英文测试 单选题供20题40分1 1.What makes it easier for different networking vendors to design software and hardware that will interoperate? 一一（本度：容易） C A.OSI model C B.proprietary designs CC.IP addressing scheme D.standard logical topologies E.standard physical topologies 2 A 0 Application Applicabion Appication Application Session Presentation Presentation Presentation Presentation Transport Transport Session Transport Session Session Transport Network Data Link Network Network Data Link Network Data Link Data Link Physical Physical Physical Physical Refer to the exhbit Which column shows he correct sequence of OSl model layers? 一一（幸度：中等） C AA CB.B C c.c
英文测试 单选题(共 20 题,40 分) 1、What makes it easier for different networking vendors to design software and hardware that will interoperate? ——(难度: 容易) A.OSI model B.proprietary designs C.IP addressing scheme D.standard logical topologies E.standard physical topologies 2 Refer to the exhibit. Which column shows the correct sequence of OSI model layers? ——(难度: 中等) A.A B.B C.C
C D.D 3.Refer to the following list.Choose the correct order of data encapsulation when a device sends information. 1. segments 2 bits packets 4. data 5. frames 一一（难度：较难） CA.1-3-5-4-2 CB.2-1-3-5-4 0C.2-4-3-5-1 0D.4-1-3-5-2 4.The central hub has malfunctioned in the network.As a result the entire network is down.hich type of physical network topology is implemented?-一(t度：中等) C A.bus C B.star C.ring C D.mesh 5.A switch has failed in the network.As a result,only one segment of the network is down.hich type of physical network topology is implemented?-一(t度：容易)】 C A.bus
D.D 3、Refer to the following list. Choose the correct order of data encapsulation when a device sends information. 1. segments 2. bits 3. packets 4. data 5. frames ——(难度: 较难) A.1-3-5-4-2 B.2-1-3-5-4 C.2-4-3-5-1 D.4-1-3-5-2 4、The central hub has malfunctioned in the network. As a result, the entire network is down. Which type of physical network topology is implemented?——(难度: 中等) A.bus B.star C.ring D.mesh 5、A switch has failed in the network. As a result, only one segment of the network is down. Which type of physical network topology is implemented?——(难度: 容易) A.bus
C B.ring C.star D.extended star 6 Refer to the exhibit Identify the devices labeled A B.C,and D in the network physical documentation. 一一（难度：容易） C A.A=bridge,B=switch,C=router,D=hub C B.A-bridge,Bhub,C-router,D-switch C C.A=bridge,B=router,C=hub,D=switch C D.A=hub,B=bridge,C=router,D=switch 7,Wh威is a cause of cross对lk in UTP cable?一一（难度：中等） C A.cable pairs that are shorted C B.cable pairs crossed during termination C.cabling runs installed in separate conduit C D.cable pairs that are untwisted because of poor termination of the cable 8.A company needs to extend the LAN to six separale buildings.To limit the amount of signal attenuation on the LAN media,what type of media would be the best to use between the buildings?--(难度：中等) C A.air(wireless)
B.ring C.star D.extended star 6 Refer to the exhibit. Identify the devices labeled A, B, C, and D in the network physical documentation. ——(难度: 容易) A.A=bridge, B=switch, C=router, D=hub B.A=bridge, B=hub, C=router, D=switch C.A=bridge, B=router, C=hub, D=switch D.A=hub, B=bridge, C=router, D=switch 7、What is a cause of crosstalk in UTP cable?——(难度: 中等) A.cable pairs that are shorted B.cable pairs crossed during termination C.cabling runs installed in separate conduit D.cable pairs that are untwisted because of poor termination of the cable 8、A company needs to extend the LAN to six separate buildings. To limit the amount of signal attenuation on the LAN media, what type of media would be the best to use between the buildings?——(难度: 中等) A.air (wireless)
C B.coaxial cable Cc他er D.shielded twisted pair 9,hich of the following describes frequency?一-（难度：较重） CA.length of each wave B.height of each wave C C.number of cycles each second 0 D.amount of time between each wave 10.To ensure relable LAN communications,what should a technician be looking for when attaching connectors to the ends of UTP cable?-一(4度：较难) C A.that the white-orange/orange pair is attached first B.that the wire pairs remain twisted as much as possible C C.that one end of the shield is properly ground but not the other C D.that 50 ohm termination resistors are on both ends 11.Which address does a bridge use to make fitering and switching decisions? 一一（难度：容易）】 C A.source MAC C B.source IP C C.destination MAC D.destination IP 12
