What information is used by a switch to forward an Ethernet frame to its destination?() A. IP addressB. destination MAC addressC. ARP table entryD. FCS checksum
What information is used by a switch to forward an Ethernet frame to its destination?()
A. IP address
B. destination MAC address
C. ARP table entry
D. FCS checksum
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将交换机的access端口ethernet0/1加入VLAN4,可用如下方法配置（）。A.[Switch]vlan 4[Switch-vlan4]port ethernet0/1B.[Switch]vlan 4[Switch-Ethernet0/1]port access vlan 4C.[Switch]vlan 4[Switch-vlan4]port accesse thernet0/1D.[Switch]vlan 4[Switch-Ethernet0/1]port access vlan pvid 4[Huawei]vlan 3500[Huawei-Gigabit Ethernet0/0/1]disth interface Gigabit Ethernet0/0/1 port link-type access portdefault vlan 3500
Which action does the ping 172.18.1.1 size 5 command perform?() A. It sends only five ping requests to the 172.18.1.1 destination.B. It sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.C. It sends five rapid ping requests to the 172.18.1.1 destination.D. It sends a continuous rapid ping with a packet length of five bytes to the 172.18.1.1 destination.
当路由器收到一个目的地址为10.3.8.2的数据包时,查看自身的路由表,最终会选择哪一条路由将报文转发出去( )? Destination／Mask proto preference cost Nexthop Interface A.0.0.0.0/0 Static 60 0 10.0.0.2 Serial10/0B.10.0.0.0/8 OSPF 10 50 10.3.5.1 Ethernet0/1C.10.3.0.0/16 RIP 100 4 10.0.0.5 Serial10/1D.9.3.8.0/24 IS-IS 15 30 20.1.2.0 Ethernet0/9
A new frame－relay network is being implemented and inverse ARP does not appear to be operating correctly. Which alternative command can be used to provide connectivity?() A. frame-relay arpB. frame-relay mapC. frame-relay interface-dlciD. frame-relay lmi-typeE. frame-relay pvc
MIDI enables people to use （ ）computers and electronic musical instruments. There are actually three components to MIDI, the communications"（ ）", the Hardware interface and a distribution（ ）called "Standard MIDI Files". In the context of the WWW, the most interesting component is the （ ）Format. In principle, MIDI files contain sequences of MIDI Protocol messages: However, when MIDI Protocol（请作答此空）are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.A.messagesB.packetsC.frame]D.information
某企业的网络结构如图 4-1 所示问题：4.1 （6 分） 根据 4-1 所示，完成交换机的基本配置，请根据描述，将以下配置代 码补充完整。 （1） [HUAWEI] （2）Switch [Switch]vlan（3）10 20 30 100 200 [Switch]（4）gigabitethernet0/0/1 [Switch-GigabitEthernet0/0/1]port link-type（5） [Switch-GigabitEthernet0/0/1]port trunk allow-pass vlan（6） [Switch-GigabitEthernet0/0/1]quit [Switch]interface vlanif 10 [Switch-Vlanif10]ip address 10.10.1.1.255.255.255.0 [Switch-Vlanif10]quitVLAN 20 30 100 200 配置略 ...... 问 题 ： 4.2 按 照 公 司 规 定 ， 禁 止 市 场 部 和 研 发 部 工 作 日 每 天 8:00~18:00 访问公司视频服务器，其他部门和用户不受此限制。请根 据描述，将以下配置代码补充完整。 ...... [Switch] （7）satime 8:00 to 18:00 working-day [Switch]acl 3002 [Switch-acl-adv-3002]rule deny ip source 10.10.2.0.0.0.0.255 destination 10.10.20.1 0.0.0.0 timc-range satime [Switch-acl-adv-3002]quit [Switch]acl 3003 [Switch-acl-adv-3003]rule deny ip source 10.10.3.0.0.0.0.255 destination 10.10.20.10.0.0.0 time-range satime [Switch-acl-adv-3003]quit [Switch-acl-adv-3003]rule deny ip source 10.10.3.0.0.0.0.255 destination 10.10.20.10.0.0.0 time-range satime[Switch-acl-adv-3003]quit[Switch]traffic classifier c_market //（8[Switch-classifier-c_market]（9）acl 3002 //将 ACL 与流分类关联 [Switch-classifier-c_market]quit [Switch]traffic classifier c_rd [Switch-classifier-c_rd]if-match acl 3003 //将 ACL 与流分类关联 [Switch-classifier-c_rd]quit [Switch]（10）b_market //创建流行为 [Switch-behavior-b_market] （11） //配置流行为动作为拒绝报文通过[Switch-behavior-b market]quit [Switch]traffic behavior b_rd [Switch-behavior-b_rd]deny [Switch-behavior-b_rd]quit [Switch]（12）p_market //创建流策略 [Switch-trafficpolicy-p_market]classifier c_market behavior b_market [Switch-trafficpolicy-p_market]quit [Switch]traffic policy p_rd //创建流策略 [Switch-trafficpolicy-p_rd]classifier c_rd behavior b_rd [Switch-trafficpolicy-p_rd]quit [Switch]interface（13）[Switch-GigabitEthernet0/0/2]traffic-policy p_market（14） [Switch-GigabitEthernet0/0/2]quit [Switch]interface gigabitethernet 0/0/3 [Switch-GigabitEthernet0/0/3]traffic-policy（15）inbound [Switch-GigabitEthernet0/0/3]quit
某公司内部网络如图所示。公司要求在上班时间（8:00至17:30）才能允许vlan10访问公司内部服务器（IP地址为192.168.100.100 /24），vlan20禁止访问内部服务器，但是可以可以随时访问Internet。 Vlan 30不作限制。 Vlan 100作为服务器使用的vlan，vlan 200 用作连接防火墙的子网。为了提高网络的可靠性，设计了双核心和双防火墙，出口链路分别连接不同的运营商。问题1（14分）将设备配置补充完整交换机配置如下： system-view[HUAWEI] sysname Switch1[Switch1] vlan batch 10 20 30 100 200[Switch1] interface gigabitethernet 0/0/3[Switch1-GigabitEthernet0/0/3] port link-type （1）[Switch1-GigabitEthernet0/0/3] port trunk allow-pass vlan （2）[Switch1-GigabitEthernet0/0/3] quit[Switch1] interface vlanif 20[Switch1-Vlanif20] ip address 192.168.20.1 （3）[Switch1-Vlanif20] quit[Switch1] interface Eth-Trunk1[Switch1-Eth-Trunk1] port link-type (4)[Switch1-Eth-Trunk1]port trunk allow-pass (5)[Switch1-Eth-Trunk1] quit[Switch1]interface GigabitEthernet0/0/10[Switch1-GigabitEthernet0/0/10] (6)[Switch1]interface GigabitEthernet0/0/11[Switch1-GigabitEthernet0/0/11]eth-trunk 1…# 配置8:00至17:30的周期时间段。[Switch1] time-range (7) 8:00 to 17:30 working-day //配置ACL生效时间段[Switch1] acl 2002[Switch1-acl-adv-2002] rule (8) ip source 192.168.10.0 0.0.0.255 timerange wk1[Switch1-acl-adv-2002] quit[Switch1] acl 3003[Switch1-acl-adv-3003] rule （9）ip source 192.168.20.0 0.0.0.255 destination 192.168.100.100 0.0.0.0 [Switch1-acl-adv-3003] quit…#生成树配置…[Switch1] stp region-configuration[Switch1-mst-region] (10) gkys.com //创建域名为gkys.com[Switch1-mst-region] (11) 1 vlan 30 //创建实例与VLAN的对应关系[Switch1-mst-region] instance 2 vlan 10 to 20 //创建实例与VLAN的对应关系[Switch1-mst-region] active region-configuration[Switch1-mst-region] quit[Switch1] stp instance 1 (12) //配置Switch1为MSTI1的根桥…. #VRRP配置system-view[NGFW0]interface Ethernet1/0/0[NGFW0-Ethernet1/0/0]ip address 202.112.1.1 255.255.255.0 [NGFW0-Ethernet1/0/0]quit[NGFW0]interface Ethernet2/0/0[NGFW0-Ethernet2/0/0]ip address 192.168.200.1 255.255.255.0 [NGFW0-Ethernet2/0/0]vrrp (13) 192.168.200.100 //配置备份组1的虚拟网关地址[NGFW0-Ethernet2/0/0]vrrp vrid 1 (14) 120 //配置NGFW0在备份组1中的优先级为120[NGFW0- Ethernet2/0/0]vrrp vrid 2 virtual-ip 192.168.200.200 //配置备份组2的虚拟网关地址[NGFW0- Ethernet2/0/0]quit…..