A network attack is an attempt to gain (71) access to an organization' s network, with the objective of stealing data or performing other malicious activities.  ( 72) -of-service (DoS)attack is a cyber-attack in which the attacker seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network. In the case of a simple attack, a (73)could have a simple rule added to deny all incoming traffic from the attackers, based on protocols, ports, or the originating IP addresses. In a (74)DoS (DDoS)attack , the incoming traffic flooding the victim originates from (75) different sources.This effectively makes it impossible to stop the attack simply by blocking a single source.

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• 1A network attack is an attempt to gain (71) access to an organization' s network, with the objective of stealing data or performing other malicious activities.  ( 72) -of-service (DoS)attack is a cyber-attack in which the attacker seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network. In the case of a simple attack, a (73)could have a simple rule added to deny all incoming traffic from the attackers, based on protocols, ports, or the originating IP addresses. In a (74)DoS (DDoS)attack , the incoming traffic flooding the victim originates from (75) different sources.This effectively makes it impossible to stop the attack simply by blocking a single source.

  A.damaged

  B.descriptive

  C.distributed

  D.demanding

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• 2A network attack is an attempt to gain (71) access to an organization' s network, with the objective of stealing data or performing other malicious activities. ( 72) -of-service (DoS)attack is a cyber-attack in which the attacker seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network. In the case of a simple attack, a (73)could have a simple rule added to deny all incoming traffic from the attackers, based on protocols, ports, or the originating IP addresses. In a (74)DoS (DDoS)attack , the incoming traffic flooding the victim originates from (75) different sources.This effectively makes it impossible to stop the attack simply by blocking a single source.

  A.firewall

  B.router

  C.gateway

  D.switch

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• 3A network attack is an attempt to gain (71) access to an organization' s network, with the objective of stealing data or performing other malicious activities. (72) -of-service (DoS)attack is a cyber-attack in which the attacker seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network. In the case of a simple attack, a (73)could have a simple rule added to deny all incoming traffic from the attackers, based on protocols, ports, or the originating IP addresses. In a (74)DoS (DDoS)attack , the incoming traffic flooding the victim originates from (75) different sources.This effectively makes it impossible to stop the attack simply by blocking a single source.

  A.defense

  B.denial

  C.detection

  D.decision

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• 4A network attack is an attempt to gain (71) access to an organization' s network, with the objective of stealing data or performing other malicious activities. ( 72) -of-service (DoS)attack is a cyber-attack in which the attacker seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network. In the case of a simple attack, a (73)could have a simple rule added to deny all incoming traffic from the attackers, based on protocols, ports, or the originating IP addresses. In a (74)DoS (DDoS)attack , the incoming traffic flooding the victim originates from (75) different sources.This effectively makes it impossible to stop the attack simply by blocking a single source.

  A.unauthorized

  B.authorized

  C.normal

  D.frequent

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• 5以下关于信息化项目成本估算的描述中，不正确的是(70)。

  A.项目成本估算指设备采购、劳务支出等直接用于项目建设的经费估算

  B.项目成本估算需考虑项目工期要求的影响，工期要求越短成本越高

  C.项目成本估算需考虑项目质量要求的影响，质量要求越高成本越高

  D.项目成本估算过粗或过细都会影响项目成本

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