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CCNA题库V104.2 补充新题 64Q(题库改版后新题目)

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CCNA最新题库/最新战报发布区：

https://www.wendangku.net/doc/425911537.html,/forum-261-1.html

CCNA

考试代号：640-802

考试时间：中文110分钟

英文110+30=140分钟

通过分数：825

题库版本：V104.2

Exam A

QUESTION 1

Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12on a switch?(choose two)A.SW1#show swithport port-security interface FastEthernet 0/12B.SW1# show swithport port-secure interface FastEthernet 0/12C.SW1# show port-secure interface FastEthernet 0/12D.

SW1#show running-config

Answer: CD

QUESTION 2

Which component of VPN technology ensures that data can be read only by its intended recipient?A.data integrity B.encryption C.key exchange D.

authentication

Answer: D

QUESTION 3

Refer to the exhibit.What is the effect of the configuration that is shown?

A.It tells the router or switch to try establish an SSH connection first and if that fail to use telnet.

B.Itconfigures a cisco network device to use the SSH protocol on incoming communications via the virtual

terminal ports.

C.It allows seven failed login attempts before the VTY lines are temporarily shutdown.

D.It configures the virtual terminal lines with the password 030752180500.

E.It configures SSH globally for all logins.Answer: B

QUESTION 4

Which IPV6 routing protocol uses multicast group FFO2::8 to send updates?A.RIPng B.OSPFv3

C.IS-IS for IPv6

static

Answer: C

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Which of the following are true regarding the debug output shown in the graphic?(choose two)

A.This router was configured with the commands:

RtrA(config)#router rip

RtrA(config-router)#version 2

RtrA(config-router)#network 172.16.0.0RtrA(config-router)#network 10.0.0.0

B.This router was configured with the commands:

RtrA(config)#router rip

RtrA(config-router)#network 172.16.0.0RtrA(config-router)#network 10.0.0.0

C.etwork 10.0.0.0 will be displayed in the routing table.

https://www.wendangku.net/doc/425911537.html,work 192.168.168.0 will be displayed in the routing table.

E.This router was configured with the commands:

RtrA(config)#router rip

RtrA(config-router)#network 192.168.1.0RtrA(config-router)#network 10.0.0.0

RtrA(config-router)#network 192.168.168.0F.split-horizon was disabled on this router.Answer: BC

QUESTION 6

The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?A.10.10.0.0/18 subnetted with mask 255.255.255.252B.10.10.0.0/25 subnetted with mask 255.255.255.252C.10.10.0.0/24 subnetted with mask 255.255.255.252D.10.10.0.0/23 subnetted with mask 255.255.255.252E.

10.10.0.0/16 subnetted with mask 255.255.255.252

Answer: D

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VLAN 3 is not yet configured on your switch.What happens if you set the switchport access vlan 3commmand interface configuration mode?A.The command is accepted and the respective VLAN is added to vlan dat.B.The command is rejected.

C.The command is accepted and you must configure the VLAN manually.

The port turns amber.

Answer: A

QUESTION 8

Which parameter can be tuned to affect the selection of a static route as a backup.when a dynamic protocol is also being used?A.link bandwidth B.hop count C.link cost

D.administrative distance

link delay

Answer: D

QUESTION 9

Refer to the exhibit. In the Frame Relay network, which ip address would be assigned to the interfaces with point-to-poin PVCs?

A.DLCI 16:192.168.10.1/24

DLCI 17:192.168.10.2/24DLCI 99:192.168.10.3/24DLCI 28:192.168.10.4/24

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B.DLCI 16:192.168.10.1/24

DLCI 17:192.168.11.1/24DLCI 99:192.168.10.2/24DLCI 28:192.168.11.2/24C.DLCI 16:192.168.10.1/24

DLCI 17:192.168.11.1/24DLCI 99:192.168.12.1/24

DLCI 28:192.168.13.1/24D.DLCI 16:192.168.10.1/24

DLCI 17:192.168.10.1/24DLCI 99:192.168.10.2/24DLCI 28:192.168.10.3/24Answer: B

QUESTION 10

Why will a switch never learn a broadcast address?A.Broadcast frames are never sent to swiches.

B.Broadcast addresses use an incorrect format for the switching table.

C. A broadcast address will never be the source address of a frame.

D.Broadcasts only use network layer addressing.

A broadcast frame is never forwarded by a switch.

Answer: C

QUESTION 11

Wich command can you use to manually assign a static IPV6 address to a muter interface?A.ipv6 address PREFIX_1::1/64

B.ipv6 autoconfig 2001:db8:2222:7272::72/64

C.ipv6 autoconfig

ipv6 address 2001:db8:2222:7272::72/64

Answer: D

QUESTION 12

The EIGRP configuration in the Glencoe router uses a single network statement.From the output shown in the graph would advertise these networks in EIGRP?

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https://www.wendangku.net/doc/425911537.html,work 172.26.168.0 area 478

https://www.wendangku.net/doc/425911537.html,work 172.26.0.0

https://www.wendangku.net/doc/425911537.html,work 172.26.168.128 0.0.0.127

https://www.wendangku.net/doc/425911537.html,work 172.26.168.128 area 478

Answer: B

QUESTION 13

Which IPsec security protocol should be used when confidentiality is required?A.AH B.MD5C.PSK D.

ESP

Answer: D

QUESTION 14

What is the function of the command switchport trunk native vlan 999 on a…(此处文字不清楚).?A.It designates VLAN 999 for untagged traffic.

B.It blocks VLAN 999 traffic from passing on the trunk.

