• (Khác biệt giữa các bản)
    n (đ3)
    (acss)
    Dòng 1: Dòng 1:
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    1 A PC can not connect to any remote websites, ping its default gateway, or ping a printer that is functioning properly on the local network segment. Which action will verify that the TCP/IP stack is functioning correctly on this PC?
    		+
    WB2: Router>en Router#config t
    -
    -Use the ping 127.0.0.1 command at the command prompt.
    		+
    Router(config)#hostname WB2
    -
    2 Refer to the exhibit. Which set of devices contains only intermediary devices?
    		+
    WB2(config)#enable password cisco
    -
    -A, B, D, G
    		+
    WB2(config)#enable secret class
    -
    3 Refer to the exhibit. When computer A sends a frame to computer D, what computers receive the frame?
    		+
    WB2(config)#banner motd *Autorized acces only!*
    -
    -only computer D
    		+
    WB2(config)#line vty 0 4
    -
    4.Which password is automatically encrypted when it is created?
    		+
    WB2(config-line)#password cisco
    -
    enable secret
    		+
    WB2(config-line)#login
    -
    5.Which three statements characterize the transport layer protocols? (Choose three.)
    		+
    WB2(config-line)#exit
    -
    -TCP and UDP port numbers are used by application layer protocols.
    		+
    WB2(config)#line console 0
    -
    -TCP uses windowing and sequencing to provide reliable transfer of data.
    		+
    WB2(config-line)#password cisco
    -
    -TCP is a connection-oriented protocol. UDP is a connectionless protocol.
    		+
    WB2(config-line)#login
    -
    6. Which type of media is immune to EMI and RFI? (Choose two.)
    		+
    WB2(config-line)#exit
    -
    100 Base-FX
    		+
    WB2(config)#int fa0/0
    -
    100 Base LX
    		+
    WB2(config-if)#ip add 172.16.100.129 255.255.255.192
    -
    7. Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?
    		+
    WB2(config-if)#no sh
    -
    192.168.254.1
    		+
    WB2(config-if)#exit
    -
    9 .Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?
    		+
    WB2(config)#int fa0/1
    -
    address translation
    		+
    WB2(config-if)#ip add 172.16.100.225 255.255.255.240
    -
    10 .Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B? What action can be preformed to correct the network issue?
    		+
    WB2(config-if)#no sh
    -
    issue the no shutdown command on interface FastEthernet 0/1
    		+
    WB2(config-if)#ip ospf priority 50
    -
    11 .Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)
    		+
    WB2(config-if)#ip ospf hello-interval 20
    -
    172.16.4.63 /26
    		+
    WB2(config-if)#exit
    -
    172.16.4.191 /26
    		+
    WB2(config)#int s0/0/0
    -
    172.16.4.95 /27
    		+
    WB2(config-if)#ip add 172.16.100.242 255.255.255.252
    -
    12 .What are three characteristics of CSMA/CD? (Choose three.)
    		+
    WB2(config-if)#no sh
    -
    -A device listens and waits until the media is not busy before transmitting.
    		+
    WB2(config-if)#exit
    -
    -All of the devices on a segment see data that passes on the network medium.
    		+
    WB2(config)#int lo0
    -
    -After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired.
    		+
    WB2(config-if)#ip add 10.0.0.2 255.255.255.255
    -
    13.In a Cisco IOS device, where is the startup-configuration file stored?
    		+
    WB2(config-if)#exit
    -
    -NVRAM
    		+
    WB2(config)#router ospf 1
    -
    14. A routing issue has occurred in you internetwork. Which of the following type of devices should be examined to isolate this error?
    		+
    WB2(config-router)#network 172.16.100.128 0.0.0.63 area 0
    -
    -router
    		+
    WB2(config-router)#network 172.16.100.240 0.0.0.3 area 0
    -
    15. Which OSI layer protocol does IP rely on to determine whether packets have been lost and to request retransmission?
    		+
    WB2(config-router)#network 172.16.100.224 0.0.0.15 area 0
    -
    -transport
    		+
    WB2(config-router)#passive-interface fa0/0
    -
    16.Due to a security violation, the router passwords must be changed. What information can be learned from the following configuration entries? (Choose two.)
    		+
    WB2(config-router)#exit
    -
    Router(config)# line vty 0 3
    		+
    WB2(config)#exit
    -
    Router(config-line)# password c13c0
    		+
     