B.coaxial cable C.fiber D.shielded twisted pair 9、 Which of the following describes frequency?——(难度: 较难) A.length of each wave B.height of each wave C.number of cycles each second D.amount of time between each wave 10、To ensure reliable LAN communications, what should a technician be looking for when attaching connectors to the ends of UTP cable?——(难度: 较难) A.that the white-orange/orange pair is attached first B.that the wire pairs remain twisted as much as possible C.that one end of the shield is properly ground but not the other D.that 50 ohm termination resistors are on both ends 11、Which address does a bridge use to make filtering and switching decisions? ——(难度: 容易) A.source MAC B.source IP C.destination MAC D.destination IP 12
Workstation (Serial Port) ■Workstation0NlCG 网ortt城tion (NIC Refer to the exhibit.What is the appropriate cable to use at each of the numbered network connections? 一一（难度：较难） C A.1-crossover;2-straight-through;3-crossover;4-straight-through C B.1-straight-through;2-crossover;3-straight-through; 4-straight-through C C.1-straight-through;2-crossover;3-crossover;4-straight-through D.1-rollover;2-crossover;3-straight-through;4-straight-through 13
Refer to the exhibit. What is the appropriate cable to use at each of the numbered network connections? ——(难度: 较难) A.1-crossover; 2-straight-through; 3-crossover; 4-straight-through B.1-straight-through; 2-crossover; 3-straight-through; 4-straight-through C.1-straight-through; 2-crossover; 3-crossover; 4-straight-through D.1-rollover; 2-crossover; 3-straight-through; 4-straight-through 13
The ends of a UTP cable are shown in the exhibit.Which cable configuration is shown? 一一（难度：中等） A.reversed-pair C B.straight-through CC.split-pair C D.console 14.What device is used to comnect hosts to an Ethernet LAN and requires a straight-through UTP cable between the hosts and this device? 一一（难度：容易） C A.NIC C B.router CC.switch C D.server 15.Which statement describes a typical use of Gigabit Ethernet? 一一（难度：容易） C A.to provide high-speed desktop connectivity for average users C B.to provide connectivity to low to medium volume applications C.to provide medium volume connectivity to workgroup servers D.to provide high-speed connectivity for backbones and cross connects
The ends of a UTP cable are shown in the exhibit. Which cable configuration is shown? ——(难度: 中等) A.reversed-pair B.straight-through C.split-pair D.console 14、What device is used to connect hosts to an Ethernet LAN and requires a straight-through UTP cable between the hosts and this device? ——(难度: 容易) A.NIC B.router C.switch D.server 15、Which statement describes a typical use of Gigabit Ethernet? ——(难度: 容易) A.to provide high-speed desktop connectivity for average users B.to provide connectivity to low to medium volume applications C.to provide medium volume connectivity to workgroup servers D.to provide high-speed connectivity for backbones and cross connects
16.What is used to prevent Layer 2 switching loops? 一一（难度：容易） C A.bridging C B.segmentation C C.Address Resolution Protocol C D.Spanning-Tree Protocol 17.Which networking device reduces the size of both collision domains and broadcast domains？ 一一（难度：中等） C A.Layer 2 switch C B.router CC.bridge D.repeater 18.An administrator would like to connectten workstations on a 192.168.0.0/24 network.The device selected by the administrator must alow connectivity between hosts without sharing bandwidth.Which device would be appropriate? 一一（难度：中等）】 C A.switch B.hub C.router D.repeater
16、What is used to prevent Layer 2 switching loops? ——(难度: 容易) A.bridging B.segmentation C.Address Resolution Protocol D.Spanning-Tree Protocol 17、Which networking device reduces the size of both collision domains and broadcast domains? ——(难度: 中等) A.Layer 2 switch B.router C.bridge D.repeater 18、An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate? ——(难度: 中等) A.switch B.hub C.router D.repeater
19.A PC receives a frame.Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC? 一一（本度：容易）】 C A.The frame is a runt frame. C B.The destination MAC address of the frame is FFFF.FFFF.FFFF. C C.The transmitting host generated a jam signal during the frame transmission. C D.The recalculated checksum for the frame does not match the FCS on the frame. 20.Which IPv4 class of addresses provides the most networks? 一一（难度：容易》】 C A.Class A C B.Class B CC.Class C 0 D.Class D 多墟题（共20框，60分） 1.What are two facts about how ARP resolves an IP address to a MAC address? (Choose two.】 一一（难度：中等） 了 A.The originating host dynamically issues an arp -a command to obtain the destination MAC address. B.The originating host broadcasts an ARP request packet and each host in a local network receives this packet. C.The originating host dynamically issues an icmp echo request