C.It creates a VLAN 999 interface.

It designates VLAN 999 as the default for all unkown tagged traffic.

Answer: D

QUESTION 15

Which command can be used from a PC to verfy the connectivity between host that connect thro…(字体不清)…?

tracert address B.ping address C.arp address

D.traceroute address

Answer: A

QUESTION 16

In which solution is a router ACL used?A.protecting a server frome unauthorized acces

B.controlling path selection,based on the route metric

C.reducing router CPU utilization

filterring packets that are passing through a router

Answer: D

QUESTION 17

Which statement is true, as relates to classful or classless routing?

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A.RIPV1 and OSPF are classless routing protocols.

B.Classful routing protocols send the subnet mask in routing updates.

C.Automatic summarization at classful boundaries can cause problems on disc……

D.EIGRP and OSPF are classful routing protocols and summarize routes by def……

Answer: C

QUESTION 18

A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How can you accomplish this task,using the fewest physical interfaces and without decreasing network performance?A.Add two more FastEthernet interfaces.

B.Add a second router to handle the vlan traffic.

https://www.wendangku.net/doc/425911537.html,e a hub to connect the four vlans with a FastEthernet interface on router.

Implement a router-on-a-stick configuration.

Answer: D

QUESTION 19

Refer to the exhibit.How many broadcast domains are configured on switch2?

A.5

B.20

C.4

D.1

Answer: C

QUESTION 20

What is the effect of using the service password-encryption command?A.nly passwords configured after the command has been entered will be encrypted.B.Only the enable password will be encrypted.

C.Only the enable secret password will be encrypted

D.It will encrypt the secret password and remove the enable secret password from the configuration.

It will encrypt all current and future passwords.

Answer: E

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QUESTION 21

Refer to the exhibit.A technician has installed SwithchB and needs to configure it for remote access from the management workstation connected SwitchA Which set of commands is required to accomplish this task?

A.SwitchB(config)#interface FastEthernet 0/1

SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#no shutdown

B.SwitchB(config)#ip default-gateway 192.168.8.254

SwitchB(config)#interface vlan 1

SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#no shutdown C.SwitchB(config)#interface vlan 1

SwitchB(config)#ip address 192.168.8.252 255.255.255.0

SwitchB(config)#ip default-gateway 192.168.8.254 255.255.255.0SwitchB(config)#no shutdown

D.SwitchB(config)#ip default-network 192.168.8.254

SwitchB(config)#interface vlan 1

SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#no shutdown

Answer: B

QUESTION 22

Refer to the exhibit.The speed of all serial links is E1 and the speed of the all Ethernet links is 100Mb/s.A static route will be established on the Manchester router to the direct traffic toward the internet over the most direct path available.What configuration on the Manchester router will establish a router toward the internet for traffic that originates from workstation on the Manchester LAN?

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A.ip route 0.0.0.0 255.255.255.0 172.16.100.2

B.ip route 0.0.0.0 255.255.255.252 128.107.1.1

C.ip route 0.0.0.0 0.0.0.0 128.107.1.1

D.ip route 0.0.0.0 0.0.0.0 172.16.100.1

E.ip route 0.0.0.0 255.255.255.255 172.16.100.2

F.ip route 0.0.0.0 0.0.0.0 172.16.100.2

Answer: F

QUESTION 23

What Frame Relay mechanism is used to build the map illustrated in the accompanying graphic?

A.inverse multiplexing

B.LMI maping

C.Inverse ARP

D.ARP

E.Proxy ARP

Answer: C

QUESTION 24

Refer to the exhibit.A network engineer is troubleshooting an internet connectivity problem on the computer.What is causing the problem?

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A.wrong DNS server

B.wrong default gateway

C.incorrect IP address

D.incorrect subnet mask

Answer: C

QUESTION 25

How many broadcast domains are shown in the graphic assuming only the default vlan is configured on the switches?

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A.one

B.six

C.twelve

D.two

Answer: A

QUESTION 26

How dose a DHCP server dynamically assign IP address to host?

A.Addresses are allocated after a negotiation between the server and the host to determine the length of

the agreement.

B.Addresses are assigned for a fixed period of time.At the end of period,a newquest for an address must

be made ,and another address is then assigned.

C.Addresses are leased to host.A host will usually keep the same address by periodically contacting the

DHCP sever to renew the lease.

D.Addresses are permanently assigned so that the host uses the same address at all times.Answer: C

QUESTION 27

Which type of EIGRP route entry describes a feasible successor?A. a primary route,stored in the routing table B. a backup route,stored in the routing table C. a backup route,stored in the topology table D.

a primary route,stored in the topology table

Answer: C

QUESTION 28

What is the purpose of the inverse ARP?A.to map a known DLCI to an IP address

B.to map a known IP address to a MAC address

C.to map known SPID to a MACaddress

D.to map a known DLCI to a MAC address

E.to map a known IP address to a SPID.

to map a known MAC address to an IP address

Answer: A

QUESTION 29

What is the default maximum number of equal-cost paths that can be placed into the routing of a cisco OSPF router?A.16B.2

C.unlimited

Answer: D

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QUESTION 30

Which IPV6 routing protocol uses multicast group FF02::9 to send updates?A.RIPng B.OSPFv3C.static

IS-IS for IPv6

Answer: A

QUESTION 31

What are two benefits of using NAT?(choose two)A.NAT protects network security because private networks are not advertised.

B.NAT accelerates the routing process because no modifications are made on the packets.

C.Dynamic NAT facilitates connections from the outside of the network.