    -
    Router(config-line)# login
    		+
    WB1: cisco WB1>en class
    -
    The entries specify four Telnet lines for remote access.
    		+
    WB1# config t
    -
    XX Access will be permitted for Telnet using "c13c0" as the password.
    		+
    WB1(config)#int fa0/1
    -
    17.Which prompt represents the appropriate mode used for the copy running-config startup-config command ?
    		+
    WB1(config-if)#ip add 172.16.100.238 255.255.255.240
    -
    -Switch-6J#
    		+
    WB1(config-if)#no sh
    -
    18.Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through -172.16.159.255?
    		+
    WB1(config-if)#ip ospf priority 100
    -
    -172.16.128.0 255.255.224.0
    		+
    WB1(config-if)#ip ospf hello-interval 20
    -
    19. When must a router serial interface be configured with the clock rate command?
    		+
    WB1(config-if)#exit
    -
    -when the interface is functioning as a DCE device
    		+
    WB1(config)#router ospf 1
    -
    20.When connectionless protocols are implemented at the lower layers of the OSI model, what are usually used to acknowledge the data receipt and request the retransmission of missing data?
    		+
    WB1(config-router)#network 172.16.100.0 0.0.0.127 area 0
    -
    -upper-layer connection-oriented protocols
    		+
    WB1(config-router)#network 172.16.100.244 0.0.0.3 area 0
    -
    21.A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?
    		+
    WB1(config-router)#network 172.16.100.224 0.0.0.15 area 0
    -
    -enable secret
    		+
    WB1(config-router)#passive-interface fa0/0
    -
    22.Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on RouterA?
    		+
     
    -
    a terminal emulation program
    		+
    WHQ:
    -
    23.Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1. Which two statements are true about the application layer protocol that is used to make this connection? (Choose two.)
    		+
    ---> Middels WB2 <---
    -
    -The connection type is called a VTY session.
    		+
    -
    -The application name is the same for the service, protocol, and client.
    		+
    WB2#telnet 172.16.100.241 cisco
    -
    25.Refer to the exhibit. What two facts can be determined about the exhibited topology? (Choose two.)
    		+
    WHQ>en class WHQ#config t
    -
    A single broadcast domain is present
    		+
    WHQ(config)#ip route 192.168.0.0 255.255.254.0 192.0.0.2
    -
    Five collision domains exist.
    		+
    WHQ(config)#ip route 0.0.0.0 0.0.0.0 serial0/1/0
    -
    26. Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?
    		+
    WHQ(config)#router ospf 1
    -
    -IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
    		+
    WHQ(config-router)#network 172.16.100.240 0.0.0.3 area 0
    -
    27. Refer to the exhibit. Cable 1 and cable 2 have the ends wired for specific physical layer requirements. The table lists each segment by number and the cable which has been installed by the network technician between the network components on that segment. From the data given, which segments have the correct cable installed? (Choose three.)
    		+
    WHQ(config-router)#network 172.16.100.244 0.0.0.3 area 0
    -
    XX segment1
    		+
    WHQ(config-router)#passive-interface S0/1/0
    -
    XX segment3
    		+
    WHQ(config-router)#passive-interface s0/1/1
    -
    XX segment4
    		+
    WHQ(config-router)#default-information originate
    -
    28. What is true regarding network layer addressing? (Choose three.)
    		+
    WHQ(config-router)#exit
    -
    XX heirarchical
    		+
    WHQ(config)#exit
    -
    XX uniquely identifies each host
    		+
    WHQ#exit
    -
    XX contains a network portion
    		+
     