问题2（2分）关于ACL匹配规则的说法正确的是（15）A．系统通常从ACL中编号最小的规则开始查找B.如果匹配上了permit规则，则继续查找规则，直到返回ACL匹配结果为：匹配（允许）。C.如果匹配上了deny规则，则继续查找规则，直到返回ACL匹配结果为：匹配（拒绝）。D. 如当前规则未匹配上，则停止查找返回ACL匹配结果为：不匹配。问题3(2分)：下面是交换机上运行STP的端口的Display信息显示，请根据这些配置信息，判断该端口的角色为（16）[Switch1]display stp interface g 0/0/3Port 0/0/3 (GigabitEthernet0/0/3) of bridge is ForwardingPort spanning tree protocol: enabledPort role: Designated PortPort path cost: 200Port priority: 128Designated bridge ID(Pri.MAC): 4096.00e0-fc41-4259The Port is a non-edged portConnected to a point-to-point LAN segmentMaximum transmission limit is 3 Packets / hello timeTimes: Hello Time 2 sec, Max Age 20 secForward Delay 15 sec, Message Age 0BPDU sent: 4TCN: 2, RST: 2, Config BPDU: 0BPDU received: 806TCN: 0, RST: 11, Config BPDU: 795A. 该端口为根端口B. 该端口为指定端口C. 该端口为预备端口D. 以上说法都不正确问题4 （2分）如果在网络配置dhcP的相关配置如下： [Switch1]dhcp enable[Switch1]interface vlanIf 100[Switch1-VLANif100]dhcp select relay[Switch1-VLANif100]dhcp Relay server-select dhcp group1对于此台交换机上的配置描述不正确的是（17）A. 默认情况下配置DHCP服务器和DHCP delay都必须开启DHCP服务。B. VLANIF 100接口对接收到的DHCP报文通过中继发送到外部DHCP Server。C. 为VLANIF 100接口指定DHCP服务器组为dhcp group 1。D. 默认dhcp group 1会自动添加网络中的DHCP服务器。
管理员要求能确保Vlan10和Vlan20能互通，并且Vlan20的用户访问外网时，使用10.1.30.1作为出口，二Vlan10的用户访问外网时，使用10.1.20.1作为出口，因此考虑使用策略路由。具体配置如下：[Switch] acl 3000[Switch-acl-adv-3000] rule permit ip source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255[Switch-acl-adv-3000] rule permit ip source 192.168.2.0 0.0.0.255 destination 192.168.1.0 0.0.0.255Switch-acl-adv-3000] quit?[Switch] acl 3001?//匹配内网192.168.1.0/24网段的数据流[Switch-acl-adv-3001]?（1）[Switch-acl-adv-3001] quit[Switch] acl 3002?//匹配内网192.168.2.0/24网段的数据流[Switch-acl-adv-3002] rule permit ip source 192.168.2.0 0.0.0.255[Switch-acl-adv-3002] quit?[Switch] traffic classifier c0 operator or[Switch-classifier-c0]?（2）[Switch-classifier-c0] quit[Switch]?（3）[Switch-classifier-c1] if-match acl 3001[Switch-classifier-c1] quit[Switch] traffic classifier c2 operator or[Switch-classifier-c2] if-match acl 3002[Switch-classifier-c2] quit[Switch] traffic behavior b0[Switch-behavior-b0]?（4）[Switch-behavior-b0] quit[Switch] traffic behavior b1[Switch-behavior-b1]?（5）[Switch-behavior-b1] quit[Switch] traffic behavior b2[Switch-behavior-b2] redirect ip-nexthop 10.1.30.1[Switch-behavior-b2] quit?[Switch]（6）[Switch-trafficpolicy-p1]?（7）[Switch-trafficpolicy-p1] classifier c1 behavior b1[Switch-trafficpolicy-p1] classifier c2 behavior b2[Switch-trafficpolicy-p1] quit[Switch] interface gigabitethernet 1/0/3[Switch-GigabitEthernet1/0/3]?（8）问题1：简要叙述ACL3000在此配置中的作用是什么？问题2：请完成（1）-（8）空的命令填空
真核生物ITS序列由ITS1和ITS2两部分组成。