Saturday, 1 June 2013

100% SCORE - CCNA FINAL EXAMS (ACCESSING THE WAN)

CCNA Final Exams (Get 100% Score)
Take Assessment - EWAN Final Exam - CCNA Exploration: Accessing the WAN (Version 4.0)
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Which two statements are true about creating and applying access lists? (Choose two.)
There is an implicit deny at the end of all access lists.
One access list per port, per protocol, per direction is permitted.
Access list entries should filter in the order from general to specific.
The term "inbound" refers to traffic that enters the network from the router interface where the ACL is applied.
Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to the destination.
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Refer to the exhibit. The corporate network that is shown has been assigned network 172.16.128.0/19 for use at branch office LANs. If VLSM is used, what mask should be used for addressing hosts at Branch4 with minimal waste from unused addresses?
/19
/20
/21
/22
/23
/24
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What is a common use of a TFTP server?
to allow access to restricted system resources
to detect attacks against a network and send logs to a management console
to provide active defense mechanisms that prevent attacks against the network
to perform IOS image and configuration uploads and downloads over the network
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Refer to the exhibit.  EastSW is a replacement switch borrowed from another branch.   The network technician configures the replacement off-line making many VTP and VLAN modifications.  Just prior to attaching the replacement to the live network, the technician modifies it to be a VTP client.  EastSW is then attached to the network. The technician assumes that the correct VLAN information will be propagated from WestSW as soon as the two switches are directly connected. What is the reason WestSW did not send a VLAN update to EastSW? 
The VTP server and VTP client are using different management VLANs.
The VTP server and VTP client have the same configuration revision number.
The VTP client should have been configured as a VTP server.
WestSW should have been reloaded before connecting EastSW into the network.
EastSW has fewer VLANs than WestSW.
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What major benefit does Cisco HDLC provide that ISO standard HDLC lacks?
flow control
error control
multiprotocol support
cyclic redundancy checks
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Refer to the exhibit. Results of the show vlan and show vtp status commands for switches S1 and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11 missing from S2?
There is a Layer 2 loop.
The VTP domain names do not match.
Only one switch can be in server mode.
S2 has a higher spanning-tree priority for VLAN 11 than S1 does.
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What does an access control list determine when used with NAT on a Cisco router?
addresses that are to be translated
addresses that are assigned to a NAT pool
addresses that are allowed out of the router
addresses that are accessible from the inside network
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Refer to the exhibit. Based on the output as shown, which two statements correctly define how the router will treat Telnet traffic that comes into interface FastEthernet 0/1? (Choose two).
Telnet to 172.16.10.0/24 is denied.
Telnet to 172.16.20.0/24 is denied.
Telnet to 172.16.0.0/24 is permitted.
Telnet to 172.16.10.0/24 is permitted.
Telnet to 172.16.20.0/24 is permitted.
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Refer to the exhibit. A network administrator is trying to backup the IOS software on R1 to the TFTP server. He receives the error message that is shown in the exhibit, and cannot ping the TFTP server from R1. What is an action that can help to isolate this problem?
Use correct source file name in the command.
Verify that the TFTP server software is running.
Make sure that there is enough room on the TFTP server for the backup.
Check that R1 has a route to the network where the TFTP server resides.
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Refer to the exhibit. Which configuration command would result in the output in the exhibit?
ip nat inside source static 10.1.200.254 172.16.76.3
ip nat inside source static 10.1.200.254 192.168.0.10
ip nat inside source static 172.16.76.3 10.1.200.254
ip nat inside source static 172.16.76.3 192.168.0.10
ip nat inside source static 192.168.0.10 172.16.76.3
ip nat inside source static 192.168.0.10 10.1.200.254
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Refer to the exhibit. A technician issues the show interface s0/0/0 command on R1 while troubleshooting a network problem. What two conclusions can be determined by from the output shown? (Choose two.)
The bandwidth has been set to the value of a T1 line.
This interface should be configured for PPP encapsulation.
There is no failure indicated in an OSI Layer 1 or Layer 2.
The physical connection between the two routers has failed.
The IP address of S0/0/0 is invalid, given the subnet mask being used.
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Refer to the exhibit. A packet is being sent from Host A to Host B through the VPN tunnel between R1 and R3. When the packet first arrives at R3, what are the source and destination IP addresses of the packet?