D.NAT facilitates end-to-end communication when IPsec is enable.

E.NAT eliminates the need to re-address all host that require extemal access.

NAT conserves addresses through host MAC-level multiplexing.

Answer: AE

QUESTION 32

Which three statements about RSTP are true?(choose three)A.RSTP significantly reduces topology reconverging time after a link failure.B.RSTP expends the STP port roles by adding the alternate and backup roles.C.RSTP port atates are blocking,discarding,learing,or forwarding.D.RSTP also uses the STP proprsal-agreement sequence.

E.RSTP use the same timer-baseed process as STP on point-to-point links.

RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

Answer: ABF

QUESTION 33

Refer to the exhibit.The serial0/0 interface of the Tampa router connects the Oriando router.Which two statements are true about the connection between these two routers?(choose two)

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A.The only device with which the Tampa router will negotiate a data link is the Orlando router.

B.The link is addressed on the *zero*subnet 10.0.0.0 network.

C.The link uses a three-way handshake for authentication.

D.The link uses a two-way handshake for authentication.

E.Data exchanges between the Oriando and Tampa routers are encrypted.

Answer: BC

QUESTION 34

A switch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode

command,followed by a reload of the swith,will reset the VTP management domain name of the switch to a NULL value?A.#vtp domain unset B.#delete vlan.dat C.#no vtp domain D.

#vtp domain null

Answer: B

QUESTION 35

If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20,what is the maximum number of hosts allowed on this subnet?A.4094B.1024C.8190D.

2046

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E.4096Answer: A

QUESTION 36

Which two statements about static NAT translations are true?(choose two)

A.They are always present in the NAT table.

B.They allow connection to be initiated from the outside.

C.They can be configured with access lists, to allow two or more connections to be initiated from the

outside.

D.They require no inside or outside interface markings because addresses are statically defined.Answer: AB

QUESTION 37

Which of these represents an IPv6 link-local address?A.FE08::280e:611:a:f14f:3d69B.FE81::280f:512b:e14f:3d69C.FE80::380e:611a:e14f:3d69D.

FEFE:0345:5f1b::e14d:3d69

Answer: C

QUESTION 38

What are three features of the IPV6 protocol?(choose three)https://www.wendangku.net/doc/425911537.html,plicated header B.plug-and-play C.no broadcasts D.checksums E.optional IPsec F.

autoconfiguration

Answer: BCF

QUESTION 39

Assuming default setting,how can you erase the VTP database of VLANs on a CISCO IOS switch running in VTP server mode?A.Enable VTP pruning

B.From privileged mode ,erase the startup configuration file,then reload.

C.From privileged mode ,erase the vlan date file, then reload.

Cycle the switch power.

Answer: C

QUESTION 40

Refer to the exhibit.which address and mask combination a summary of the routes learned by EIGRP?

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A.192.168.25.0 255.255.255.240

B.192.168.25.16 255.255.255.252

C.192.168.25.0 255.255.255.252

D.192.168.25.28 255.255.255.240

E.192.168.25.16 255.255.255.240

F.192.168.25.28 255.255.255.240

Answer: E

QUESTION 41

Refer to the exhibit A frame on vlan 1on switch s1 is sent to switch s2 when the frame is received on vlan 2,what causes this behavior?

A.trunk mode mismatches

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B.vlans that do not correspond to a unique IP subnet

C.native vlan mismatches

D.allowing only vlan 2 on the destination.Answer: C

QUESTION 42

Refer to the exhibit.The network administrator normally establishes a telnet session with the switch from host A.However,host A is unavailable.The administrator ′s attempt to the switch from host B fails,but pings to the other two hosts are successful.what is the issue?

A.Host B and the switch need to be in the same subnet.

B.The switch needs and appropriate default gateway assigned.

C.The switch interface connected to the router is down.

D.Host B need to be assigned an IP address in vlan 1.

Answer: B

QUESTION 43

What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?A.lowest port MAC address

B.port priority number and MAC address.

C.VTP revision number

D.highest port priority number.

path cost

Answer: E

QUESTION 44

Refer to the exhibit.Router 1 was just successfully rebooted.identify the current OSPF router ID for Router 1.

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A.208.149.23.194

B.220.173.149.10

C.208.149.23.162

D.190.172.32.10

Answer: A

QUESTION 45

Why do large OSPF networks use a hierarchical design?(choose three)A.to confine network instability to single areas of the network.B.to reduce the complexity of router configuration C.to speed up convergence

D.to lower costs by replacing routers with distribution layer switches

E.to decrease latency by increasing bandwidth

to reduce routing overhead

Answer: ACF

QUESTION 46

A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29.which statement explains the reason for this issue?A.The address is a broadcast address B.The Ehernet interface is faulty

C.VLSM-capable routing protocols must be enable first on the router.

This address is a network address.

Answer: D

QUESTION 47

Which two are advantages of static routing when compared to dynamic routing?(choose two)A.Security increases because only the network administrator may change the routing tables.B.Configuration complexity decreases as network size increases.C.Routing updates are automatically sent to neighbors.

D.Route summarization iscompued automatically by the router.

E.Routing traffic load is reduced when used in stub network links

F.An efficient algorithm is used to build routing tables,using automatic updates.

Routing tables adapt automatically to topology changes.