    -
    29.Refer to the exhibit. A router, whose table is shown, receives a packet that is destined for 192.168.1.4. How will router treat the packet?
    		+
    WPC2:
    -
    XX The packet will be forwarded to the destination host.
    		+
    Ip adres: 172.16.100.190
    -
    30. Refer to the exhibit. Which two statements describe the information that is represented in the header? (Choose two.)
    		+
    Subnetmasker: 255.255.255.192
    -
    XX The destination port indicates a Telnet session.
    		+
    Default Gateway: 172.16.100.129
    -
    XX The return segment will contain a source port of 23.
    		+
    -
    31.Refer to the exhibit. What is the correct destination socket number for a web page request from Host A to the web server?
    		+
    -
    XX 198.133.219.25:80
    		+
    -
    32.During the encapsulation process, which identifiers are added at the transport layer?
    		+
    -
    XX two applications communicating the data
    		+
    -
    33.Refer to the exhibit. A student has wired each end of a CAT 5e cable as shown. What is the result? (Choose two.)
    		+
    -
    XX The cable is suitable for use as a Fast Ethernet crossover.
    		+
    -
    XX The cable is suitable for use between two 100 Mbps Auto-MDIX capable switches.
    		+
    -
    34.Refer to the exhibit. Assume all devices are using default configurations. How many subnets are required to address the topology that is shown?
    		+
    -
    XX 3
    		+
    -
    35. Refer to the exhibit. On the basis of the IP configuration that is shown, what is the reason that Host A and Host B are unable to communicate outside the local network?
    		+
    -
    XX The gateway address was assigned a broadcast address.
    		+
    -
    36.Refer to the exhibit. Each media link is labeled. What type of cable should be used to connect the different devices?
    		+
    -
    XX Connection 1 - straight-through cable
    		+
    -
    Connection 2 - crossover cable
    		+
    -
    Connection 3 - straight-through cable
    		+
    -
    37.Refer to the exhibit. What does the IP address 192.168.33.2 represent?
    		+
    -
    XX The host's primary domain name server.
    		+
    -
    38. Refer to the exhibit. What two facts can be determined from the information that is given? (Choose two.)
    		+
    -
    XX The destination port indicates that an HTTP session has been initiated.
    		+
    -
    XX The data listed is associated with the transport layer.
    		+
    -
    39. Which of the following are the address ranges of the private IP addresses? (Choose three.)
    		+
    -
    XX 10.0.0.0 to 10.255.255.255
    		+
    -
    XX 172.16.0.0 to 172.31.255.255
    		+
    -
    XX 192.168.0.0 to 192.168.255.255
    		+
    -
    40. Which two functions of the OSI model occur at layer two? (Choose two.)
    		+
    -
    XX physical addressing
    		+
    -
    XX media access control
    		+
    -
    41. Which range of port numbers are reserved for services that are commonly used by applications that run on servers?
    		+
    -
    XX 0 to 1023
    		+
    -
    42. As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?
    		+
    -
    XX 255.255.254.0
    		+
    -
    43. Refer to the exhibit. The tracert command is initiated from PC1 to the destination PC4. Which device will send a response to the initial packet from PC1?
    		+
    -
    XX London
    		+
    -
    44. Refer to the exhibit. Host A is transmitting data to host B. What addresses will host A use to for the destination IP and MAC addresses in this communication?
    		+
    -
    XX Destination MAC: EEEE:EEEE:EEEE Destination IP: 172.22.0.75
    		+
    -
    45. Refer to the exhibit. Which logical topology best describes the exhibited network?
    		+
    -
    XX multiaccess
    		+
    -
    46. Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?
    		+
    -
    XX subnetmask incorrectly entered
    		+
    -
    47. Refer to the exhibit. With the router running NAT, what IP addresses can be applied to the computer to allow access to the Internet? (Choose three.)
    		+
    -
    XX 192.168.18.49
    		+
    -
    XX 192.168.18.52
    		+
    -
    XX 192.168.18.59
    		+
    -
    48.Refer to the exhibit. What three statements are true about the IP configuration that is shown? (Choose three.)
    		+
    -
    XXThe address that is assigned to the computer represents private addressing.
    		+
    -
    XX The computer is unable to communicate outside of the local network.
    		+
    -
    XX The prefix of the computer address is /27.
    		+
    -
    this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?
    		+
    -
    leaving Dallas
    		+
    -
    50.Which of the following OSI layers offers reliable, connection-oriented data communication services?
    		+
    -
    transport
    		+