Source 192.168.1.2 - Destination 192.168.4.2
Source 192.168.3.1 - Destination 192.168.3.2
Source 192.168.2.1 - Destination 192.168.3.2
Source 192.168.3.1 - Destination 192.168.4.2
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Refer to the exhibit. WestSW is supposed to send VLAN information to EastSW, but that did not occur. What will force WestSW to send a VLAN update to EastSW?
Change EastSW to be a VTP server.
Reload both WestSW and EastSW at the same time.
Erase the VLAN database on EastSW and reload the switch.
Reset the configuration revision number on EastSW to zero.
Reload EastSW.
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A company is looking for a WAN solution to connect its headquarters site to four remote sites. What are two advantages that dedicated leased lines provide compared to a shared Frame Relay solution? (Choose two.)
reduced jitter
reduced costs
reduced latency
the ability to burst above guaranteed bandwidth
the ability to borrow unused bandwidth from the leased lines of other customers
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A technician is talking to a colleague at a rival company and comparing DSL transfer rates between the two companies. Both companies are in the same city, use the same service provider, and have the same rate/service plan. What is the explanation for why company 1 reports higher download speeds than company 2 reports?
Company 2 downloads larger files than company 1 downloads.
Company 2 must share the connection to the DSLAM with more clients than company 1 shares.
Company 1 is closer to the service provider than is company 2.
Company 1 has a lower volume of POTS traffic than company 2 has.
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Take Assessment - EWAN Final Exam - CCNA Exploration: Accessing the WAN (Version 4.0)
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A company has its headquarters office in Dallas and five branch offices located in New York, Chicago, Los Angeles, Seattle, and Atlanta. WAN links are used for communications among offices in six sites. In planning the WAN links, the network designer is given two requirements: (1) minimize cost and (2) provide a certain level of WAN link reliability with redundant links. Which topology should the network designer recommend?
star
full mesh
hierarchical
partial mesh
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Which statement is true about PAP in the authentication of a PPP session?
PAP uses a two-way handshake.
The password is unique and random.
PAP conducts periodic password challenges.
PAP uses MD5 hashing to keep the password secure.
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Refer to the exhibit. A network administrator is trying to connect R1 remotely to make configuration changes. Based on the exhibited command output, what will be the result when attempting to connect to R1?
failure to connect due to Telnet not being enabled
failure to connect due to incomplete configuration for Telnet
a successful connection and ability to make configuration changes
a successful connection but inability to make configuration changes because of the absence of an enable secret password
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A technician is editing and reapplying ACL 115 to a router, what is the result of adding the command access-list 115 permit tcp any 172.16.0.0 0.0.255.255 established to the ACL when it is reapplied to the router?
All traffic that comes from 172.16.0.0/16 will be allowed.
All TCP traffic that is destined for 172.16.0.0/16 is permitted.
Any SYN packets that are sent to 172.16.0.0/16 will be permitted.
Responses to traffic that originates from the 172.16.0.0/16 network are allowed.
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A network administrator has changed the VLAN configurations on his network switches over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet?
Conduct a performance test and compare with the baseline that was established previously.
Interview departmental secretaries and determine if they think load time for web pages has improved.
Determine performance on the intranet by monitoring load times of company web pages from remote sites.
Compare the hit counts on the company web server for the current week to the values that were recorded in previous weeks.
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Which configuration on the vty lines provides the best security measure for network administrators to remotely access the core routers at headquarters?
















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An issue of response time has recently arisen on an application server. The new release of a software package has also been installed on the server. The configuration of the network has changed recently. To identify the problem, individuals from both teams responsible for the recent changes begin to investigate the source of the problem. Which statement applies to this situation?
Scheduling will be easy if the network and software teams work independently.
It will be difficult to isolate the problem if two teams are implementing changes independently.
Results from changes will be easier to reconcile and document if each team works in isolation.
Only results from the software package should be tested as the network is designed to accommodate the proposed software platform.