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Answer: AE

QUESTION 48

A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?A.one B.three C.two D.

zero

Answer: C

QUESTION 49

Which command can be a router to verify the layer 3 path to a host?A.

traceroute address B.tracert address C.ssh address D.telnet address

Answer: A

QUESTION 50

Which dose the frame-relay interface-dlc i command configure?A.remote DLCI on the main interface B.local DLCI on the main interface C.local DLCI on the subinterface D.

remote DLCI on the subinterface

Answer: C

QUESTION 51

What is the OSPF default frequency,in seconds,at which a cisco router sends hello packets on a multi-access network?A.10B.40C.30D.

Answer: A

QUESTION 52

Refer to the exhibt.Host A has tested connectivity to a remote network.What is the default gateway for host A?

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A.172.16.182.1

B.192.168.1.1

C.10.16.176.1

D.192.168.1.6

Answer: A

QUESTION 53

Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?

A.transport type all

B.transport output all

C.transport preferred all

D.transport input all

Answer: D

QUESTION 54

Which command shows your active Telnet connections?A.show session

B.show cdp neighbors

C.show users

show queue

Answer: A

QUESTION 55

Which two states are the port states when RSTP has converged?(choose two)A.blocking B.learning C.disabled D.forwarding E.

listening

Answer: AD

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QUESTION 56

There are no boot system commands in a router configuration in NVRAM.What is the fallback sequence that router will use to find an ios during reload?A.Flash,TFTP server,ROM B.Flash,NVRAM,ROM

C.ROM,NVRAM,TFTP server

D.NVRAM,TFTP server,ROM

TFTP server,Flash,NVRAM

Answer: A QUESTION 57

Refer to the graphic.A host is connected to switch port Fa0/3 with a crossover cable.The host and switch have…as shown.However,the port indicator on switch port Fa0/3 is not on,and the host can not

communicate with…to vlan 2 on the same switch.Based on the information given.what is the problem?A.The switch has been assigned an incorrect subnet mask.B.Switch port FA0/3 is not configured as a trunk port C.Switch port FA0/3 has been blocked by STP

D.The switch and the hosts must be in the same subnet

The cable is the wrong type

Answer: E QUESTION 58

Refer to the exhibit.Which user-mode password has just been set?A.Telnet B.Auxiliary C.SSH D.

Console

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CCNA中英对照题库(0-10.pdf概论

CCNA（200-120）题库中英对照整理于：2015年3月31日版本：1.2 声明： ●本题库来源互联网（鸿鹄论坛） ●本题库为英文考试原版左右选择题 ●中文考试为随机抽取英文题的中译版 ●此题库非中文考试题库，而是英文题库手动翻译 ●此题库为手工个人翻译，存在错误和不妥难免，不代表任何官方机构和组织 ●本题库旨在更好的理解英文原本题库，也可以用于中文考试参考用。 ●如发现任何错误或不当之处，可以自行修改，但请更新版本以免混乱，也可致上传者。

QUESTION001 Refer to the exhibit. What will Router1 do when it receives the data frame shown? (Choose three.) 参照下图，这个图示显示了Ｒ１接受到如图所示数据帧的时候会怎么做？ A.Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965. Ｒ１会剥离源ＭＡＣ地址，以0000：0C36.6965代替。 B.Router1 will strip off the source IP address and replace it with the IP address 192.168.40.1. Ｒ１会剥离源IP地址，以192.168.40.1代替。 C.Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320. Ｒ１会剥离源ＭＡＣ地址，以0000：0C36.6965代替。 D.Router1 will strip off the destination IP address and replace it with the IP address of 192.168.40.1. Ｒ１会剥离目的IP地址，以192.168.40.1代替。 E.Router1 will forward the data packet out interface FastEthernet0/1. R1将会从F0/1转发这个数据包。 F. Router1 will forward the data packet out interface FastEthernet0/2. R1将会从F0/2转发这个数据包数据传输过程中，IP 地址不变，但是在不同的网段中，MAC 地址要根据设备的具体情况而发生改变。在不同网络中，依靠 IP 地址定位，在同一网络中，依靠 MAC 地址定位。 QUESTION002

思科认证CCNP经典试题

第一部分填空题 1、在Cisco体系的IGP协议中，RIP的A-D管理距离是，EIGRP的域内A-D管理距离是，EIGRP的域外A-D管理距离是OSPF的A-D管理距离是。BGP 从EBGP学习到的路由学到路由的A-D管理距离是; BGP从IBGP学习到的路由学到路由的A-D管理距离是。 2、BGP的默认MED值为；其中MED越越优选被用于选路；BGP从邻居哪里学到的权重为；BGP自己本路由产生的路由（始发路由）产生权重是；BGP 的默认本地优先级为：。 3、BGP的邻居分为和。 4、OSPF在那个区域（有区域0，区域1，区域2）广播多路访问（比如以太网，没有出现外部网络），在区域0可以看到类LSA。如果想看到2类LSA，必须在网络类型；在NSSA区域可以看到类LSA，在纯粹的NASS区域内是否有5类LSA？（回答是或者否）。 5、HSRP包括哪六种状态？ 6、OSPF在MA网络链路类型的HELLO报文作用？（3种） 7、IPV6的本地链路地址是；本地站点地址是。（没有/10的写法） 8、在选择STP的角色（身份）有哪些？，默认STP的收敛时间为。配置了portfast后，收敛时间会小于。 9、OSPF发送hello包的组播地址是，EIGRP组播地址是；HSRP发送hello包组播地址是；VRRP发送hello 包的组播地址是。 10、目前以太通道最多可以使用条物理线缆逻辑捆绑成一个以太通道接口？形成以太通道方式有。 11、BGP在EBGP中使用属性避免AS间的环路（确保无环），该属性属于BGP的必遵属性，其中还有哪两个是BGP公认必遵属性为和。第二部分选择 1、在对基于CEF的多层交换（MLS）进行排错的时候，例如解决无法到达特定的IP目标等问题，首先需要先查看哪两张表去验证错误？（） A、IP路由表和路由表 B、IP路由和CEF邻接关系表 C、TCAM中的IP CEF FIB和邻接关系表 D、IP路由表和ARP表 2、EIGRP位一个混合距离矢量协议，在METRIC值中使用K1-K5五个K值，默认情况下，使用K值分别是（） A、K1，K2 B K3,K4 C、K1，K5 D、K1，K3 3、OSPF中router-id能标识一台设备的身份，下面说法正确的是（） A、先选举手工配置，然后选择设备loopback地址大的，在选运行了宣告进OSPF最大的物理接口最大的地址。 B、先选择设备loopback地址大的，然后选举手工配置，在选运行了宣告进OSPF最大的物理接口最大的地址。 C、先选举手工配置，然后选择设备loopback地址大的，在选设备的物理接口UP最大的地址。 D、在ipv6中router-id选择跟ipv4一样，当router-ID必须是ipv6地址。 4、在下列哪些情况下，管理员在多层交换机配置命令IP routing？（） A、当Svi正在为某个给定的VLAN提供交换机IP连接时。

