helpless
考题
Most computer systems are (71) to two different groups of attacks：insider attacks and outsider attacks．A system that is known to be (72) to an outsider attack by preventing(73) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (74) users．Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment,but also helps to prevent future attacks．These attacks are usually (75) by tools referred to as Intrusion Detection Systems．(77)A．vulnerableB．weekC．helplessD．sensitively
考题
Upon release to the atmosphere，LFG readily ______．A.VaporizesB.Attacks causticallyC.RisesD.Attacks corrosively
考题
二、考题解析
【教案】
Teaching aims:
Knowledge aim: Students will master the sentence pattern and new words such as: My birthday is in…， January, February and so on.
Ability aim: Students will improve their speaking ability through group work
Emotional aim: Students will take part in the class actively and be fond of learning English.
Key and difficult point:
master the meaning of the sentence pattern and new words.
speak freely in class and improve their speaking skill.
Teaching procedure:
Step 1: Warming-up
Greeting the Ss + today is Kelly’s birthday, sing the birthday song;
Step 2: Presentation
Use calendar to teach the words about month. Teach the sentence pattern “my birthday is in…” by asking, “When is your birthday?”
Step 3: Practice
Mechanical drilling: Play Bomb game to practice the pronunciation.
Meaningful drilling: categorize 12 month into 4 groups according to the season. Picture to present seasons might be used.
Step4: Production
Making a conversation asking“when is your birthday?”
考题
Happy birthday to you!（）AHappy birthday to you!BI am very glad．CThat's all right．DThank you．
考题
Why didn’t you come to my birthday party yesterday? --（）A、Excuse me，my friend sent me a flowerB、Fine，I never go to birthday partiesC、Well，I don’t like birthday partiesD、Sorry，but my wife had a car accident
考题
Happy birthday to you!（）A、Happy birthday to you!B、I am very glad．C、That's all right．D、Thank you．
考题
I will throw a birthday party to observe my 18th birthday.句中observe一词的意思是（）。A、观察B、听课C、遵守D、庆祝生日
考题
有下列语句： struct Birthday{public int year； public int month； public int day；}； struct Student{ int no； string name； int age； public Birthday bir； }； …… Student Stu； 如果要把Stu的出生年份赋值为1988，正确的语句是（）A、 Stu.bir.year=1988；B、 Stu.year=1988；C、 Stu. Birthday.year=1988；D、 Student. Birthday.year=1988；
考题
Which two statements about common network attacks are true？（）A、Access attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks.B、Access attacks can consist of password attacks，ping sweeps，port scans，and man-in-the-middle attacks.C、Access attacks can consist of packet sniffers，ping sweeps，port scans，and man-in-the-middle attacks.D、Reconnaissance attacks can consist of password attacks，trust exploitation，port redirection and Internet information queries.E、Reconnaissance attacks can consist of packet sniffers，port scans，ping sweeps，and Internet information queries.F、Reconnaissance attacks can consist of ping sweeps，port scans，man-in-middle attacks and Internet information queries.
考题
How doTCP SYN attacks take advantage ofTCPto prevent new connections from being established to a host under attack？（）A、These attacks send multiple FIN segments forcing TCP connection release.B、These attacks fill up a hosts’ listen queue by failing to ACK partially openedTCPconnections.C、These attacks take advantage of the hosts transmit backoff algorithm by sending jam signals to the host.D、These attacks increment the ISN of each segment by a random number causing constant TCP retransmissions.E、These attacks send TCP RST segments in response toconnection SYN+ACK segments forcing SYN retransmissions.
考题
单选题Birthday attacks are used against which of the following？（）A
digital signaturesB
symmetric cipheringC
hashalgoritmsD
asymmetric cipheringE
digital certificates
考题
单选题Happy birthday to you!（）A
Happy birthday to you!B
I am very glad．C
That's all right．D
Thank you．
考题
单选题How doTCP SYN attacks take advantage ofTCPto prevent new connections from being established to a host under attack？（）A
These attacks send multiple FIN segments forcing TCP connection release.B
These attacks fill up a hosts’ listen queue by failing to ACK partially openedTCPconnections.C
These attacks take advantage of the hosts transmit backoff algorithm by sending jam signals to the host.D
These attacks increment the ISN of each segment by a random number causing constant TCP retransmissions.E
These attacks send TCP RST segments in response toconnection SYN+ACK segments forcing SYN retransmissions.
考题
多选题Which two network attack statements are true？（）AAccess attacks can consist of password attacks，trust exploitation，port redirection，and man-in-the-middle attacks.BAccess attacks can consist of UDP and TCP SYN flooding，ICMP echo-request floods，and ICMP directed broadcasts.CDoS attacks can be reduced through the use of access control configuration，encryption，and RFC 2827 filtering.DDoS attacks can consist of IP spoofing and DDoS attacks.EIP spoofing can be reduced through the use of policy-based routing.FIP spoofing exploits known vulnerabilities in authentication services， FTP services，and web services to gain entry to web accounts，confidential databases，and other sensitive information.
考题
单选题Happy birthday to you!（）A
Happy birthday to youB
I'm very gladC
That's all rightD
Thank you
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