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Where does a service provider assume responsibility from a customer for a WAN connection?
local loop
DTE cable on router
demarcation point
demilitarized zone
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Which type of device is located at the central office of a carrier and combines individual DSL connections from multiple users into one high-capacity link to the Internet?
splitter
DSLAM
microfilter
transceiver
layer 3 switch
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Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the DHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is no address pool for 192.168.3.17". What is the problem?
The address 192.168.3.17 address is already in use by Fa0/0.
The pool of addresses for the 192Network pool is configured incorrectly.
The ip helper-address command should be used on the Fa0/0 interface.
The 192.168.3.17 address has not been excluded from the 192Network pool.
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Refer to the exhibit. What happens if the network administrator issues the commands shown when an ACL called Managers already exists on the router?
The commands overwrite the existing Managers ACL.
The commands are added at the end of the existing Managers ACL.
The network administrator receives an error stating that the ACL already exists.
The commands will create a duplicate Managers ACL containing only the new commands being entered.
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Refer to the exhibit. The link between the CTRL and BR_1 routers is configured as shown in the exhibit. Why are the routers unable to establish a PPP session?
The clock rate must be 56000.
The usernames are misconfigured.
The IP addresses are on different subnets.
The clock rate is configured on the wrong end of the link.
The CHAP passwords must be different on the two routers.
Interface serial 0/0/0 on CTRL must connect to interface serial 0/0/1 on BR_1.
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A network administrator determines that falsified routing information is propagating through the network. What action can be used to address this threat?
Update the IOS images.
Change console passwords.
Employ end-user authentication.
Configure routing protocol authentication.
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Which option represents a best practice for applying ACLs?
Named ACLs are less efficient than numbered ACLs.
Standard ACLs should be applied inside the core layer.
ACLs applied to outbound interfaces use fewer router resources.
Extended ACLs should be applied closest to the source that is specified by the ACL.
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Refer to the exhibit. Branch A has a non-Cisco router that is using IETF encapsulation and Branch B has a Cisco router. After the commands that are shown are entered, R1 and R2 fail to establish the PVC. The R2 LMI is Cisco, and the R1 LMI is ANSI. The LMI is successfully established at both locations. Why is the PVC failing?
The PVC to R1 must be point-to-point.
LMI types must match on each end of a PVC.
The frame relay PVCs cannot be established between Cisco and non-Cisco routers.
The IETF parameter is missing from the frame-relay map ip 10.10.10.1 201 command.
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All contents copyright 1992-2012 Cisco Systems, Inc. Privacy Statement  and  Trademarks
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Take Assessment - EWAN Final Exam - CCNA Exploration: Accessing the WAN (Version 4.0)
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What is tunneling?
using digital certificates to ensure that data endpoints are authentic
creating a hash to ensure the integrity of data as it traverses a network
using alternate paths to avoid access control lists and bypass security measures
encapsulating an entire packet within another packet for transmission over a network
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Which statement is true about wildcard masks?
A wildcard mask must be created by inverting the subnet mask.
A wildcard mask performs the same function as a subnet mask.
A wildcard mask of 0.0.0.0 means the address should match exactly.
A wildcard mask uses a "1" to identify IP address bits that must be checked.
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While troubleshooting a PPP link that uses PAP authentication, a network administrator notices an incorrectly configured password in the running configuration. The administrator corrects the error by entering the command ppp pap sent-username ROUTER_NAME password NEW_PASSWORD, but the link still does not come up.

Assuming that the rest of the configuration is correct and that the link has no physical layer problems, what should the administrator do?
Save the configuration to NVRAM.
Shut down the interface then re-enable it.
Generate traffic by pinging the remote router.
Use CHAP to ensure compatibility with the remote router.
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Which WAN connection type uses a fixed-length 53 byte cell for transmitting data?
ATM
X.25
ISDN
Frame Relay
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Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request that enters interface s0/0/0 and is destined for an FTP server at IP address 192.168.1.5?
The router matches the incoming packet to the statement that was created by the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any command, continues comparing the packet to the remaining statements in ACL 201 to ensure that no subsequent statements allow FTP, and then the router drops the packet.
The router reaches the end of ACL 101 without matching a condition and drops the packet because there is no statement that was created by the access-list 101 permit ip any any command.
The router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the packet into the router.
It matches the incoming packet to the statement that was created by the access-list 201 permit ip any any command and allows the packet into the router.