CCNA期末考试试题

1、要求: (1)VTP域名为benet;密码为123;启用修剪; (2)配置2台3层交换机为VTP的server模式;配置2层交换机为VTP的client模式; (3)设置SW-3L-1是VLAN 2－6的生成树根网桥;设置SW-3L-2是VLAN 7－11的生成树根网桥;在2层交换机上配置速端口与上行速链路; (4)配置路由器接口的IP地址;配置路由器启动RIP路由协议;配置路由器上的默认路由，指向10.1.1.1/24; (5)在3层交换机上配置各VLAN的IP地址;配置两台3层交换机之间的 EthernetChannel; (6)配置3层交换机的路由接口;在3层交换机上配置RIP路由协议（1）（2）

○1SW1-3L 配置vtp域名benetpassword 123 Server模式 SW2-3L同样配置 ○2SW1-3L启用修剪SW2-3L同样配置 ○3SW3-2L配置vtp的client模式、SW4-2L、SW5-3L、SW6-3L相同配置（3）设置SW-3L-1是VLAN 2－6的生成树根网桥;设置SW-3L-2是VLAN 7－11的生成树根网桥;在2层交换机上配置速端口与上行速链路; ○1SW-3L-1是VLAN 2－6的生成树根网桥;; ○2设置SW-3L-2是VLAN 7－11的生成树根网桥

○3SW3-2L配置速端口与上行链路，SW4-2L、SW5-2L 、SW6-2L上同样配置（4）配置路由器接口的IP地址;配置路由器启动RIP路由协议;配置路由器上的默认路由，指向10.1.1.1/24 ○1路由器上配置ip地址 ○2路由器上配置默认路由和RIP

CCNA试题

CCNA强化一、单项选择题： 1、介质100BaseT的最大传输距离是：(b ) A: 10m B:100m C:1000m D:500m 2、路由器下，由一般用户模式进入特权用户模式的命令是：（c ）A：enable B:config C: interface D:router 3、哪个命令可以成功测试网络：( b ) A： Router> ping 192.5.5.0 B： Router# ping 192.5.5.30 C： Router> ping 192.5.5.256 D： Router# ping 192.5.5.255 4、介质工作在OSI的哪一层（ a ） A：物理层 B：数据链路层 C：网络层 D：传输层 5、100baseT的速率是( c )Mbit/s A: 1 B:10 C:100 D:1000 6、在启用EIGRP协议时，所需要的参数是：( c ) A:网络掩码 B:子网号 C:自治系统号 D:跳数 7、基本IP访问权限表的表号范围是：(b ) A: 1—100 B:1-99 C:100-199 D:800-899 8、查看路由表的命令是：( c ) A:show interface B:show run C:show ip route D:show table 9、工作在OSI第三层的设备是：( b )

A:网卡 B:路由器 C: 交换机 D:集线器 10、OSI第二层数据封装完成后的名称是：( c ) A:比特 B: 包 C:帧 D:段 11、为了禁止网络210.93.105.0 ftp到网络223.8.151.0，允许其他信息传输，则能实现该功能的选项是：( d ) A：access-list 1 deny 210.93.105.0.0.0.0.0.0 B： access-list 100 deny tcp 210.93.105.0 0.0.0.255 223.8.151.0 0.0.0.255 eq ftp C：access-list 100 permit ip any any D：access-list 100 deny tcp 210.93.105.0 0.0.0.255 223.8.151.0 0.0.0.255 eq ftp access-list 100 permit ip any any 12、路由器下“特权用户模式”的标识符是：( c ) A: > B:! C:# D: (config-if)# 13、把指定端口添加到VLAN的命令是：( d ) A: vlan B: vlan-membership C: vtp D:switchport 14、交换机工作在OSI七层模型的哪一层(b ) A:物理层 B:数据链路层 C:网络层 D:传输层 15、在OSI七层模型中，介质工作在哪一层( c ) A:传输层 B:会话层 C:物理层 D:应用层 16、交换机转发数据到目的地依靠( b )

(完整版)思科题库2(修改)