19、A PC receives a frame. Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC? ——(难度: 容易) A.The frame is a runt frame. B.The destination MAC address of the frame is FFFF.FFFF.FFFF. C.The transmitting host generated a jam signal during the frame transmission. D.The recalculated checksum for the frame does not match the FCS on the frame. 20、Which IPv4 class of addresses provides the most networks? ——(难度: 容易) A.Class A B.Class B C.Class C D.Class D 多选题(共 20 题,60 分) 1、What are two facts about how ARP resolves an IP address to a MAC address? (Choose two.) ——(难度: 中等) A.The originating host dynamically issues an arp –a command to obtain the destination MAC address. B.The originating host broadcasts an ARP request packet and each host in a local network receives this packet. C.The originating host dynamically issues an icmp echo request
command to obtain the destination MAC address. D.The host with the specified destination IP address sends an ARP reply packet containing its MAC address back to the originating host. E.The host with the specified destination IP address sends an icmp echo reply packet to the originating host with its MAC address. 2 C:\Docunents and Settinge\Cheryl>arp 192,168.1.94 Tp 192.168.1.97 192,168.1.251 6 dynanie Refer to the exhibit Based on the information shown,which two statements are true? (Choose two.) 一一（难度：较难） 「 A.An ARP request must be used to obtain an address that is placed in the ARP table. B.Frames from other hosts in the network to this host will use a destination address of 00-06-25-25-6e-5d. C.The only remote locations that can be reached from this host are 192.,168.1.97and192.168.1.254 D.If a packet is sent to a network device other than 192.168.1.97 and 192.168.1.254,an ARP request must be used. E.If the computer with the IP address of 192.168.1.94 sends a packet to the device with the IP address 192.168.1.97,no ARP request is required. 3
command to obtain the destination MAC address. D.The host with the specified destination IP address sends an ARP reply packet containing its MAC address back to the originating host. E.The host with the specified destination IP address sends an icmp echo reply packet to the originating host with its MAC address. 2 Refer to the exhibit. Based on the information shown, which two statements are true? (Choose two.) ——(难度: 较难) A.An ARP request must be used to obtain an address that is placed in the ARP table. B.Frames from other hosts in the network to this host will use a destination address of 00-06-25-25-6e-5d. C.The only remote locations that can be reached from this host are 192.168.1.97 and 192.168.1.254. D.If a packet is sent to a network device other than 192.168.1.97 and 192.168.1.254, an ARP request must be used. E.If the computer with the IP address of 192.168.1.94 sends a packet to the device with the IP address 192.168.1.97, no ARP request is required. 3
c/>ipconfig fall 《output omitted> Pnysical Address 444444 :00-50-80-F1-EA8 Dhcp Enabled. :Yes Autoconnguration Enabled.Yes IP Address............ 192.168.1.100 Subnet Mask 255.255.255.0 Default Gateway 192.168.1.1 DHCP Server 192.168.1.1 DNS Servers........... 688764.196 68.87.66.196 Lease Obtained........ Tuesday.June 14,2005 5:28:57 PM Lease Expires. Wednesday.June 15.2005 5:28:57 PM Refer to the exhibit Which two statements are correct in reference to the outout shown?(Choose two.) 一一难度：中等) A.The LAN segment is subnetted to allow 254 subnets. B.The DNS server for this hostis on the same subnet as the host. C.The host automaticaly obtained the IP addresses 192.168.1.100. D.The host received the IP address from the routeron the local LAN segment. E.The host is assigned an address of00-50-8D-F1-EA-8D by the administrator. 4.Which two statements comrectly describe the IP address 127.0.0.1?(Choose two.) 一一（难度：较难）】 A.It belongs to the Class A range of addresses. B.It belongs to the Class B range of addresses. C.It belongs to the Class C range of addresses. D.It is reserved for loopback testing. E.It is reserved for multicast group testing
Refer to the exhibit. Which two statements are correct in reference to the output shown? (Choose two.) ——(难度: 中等) A.The LAN segment is subnetted to allow 254 subnets. B.TheDNS server for this host is on the same subnet as the host. C.The host automatically obtained the IP addresses 192.168.1.100. D.The host received the IP address from the router on the local LAN segment. E.The host is assigned an address of 00-50-8D-F1-EA-8D by the administrator. 4、Which two statements correctly describe the IP address 127.0.0.1? (Choose two.) ——(难度: 较难) A.It belongs to the Class A range of addresses. B.It belongs to the Class B range of addresses. C.It belongs to the Class C range of addresses. D.It is reserved for loopback testing. E.It is reserved for multicast group testing