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What is the function of an intrusion detection system on a network?
to restrict access to only authorized users
to detect attacks against a network and send logs to a management console
to prevents attack against the network and provide active defense mechanisms
to detect and prevent most viruses and many Trojan horse applications from spreading in the network
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Refer to the exhibit. Which statement is true about Frame Relay traffic on R1?
Traffic that is mapped to DLCI 201 will exit subinterface Serial 0/0/0.201.
Traffic that exits subinterface Serial 0/0/0.102 is marked with DLCI 201.
Traffic on Serial 0/0/0 is experiencing congestion between R1 and the Frame Switch.
Frames that enter router R1 from a Frame Relay neighbor will have DLCI 201 in the frame header.
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Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP at speeds comparable to DSL and cable?
Wi-Fi
satellite
WiMAX
Metro Ethernet
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Which tunneling technique automatically establishes the connection of IPv6 networks through an IPv4 network without needing to specify manual translations of IPv6 destination addresses to IPv4 destination addresses?
Teredo tunneling
ISATAP tunneling
dynamic 6to4 tunneling
manual IPv6-over-IPv4 tunneling
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Which combination of authentication and Layer 2 protocol should be used to establish a link between a Cisco and a non-Cisco router without sending authentication information in plain text?
CHAP and HDLC
CHAP and PPP
PAP and HDLC
PAP and PPP
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Refer to the exhibit. This serial interface is not functioning correctly. Based on the output shown, what is the most likely cause?
improper LMI type
interface reset
PPP negotiation failure
unplugged cable
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What is the result when the command permit tcp 10.25.132.0 0.0.0.255 any eq smtp is added to a named access control list and applied on the inbound interface of a router?
TCP traffic with a destination to the 10.25.132.0/24 is permitted.
Only Telnet traffic is permitted to the 10.24.132.0/24 network
Ttraffic from 10.25.132.0/24 is permitted to anywhere on using any port.
Traffic using port 25 from the 10.25.132.0/24 is permitted to all destinations.
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Which functions are provided by LCP and NCP as part of the PPP layered architecture?
LCP sets up the PPP connection and its parameters. NCP terminates the PPP connection.
LCP sets up the PPP connection and its parameters. NCP handles higher layer protocol configurations.
LCP includes the link-establishment phase. NCP includes link-maintenance and link-termination phases.
LCP negotiates options for multiple network layer protocols. NCP agrees automatically on encapsulation formats.
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When Frame Relay encapsulation is used, what feature provides flow control and exchanges information about the status of virtual circuits?
LCP
LMI
DLCI
Inverse ARP
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Which option correctly defines the capacity through the local loop guaranteed to a customer by the service provider?
BE
DE
CIR
CBIR
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Take Assessment - EWAN Final Exam - CCNA Exploration: Accessing the WAN (Version 4.0)
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Refer to the exhibit. Company ABC expanded its
business and recently opened a new branch office in another country. IPv6 addresses have been used for the company network. The data servers Server1 and Server2 run applications which require end-to-end functionality, with unmodified packets that are forwarded from the source to the destination. The edge routers R1 and R2 support dual stack configuration. What solution should be deployed at the edge of the company network in order to successfully interconnect both offices?
a new WAN service supporting only IPv6
NAT overload to map inside IPv6 addresses to outside IPv4 address
a manually configured IPv6 tunnel between the edge routers R1 and R2
static NAT to map inside IPv6 addresses of the servers to an outside IPv4 address and dynamic NAT for the rest of the inside IPv6 addresses
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Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?
flow control
error control
authentication
synchronous communication
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A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?
Configure DHCP and static NAT.
Configure dynamic NAT for ten users.
Configure static NAT for all ten users.
Configure dynamic NAT with overload.
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What can a network administrator do to recover from a lost router password?
use the copy tftp: flash: command
boot the router to bootROM mode and enter the b command to load the IOS manually
telnet from another router and issue the show running-config command to view the password
boot the router to ROM monitor mode and configure the router to ignore the startup configuration when it initializes
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Which three physical network problems should be checked when a bottom-up troubleshooting approach has been chosen to troubleshoot network performance? (Choose three.)
cable connectivity
high collision counts
STP failures and loops
address mapping errors
high CPU utilization rates
excess packets that are filtered by the firewall
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