1：PDU 封装的正确顺序是什么？ 2：建立融合网络有何用途？

3：请参见图示。哪个区域最有可能是图中所示的公司网络的外联网？ 4：主机正在访问远程网络的FTP 服务器。中间网络设备在此对话中起到哪三个作用？（请选择三项。）

5一位家庭用户想要使用能够在普通电话线路上提供快速数字传输的ISP 连接。应选择哪种ISP 连接类型？ 6：在学校网络上，学生可以浏览网页、搜索图书馆数据库，还可以和日本的姊妹学校一起参加音频会议。如果使用QoS 为网络流量排列优先顺序，这些流量的优先级从高到低如何排列？ 7：管理员在发出ping命令之后在交换机上使用Ctrl-Shift-6 键组合。使用这些按键有什么用途？

8：OSI 模型的物理层有什么重要功能？ 9：下列哪个程序用于降低铜缆中的串扰影响？ 10：如果收到的帧的目的MAC 地址不在MAC 表中，第2 层交换机将执行什么操作？ 11：一名技术人员使用ping 127.0.0.1命令。该技术人员在测试什么内容？

12：交换机上的auto-MDIX 功能是什么？ 13：在传输过程中，IPv4 数据包报头中的哪个字段通常会保持不变？ 14：路由器将按哪个默认顺序搜索启动配置信息？ 15：当有多个可用路由时，路由器使用哪项参数来选择到达目的网络的路径？

16：在正常操作中，大多数思科路由器从哪个位置运行IOS？ 17：哪种连接能为思科路由器提供加密的安全CLI 会话？ 18：为了能够远程管理交换机，管理员可用以下哪条命令配置远程访问地址？ 19：下列哪个PC 地址在PC 移动到其他网络时也不会改变？

ccna考试题库101-125

QUESTION 101 Refer to the exhibit. The switch in the graphic has a default configuration and the MAC table is fully populated. In addition, this network is operating properly. The graphic represents selected header information in a frame leaving host A. What can be concluded from this information A. The MAC address of host A is B. The router will forward the packet in this frame to the Internet. C. The switch will only forward this frame to the attached router interface. D. All devices in this LAN except host A will pass the packet to Layer 3. QUESTION 102 What is an appropriate use of a default route A. to provide routing to a local web server B. to provide routing from an ISP to a stub network C. to provide routing that will override the configured dynamic routing protocol D. to provide routing to a destination that is not specified in the routing table and which is outside the local network QUESTION 103 Refer to the exhibit. A junior network engineer has prepared the exhibited configuration file. What two statements are true of the planned configuration for interface fa0/1 (Choose two.)

CCNA测试题

CCNA测试题 1、Which of the following host addresses are members of networks that can be routed across the public Internet?(Choose three.) A. 10.172.13.65 B. 172.16.223.125 C. 172.64.12.29 D. 192.168.23.252 E. 198.234.12.95 F. 212.193.48.254 2、What is a global command? A. a command that is available in every release of IOS, regardless of the version or deployment status B. a command that can be entered in any configuration mode C. a command that is universal in application and supports all protocols D. a command that is implemented in all foreign and domestic IOS versions E. a command that is set once and affects the entire router 3、All WAN links inside the ABC University network use PPP with CHAP for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network? A. show CHAP authentication B. show interface serial0 C. debug PPP authentication D. debug CHAP authentication E. show ppp authentication chap 4、The RIP network shown in the graphic has been fully operational for two days. Each routing table is complete.Which networks will be included in the next routing update from the Apples router to the Pears router? A. A,B,C,D,E,F B. A,C C. A,B,C D. B,D E. D,E,F

CCNA基础测试题及答案

CCNA试题 1.What is the correct order for the OSI model? B P=Presentation, S=Session, D=Datalink, Ph=Physical, T=Transport, A= Application, N=Network A. P S A PH D N T B. A P S T N D PH C. PH D N T A S P D. P S A T N D PH It is crucial you not only memorize this and know what each layer does. 2. What is encapsulation? C A. Putting the header on an incoming frame B. Putting a header on an incoming segment C. Putting a header on an outgoing frame D. Putting a header on an outgoing bit This also includes trailers and can be put on segments, packets, and frames. 3. Which layer is most concerned with user applications? A A. Application B. Presentation C. Network D. Physical 4. Which of the following is de-encapsulation?A A. Stripping the header from a frame B. Putting a header on a segment C. Putting a header on a frame D. Stripping a frame from a link This also includes trailers as in question 2. 5. What layer converts data into segments? C A. Application B. Presentation C. Transport D. Physical 6. What layer converts data into Packets? A A. Network B. Application C. Physical D. Data Link 7. What layer converts data into Frames? C A. Application B. Physical C. Data Link D. Transport 8. What layer converts data into bits? D

CCNA最新题库

270. EIGRP After adding RTR_2 router, no routing updates are being exchanged between RTR_1 and the new location. All other inter connectivity and internet access for the existing locations of the company are working properly. The task is to identify the fault(s) and correct the router configuration to provide full connectivity between the routers. Access to the router CLI can be gained by clicking on the appropriate host. All passwords on all routers are cisco . IP addresses are listed in the chart below.

