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1某存储系统规划配置25块8TB磁盘，创建2个RAID6组，配置1块热备盘，则该存储系统实际存储容 量是（68）。
A.200TB
B.192TB
C.176TB
D.160TB
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2以下关于层次化网络设计模型的描述中，不正确的是（67）。
A.终端用户网关通常部署在核心层，实现不同区域间的数据高速转发
B.流量负载和VLAN间路由在汇聚层实现
C.MAC地址过滤、路由发现在接入层实现
D.接入层连接无线AP等终端设备
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3某无线路由器，在2.4GH频道上配置了 2个信道，使用（66）信道间干扰最小。
A.1 和 3
B.4 和 7
C.6 和 10
D.7 和 12
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4下列IEEE 802. 11系列标准中，支持2. 4GHz和5GHz两个工作频段的是（65）。
A.802. 11a
B.802. 11ac
C.802.11b
D.802.11g
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5以下关于二进制指数退避算法的描述中，正确的是（64）。
A.每次站点等待的时间是固定的，即上次的2倍
B.后一次退避时间一定比前一次长
C.发生冲突不一定是站点发生了资源抢占
D.通过扩大退避窗口杜绝了再次冲突
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6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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7A 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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8A 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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9A 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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10A 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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