A.存储资源代码的服务器和财务数据服务器B.Web服务器和邮件服务器C.多媒体服务器和vOD服务器D.网
A.存储资源代码的服务器和财务数据服务器 B.Web服务器和邮件服务器 C.多媒体服务器和vOD服务器 D.网络入侵检测服务器和网络流量监控服务器
A.存储资源代码的服务器和财务数据服务器 B.Web服务器和邮件服务器 C.多媒体服务器和vOD服务器 D.网络入侵检测服务器和网络流量监控服务器
方案一:
1)出口设备采用1台配置防火墙板卡的核心交换机,并且使用防火墙策略将需要对校园网做应用的服务器进行地址映射;
2)采用4台高性能服务器实现整体架构,其中3台作为财务应用服务器、1台作为数据备份管理服务器;
3)通过备份管理软件的备份策略将3台财务应用服务器的数据进行定期备份。
方案二:
1)出口设备采用1台配置防火墙板卡的核心交换机,并且使用防火墙策略将需要对校园网做应用的服务器进行地址映射;
2)采用2台高性能服务器实现整体架构,服务器采用虚拟化技术,建多个虚拟机满足财务系统业务需求。当一台服务器出现物理故障时将业务迁移到另外一台物理服务器上。
与方案一相比,方案二的优点是()。方案二还有一些缺点,下列不属于其缺点的是()。
A.网络的安全性得到保障 B.数据的安全性得到保障 C.业务的连续性得到保障 D.业务的可用性得到保障 A.缺少企业级磁盘阵列,不能将数据进行统一的存储与管理 B.缺少网闸,不能实现财务系统与Internet的物理隔离 C.缺少安全审计,不便于相关行为的记录、存储与分析 D.缺少内部财务用户接口,不便于快速管理与维护
(1)A. 1.544Mb/s
B. 2.048Mb/s
C. 6.312Mb/s
D. 44.736Mb/s
(2)A. 56Kb/s
B. 64Kb/s
C. 128Kb/s
D. 2048Kb/s
(1)A. 1.544Mb/s
B. 2.048Mb/s
C. 6.312Mb/s
D. 44.736Mb/s
(2)A. 56Kb/s
B. 64Kb/s
C. 128Kb/s
D. 2048Kb/s
TCP functions at the Open Systems Interconnection(OSI)transport layer, or Layer 4. Its chief responsibility is to ensure reliable end-to-end connectivity. IP, located one layer (1), at the OSI network layer, or Layer 3,communicates the addresses of each packet’s sender and receiver to the routers along the way .Routers and Layer 3 switches can read IP and other Layer 3 protocols. This information, combined with routing tables and other network intelligence, it takes to get across the room or around the world(2)TCP/IP.
The routing process begins with an IP address that is(3)to the sending end station. End stations may be assigned permanent IP addresses or they may borrow them as needed from a Dynamic Host Configuration Protocol(DHCP)server or other service. If the sending end station determines that the destination address is not local, the packet goes to a first-hop router, typically one that is close and has been reassigned to the(4). The router inspects the packet’s IP address and performs a route table lookup to see if the destination end station resides on the local(physically connected)network, typically called an IP subnet. An IP subnet usually is assigned to each of the router’s network interfaces. If the destination IP address is local, the router searches an internal store of IP addresses and local-device media access control(MAC)addresses. This store is known as the Address Resolution Protocol(ARP) cache. ARP is the universal tool for(5)IP addresses to MAC addresses. If the destination’s MAC address appears, the router installs that MAC address in the packet header(removing its own MAC address because that’s no longer needed)and sends the packet to the destination end station.
(1)A. up
B. down
C. sideward
D. back-fence
(2)A. via
B. through
C. by
D. through out
(3)A. special
B. especial
C. unique
D. particular
(4)A. accepter
B. sender
C. router
D. server
(5)A. searching
B. looking
C. locating
D. matching
(59) A. IPv6可以允许全局IP地址重复使用
B.IPv6解决了全局IP地址不足的问题
C.IPv6的出现使得卫星联网得以实现
D. IPv6的设计目标之一是支持光纤通信
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