計算機三級題庫第一套

1、 第一套 1.計算并填寫下表2.如下圖所示，某校園網(wǎng)用10Gbps 的POS技術(shù)與Internet相連，POS接口的幀格式是SDH。路由協(xié)議的選擇方案是校園網(wǎng)內(nèi)部采用OSPF協(xié)議，校園網(wǎng)與Internet的連接使用靜態(tài)路由協(xié)議。校園網(wǎng)內(nèi)的路由器R1設(shè)為DHCP服務(wù)器，可分配的IP地址是92/26，其中00-54地址除外，地址租用時間為5小時30分。問題：請閱讀以下R3和R1的部分配置信息，并補充下列空白處的配置命令或參數(shù)，按題目要求完成路由器的配置。R3的POS接口、OSPF和缺省路由的配置信息Router-R3 #config

2、ure terminalRouter-R3 (config)#interface pos4/0Router-R3 (config-if)#description To InternetRouter-R3 (config-if)#bandwidth Router-R3 (config-if)#ip address 70 52Router-R3 (config-if)# 【6】 32Router-R3 (config-if)#pos framing sdhRouter-R3 (config-if)#no ip directed-broadcast R

3、outer-R3 (config-if)#pos flag s1s0 2Router-R3 (config-if)#no shutdownRouter-R3 (config-if)#exitRouter-R3 (config)#router ospf 63Router-R3 (config-router)#network 【7】 area 0Router-R3 (config-router)#redistribute connected metric-type 1 subnetsRouter-R3 (config-router)#area 0 range 【8】 Router-R3 (conf

4、ig-router)#exitRouter-R3 (config)#ip route 69Router-R3 (config)#exitRouter-R3 #R1的DHCP的部分配置信息Router-R1 #configure terminalRouter-R1 (config)#ip dhcp 【9】 00 54Router-R1 (config)#ip dhcp pool buptRouter-R1 (dhcp-config)#network 92 255.255.255

5、.192Router-R1 (dhcp-config)#default-router 93Router-R1 (dhcp-config)#domain-name Router-R1 (dhcp-config)#dns-server address 7 6Router-R1 (dhcp-config)#lease 【10】 Router-R1 (dhcp-config)#exitRouter-R1 (config)#exit Router-R1 # 3.某客戶機使用DHCP獲取IP地址等信息，其獲取IP地址過

6、程中捕獲的4條報文及對第2條報文分析如下所示。請分析其中的信息，補全內(nèi)容。編號報文摘要1DHCP:Request, Type:DHCP discover2DHCP:Reply, Type:DHCP 【11】 3DHCP:Request, Type:DHCP Request4DHCP:Reply, Type:DHCP ACKDLC: - DLC Header -DLC: Destination = 【12】 DLC: Source = 5DLC: Ethertype = 0800 (IP)IP: D = 【13】 ,S = 【14】 : D= 68,S = 67DHCP:

7、 - DHCP Header -DHCP: Boot record type = 2 (Reply)DHCP: Hardware address type = 1 (10M Ethernet)DHCP: Hardware address length = 6 bytesDHCP: Hops = 0DHCP: Transaction id = FDHCP: Elapsed boot time = 0 secondsDHCP: Flags = 0000DHCP: 0 = no broadcastDHCP: Client self-assigned address = DHCP: Cl

8、ient address =80DHCP: Next Server to use in bootstrap = DHCP: Relay Agent = DHCP: Client hardware address = 0DHCP: Host name = DHCP: Boot file name = DHCP: Vendor Information tag = DHCP: Message Type = 2DHCP: Address renewel interval = (seconds)DHCP: Address rebinding interval = (seconds)DHCP: Request IP Address leased time = (seconds)DHCP: Sever IP Address = 【15】 DHCP: Subnet mask = DHCP: Gateway address = 00 DHCP: Domain Name Server address = 00 4.下圖是校園網(wǎng)某臺主機在命令行模式下執(zhí)行某個命令時用sniffer捕獲的數(shù)據(jù)包