    23:25, ngày 20 tháng 6 năm 2013

    WB2: Router>en Router#config t Router(config)#hostname WB2 WB2(config)#enable password cisco WB2(config)#enable secret class WB2(config)#banner motd *Autorized acces only!* WB2(config)#line vty 0 4 WB2(config-line)#password cisco WB2(config-line)#login WB2(config-line)#exit WB2(config)#line console 0 WB2(config-line)#password cisco WB2(config-line)#login WB2(config-line)#exit WB2(config)#int fa0/0 WB2(config-if)#ip add 172.16.100.129 255.255.255.192 WB2(config-if)#no sh WB2(config-if)#exit WB2(config)#int fa0/1 WB2(config-if)#ip add 172.16.100.225 255.255.255.240 WB2(config-if)#no sh WB2(config-if)#ip ospf priority 50 WB2(config-if)#ip ospf hello-interval 20 WB2(config-if)#exit WB2(config)#int s0/0/0 WB2(config-if)#ip add 172.16.100.242 255.255.255.252 WB2(config-if)#no sh WB2(config-if)#exit WB2(config)#int lo0 WB2(config-if)#ip add 10.0.0.2 255.255.255.255 WB2(config-if)#exit WB2(config)#router ospf 1 WB2(config-router)#network 172.16.100.128 0.0.0.63 area 0 WB2(config-router)#network 172.16.100.240 0.0.0.3 area 0 WB2(config-router)#network 172.16.100.224 0.0.0.15 area 0 WB2(config-router)#passive-interface fa0/0 WB2(config-router)#exit WB2(config)#exit

    WB1: cisco WB1>en class WB1# config t WB1(config)#int fa0/1 WB1(config-if)#ip add 172.16.100.238 255.255.255.240 WB1(config-if)#no sh WB1(config-if)#ip ospf priority 100 WB1(config-if)#ip ospf hello-interval 20 WB1(config-if)#exit WB1(config)#router ospf 1 WB1(config-router)#network 172.16.100.0 0.0.0.127 area 0 WB1(config-router)#network 172.16.100.244 0.0.0.3 area 0 WB1(config-router)#network 172.16.100.224 0.0.0.15 area 0 WB1(config-router)#passive-interface fa0/0

    WHQ: ---> Middels WB2 <---

    WB2#telnet 172.16.100.241 cisco WHQ>en class WHQ#config t WHQ(config)#ip route 192.168.0.0 255.255.254.0 192.0.0.2 WHQ(config)#ip route 0.0.0.0 0.0.0.0 serial0/1/0 WHQ(config)#router ospf 1 WHQ(config-router)#network 172.16.100.240 0.0.0.3 area 0 WHQ(config-router)#network 172.16.100.244 0.0.0.3 area 0 WHQ(config-router)#passive-interface S0/1/0 WHQ(config-router)#passive-interface s0/1/1 WHQ(config-router)#default-information originate WHQ(config-router)#exit WHQ(config)#exit WHQ#exit

    WPC2: Ip adres: 172.16.100.190 Subnetmasker: 255.255.255.192 Default Gateway: 172.16.100.129

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