Answer: RTR_A#show run ! ! interface FastEthernet0/0 ip address 192.168.60.97 255.255.255.240 ! interface FastEthernet0/1 ip address 192.168.60.113 255.255.255.240 ! interface Serial0/0 ip address 192.168.36.14 255.255.255.252 clockrate 64000 ! router eigrp 212 network 192.168.36.0 network 192.168.60.0 no auto-summary ! RTR_A#show ip route 192.168.36.0/30 is subnetted, 1 subnets C 192.168.36.12 is directly connected, Serial 0/0 192.168.60.0/24 is variably subnetted, 5 subnets, 2 masks C 192.168.60.96/28 is directly connected, FastEthernet0/0 C 192.168.60.112/28 is directly connected, FastEthernet0/1 D 192.168.60.128/28 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0 D 192.168.60.144/28 [ 90/21026560 ] via 192.168.36.13, 00:00:57, Serial 0/0

2019年思科ITE 3,4,5,6章考试原题及答案_共12页

清洁计算机内部可以减少以下哪种负面环境因素？灰尘在清洁计算机机箱内部时，直接喷射压缩空气容易损坏下列哪种组件？风扇在生产车间，一个家具工厂用笔记本电脑来实现进程监控和报告。生产车间的环境温度大约为27 摄氏度（80 华氏度）。湿度相当高，大约为70%。风扇安装在通风口顶部。这里的木屑灰尘非常多。以下哪个条件最可能对在这一环境中使用的笔记本电脑产生不利影响？灰尘蔬菜罐头工厂使用笔记本电脑来监控生产线。生产环境的环境温度大约是24 摄氏度（75 华氏度）。湿度约为30%。由于装罐设备的使用，因此噪音很高。笔记本电脑放在一个木箱中，木箱三面距离笔记本电脑较近。以下哪个因素最可能对在这一环境中使用的笔记本电脑产生不利影响？放置笔记本电脑的木箱科考队正在用笔记本电脑工作。科学家们工作地点的温度范围为-13 华氏度（-25 摄氏度）到80 华氏度（27 摄氏度）。湿度约为40%。噪声水平较低，但地形崎岖，风速可达每小时45英里（每小时72公里）。在需要时，科学家们会停下脚步，用笔记本电脑输入数据。下列哪一项条件最有可能对于在此环境下使用的笔记本电脑造成负面影响？温度以下哪一项是制定预防性维护计划的一部分？记录每项维护任务的详细信息和频率技术人员正在施工现场执行PC硬件维护。作为预防性维护计划的一部分，技术人员应该执行什么任务？进气风扇除尘。以下哪项任务应作为硬件维护例行程序的一部分？检查并固定任何松动的电缆。在测试导致某个问题的若干可能原因时，应该首先测试哪类原因？最容易最明显的原因在解决计算机问题时可以使用下列哪两项物品来帮助制定行动计划？（选择两项。）计算机手册计算机维修历史记录日志为客户排除计算机故障之前应该备份哪两类数据？（选择两项。） Internet Explorer收藏夹文件客户创建的文档

CCNA考试题库中英文翻译版及答案

CCNA考试题库中英文翻译版及答案1[1] 1. What are two reasons that a network administrator would use access lists? (Choose two.) 1.出于哪两种理由，网络管理员会使用访问列表? A. to control vty access into a router A.控制通过VTY访问路由器 B. to control broadcast traffic through a router B.控制广播流量穿越路由器 2.一个默认的帧中继WAN被分类为哪种物理网络类型? A. point-to-point A.点到点 B. broadcast multi-access B.广播多路访问 C. nonbroadcast multi-access C.非广播多路访问 D. nonbroadcast multipoint D.非广播多点 E. broadcast point-to-multipoint E.广播点到多点 Answer: C 3. A single 802.11g access point has been configured and installed in the center of a squar A few wireless users are experiencing slow performance and drops while most users are o

at peak efficiency. What are three likely causes of this problem? (Choose three.) 3.一个802.11接入点被部署在一个方形办公室的中央，当大多数用户在大流量传输数一些无线用户发现无线网络变得缓慢和出现丢包 A. mismatched TKIP encryption B. null SSID C. cordless phones D. mismatched SSID E. metal file cabinets F. antenna type or direction Answer: CEF 4. Refer to the exhibit. How many broadcast domains exist in the exhibited topology? 根据下图，图中的拓扑中存在多少个广播域? A. one A.1 B. two B.2 C. three C.3

思科网院考试题库

思科网院考试题库 CCNA1 - Module 2 CCNA1 - Module 2 1 Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.) Network Transport Physical** Data Link** Session 2 What is a primary function of the trailer information added by the data link layer encapsulation? supports error detection** ensures ordered arrival of data provides delivery to correct destination identifies the devices on the local network assists intermediary devices with processing and path selection 3 During the encapsulation process, what occurs at the data link layer? No address is added. The logical address is added. The physical address is added.** The process port number is added.

CCNA四考试答案

第1章考试 1 一家拥有10 名员工的小型公司使用单个LAN 在计算机之间共享信息。哪种类型的In 连接适合此公司由当地电话服务提供商提供的拨号连接能够使公司方便且安全地连接员工的虚拟专用网络通过当地服务提供商建立的私有专用线路通过当地服务提供商提供的宽带服务（如DSL）答案：4 解析：对于这种小型办公室，比较适合通过被称为数字用户线路(DSL) 的常见宽带服务实现Internet 连接，这种服务由当地的电话服务提供商提供。由于员工人数很少，带宽的问题并不突出。如果公司较大，在远程站点有分支机构，则专用线路会更加适合。如果公司员工需要通过Internet 与公司联系，则采用虚拟专用网。 2 哪种网络情况需要使用WAN 员工工作站需要获取动态分配的IP 地址。员工在出差时需要通过VPN 连接到公司电子邮件服务器。分支机构的员工需要与同一园区网络上的另一座建筑物内的公司总部共享文件。员工需要访问托管在其建筑物内DMZ 中的公司Web 服务器上的网页。答案：2 解析：当出差的员工需要通过WAN 连接到公司电子邮件服务器时，VPN 将通过WAN 连接在员工笔记本电脑与公司网络之间创建一个安全隧道。通过DHCP 获取动态IP 地址是LAN 通信的功能。在企业园区的不同建筑物之间共享文件可通过LAN 基础设施来实现。DMZ 是企业LAN 基础设施内一个受保护的网络。 3 以下哪项描述了WAN 的特征 WAN 和LAN 在同一地理范围内运行，但有串行链路。 WAN 网络归运营商所有。所有串行链路均被视为WAN 连接。 WAN 可提供到园区主干网的终端用户网络连接。答案：2 解析：WAN 可用于将企业LAN 互连到远程分支机构站点LAN 和远程工作人员站点。WAN 归运营商所有。虽然WAN 连接一般通过串行接口实现，但并不是所有串行链路均连接至WAN。LAN（而非WAN）可在组织中提供终端用户网络连接。

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思科认证考试（ＣＣＮＡ）考试模拟题集锦(1-71题)及答案 19及答案 1. [OxNx] During a TFTP transfer using Cisco Routers what is the numeric value, in decimal, of the destination port field of the User Datagram Protocol (UDP) header? a) 96 b) 47 c) a random number above 1024 d) 69 e) none of the above 2. [CxNx] What is the standard encapsulation method used by Cisco routers for the Internet Protocol (IP) on it’s Ethernet interfaces? a) SNAP b) ARPA c) NOVELL-ETHER d) DARPA e) Ethernet_802.3 3. [CxNx] What will be the correct command on a Cisco router to set the IP address of an interface assuming you are at the "router(config-if)#" prompt? a) ip address 1.1.1.1 255.255.255.0 b) ip address 1.1.1.1 c) ip 1.1.1.1 d) ip 1.1.1.1 255.255.255.0 e) none of the above 4. [CxNx] Which commands will display the IP addresses of all interfaces on a Cisco Router? (Choose all that apply) a) show ip route b) show ip address c) show ip interface d) show interface e) display ip addresses 5. [CxNx] Which of the following commands will display the contents of the ARP cache of your Cisco router? a) show ip arp cache b) show ip route c) show ip arp d) show arp e) there is no way to display the ARP cache 6. [CxNx] Reverse Address Resolution Protocol (RARP) is the process: a) Where an I P host resolves it’s IP address by broadcasting it’s MAC address to the network and a BOOTP server assigns it an IP address. b) Where an IP host resolves it’s MAC address by broadcasting to the local network it’s IP address. c) Where an IP host tries to resolve the MAC address of a destination by sending a network broadcast. The destination responds to the broadcast with it’s MAC address. d) Where an IP host resolves a destination IP address by sending a broadcast on the local network and the destination host responds with it’s IP address. e)There is no such process. 7. [OxNx] Which of the following applications requires the connection-oriented layer four protocol, TCP? (Choose all that apply)

网络工程师面试题——CCNA

什么是三层交换，说说和路由的区别在那里？三层交换机和路由器都可工作在网络的第三层，根据ip地址进行数据包的转发（或交换），原理上没有太大的区别，这两个名词趋向于统一，我们可以认为三层交换机就是一个多端口的路由器。但是传统的路由器有3个特点：基于CPU的单步时钟处理机制；能够处理复杂的路由算法和协议；主要用于广域网的低速数据链路在第三层交换机中，与路由器有关的第三层路由硬件模块也插接在高速背板/总线上，这种方式使得路由模块可以与需要路由的其他模块间高速的交换数据，从而突破了传统的外接路由器接口速率的限制(10Mbit/s---100Mbit/s)。对路由知识的掌握情况，对方提出了一个开放式的问题：简单说明一下你所了解的路由协议。路由可分为静态&动态路由。静态路由由管理员手动维护；动态路由由路由协议自动维护。路由选择算法的必要步骤：1、向其它路由器传递路由信息；2、接收其它路由器的路由信息； 3、根据收到的路由信息计算出到每个目的网络的最优路径，并由此生成路由选择表； 4、根据网络拓扑的变化及时的做出反应，调整路由生成新的路由选择表，同时把拓扑变化以路由信息的形式向其它路由器宣告。两种主要算法：距离向量法（Distance Vector Routing）和链路状态算法（Link-State Routing）。由此可分为距离矢量（如：RIP、IGRP、EIGRP）&链路状态路由协议（如：OSPF、IS-IS）。路由协议是路由器之间实现路由信息共享的一种机制，它允许路由器之间相互交换和维护各自的路由表。当一台路由器的路由表由于某种原因发生变化时，它需要及时地将这一变化通知与之相连接的其他路由器，以保证数据的正确传递。路由协议不承担网络上终端用户之间的数据传输任务。简单说下OSPF的操作过程 ①路由器发送HELLO报文；②建立邻接关系；③形成链路状态④SPF算法算出最优路径⑤形成路由表 ※OSPF路由协议的基本工作原理，DR、BDR的选举过程，区域的作用及LSA的传输情况（注：对方对OSPF的相关知识提问较细，应着重掌握）。特点是：1、收敛速度快；2、支持无类别的路由表查询、VLSM和超网技术；3、支持等代价的多路负载均衡；4、路由更新传递效率高（区域、组播更新、DR/BDR）；5、根据链路的带宽（cost）进行最优选路。通过发关HELLO报文发现邻居建立邻接关系，通过泛洪LSA形成相同链路状态数据库，运用SPF算法生成路由表。

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