CCNA 4 R&S: Connecting Networks Chapter 1 v5.0 Exam Answers 20141What are two structured engineering principles necessary for successful implementation of a network design? (Choose two.)modularity*securityavailabilityquality of serviceresiliency*2What is an important first consideration when starting to design a network?size of the network*access securityprotocols to be usedtype of applications3Which layer of the Cisco Collaboration Architecture contains unified communications and conference software such as Cisco WebEx Meetings, WebEx Social, Cisco Jabber, and TelePresence?service provider edgeenterprise WANapplications and devices*services module4In which layer of the hierarchical enterprise LAN design model would PoE for VoIP phones and access points be considered?corephysicaldata linkaccess*distribution5Which network module is the fundamental component of a campus design?access-distribution module*services moduledata centerenterprise edge6In a hierarchical network design, which layers may be combined into a collapsed core for smaller networks?core, distribution, and accessdistribution and accesscore and accesscore and distribution*7

Refer to the exhibit. Which type of ISP connectivity to the service provider edge is being used by company A?dual-homeddual-multihomedsingle-homedmultihomed*8What is one advantage to designing networks in building block fashion for large companies?mobilityredundancyincreased network access timefailure isolation*9A network engineer wants to redesign the wireless network and make use of wireless network controllers that manage the many deployed wireless access points. In which network design module of the campus network architecture would the centralized wireless network controllers be found?services*access-distributionenterprise edgedata center10Which two devices would commonly be found at the access layer of the hierarchical enterprise LAN design model? (Choose two.)Layer 3 devicefirewallaccess point*Layer 2 switch*modular switch11Which approach in networking allows for network changes, upgrades, or the introduction of new services in a controlled and staged fashion?modular*network moduleborderlessstatic12

Refer to the exhibit. Which type of Cisco hierarchical LAN design model is used at school site 1?7 layertwo-tier collapsed core*three-tier3 layer13Which three network architectures have been introduced by Cisco to address the emerging technology challenges created by the evolving business models? (Choose three.)Cisco Collaboration*Cisco Data Center*Cisco Borderless*Cisco Enterprise EdgeCisco Enterprise CampusCisco Enterprise Branch14Which Cisco technology allows diverse network devices to connect securely, reliably, and seamlessly to enterprise network resources?Cisco AnyConnect*enterprise edgebuilding distributionservice provider edge15The network design for a college with users at five sites is being developed. Where in the campus network architecture would servers used by all users be located?servicesenterprise edgedata center*access-distribution16What is creating a new challenge for IT departments by changing the border of the enterprise network?tablets*company-owned desktopsenergy costsaccess layer switching17Which network architecture functions through a combination of technologies that include wired, wireless, security, and more?Cisco Borderless*Cisco Enterprise CampusCisco Enterprise EdgeCisco Enterprise Branch18Which network architecture combines individual components to provide a comprehensive solution allowing people to cooperate and contribute to the production of something?Cisco Enterprise Campus ArchitectureCisco Enterprise Branch ArchitectureCisco Borderless Network ArchitectureCisco Collaboration Architecture*19Fill in the blank.Reducing the complexity of network design by dividing a network into smallerareas is an example of a hierarchical network model.20

Place the options in the following order:- not scored coreaccessdistribution21

Place the options in the following order:[+] campus core[+] building distribution[+] data center[#] VPN and remote access[#] DMZ[#] e-commerce[+] Order does not matter within this group.[#] Order does not matter within this group.22Fill in the blank. Use the abbreviation.Under the Cisco Enterprise Edge module, the submodule that provides remote access including authentication and IPS appliances is the VPN and remote access submodule.CCNA 4 R&S: Connecting Networks Chapter 2 v5.0 Exam Answers 2014

CCNA 4 R&S: Connecting Networks Chapter 2 v5.0 Exam Answers 20141.Which WAN technology is cell-based and well suited to carry voice and video traffic?VSATISDNFrame RelayATM*2Which WAN connectivity method would be used in a remote location where there are no service provider networks?VPNWiMAXcableVSAT*3Which network scenario will require the use of a WAN?Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.Employees need to connect to the corporate email server through a VPN while traveling.*Employee workstations need to obtain dynamically assigned IP addresses.Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network.4Which two technologies use the PSTN network to provide an Internet connection? (Choose two.)ATMISDN*Frame RelayMPLSdialup*5Which geographic scope requirement would be considered a distributed WAN scope?regionalone-to-onegloballocalone-to-manymany-to-many*6What are two advantages of packet switching over circuit switching? (Choose two.)A connection through the service provider network is established quickly before communications start.There are fewer delays in the data communications processes.The communication costs are lower.Multiple pairs of nodes can communicate over the same network channel.*A dedicated secure circuit is established between each pair of communicating nodes.7Which connectivity method would be best for a corporate employee who works from home two days a week, but needs secure access to internal corporate databases?

VPN*WiMAXDSLcable8

Place the options in the following order:- not scored CPELocal Loop not scored DTEDCE9Which wireless technology provides Internet access through cellular networks?satellitemunicipal WiFiLTE*WiMAX10What is a requirement of a connectionless packet-switched network?

Full addressing information must be carried in each data packet.*A virtual circuit is created for the duration of the packet delivery.Each packet has to carry only an identifier.The network predetermines the route for a packet.11A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?circuit-switched networkpacket-switched networkMPLSEthernet WAN*12Which WAN technology establishes a dedicated constant point-to-point connection between two sites?ATMFrame Relayleased lines*ISDN13A company needs to interconnect several branch offices across a metropolitan area. The network engineer is seeking a solution that provides high-speed converged traffic, including voice, video, and data on the same network infrastructure. The company also wants easy integration to their existing LAN infrastructure in their office locations. Which technology should be recommended?Frame RelayEthernet WAN*ISDNVSAT14A home user lives within 10 miles (16 kilometers) of the Internet provider network. Which type of technology provides high-speed broadband service with wireless access for this home user?

WiMAX*DSL802.11municipal Wi-Fi15Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)dialup modemaccess serverDSU*CSU*Layer 2 switch16Place the options in the following order:uses traditional video networkuses traditional phone networkset up by a city to provide free Internet accessslow access (upload speed is about one-tenth download speed) not scored -17What is a feature of dense wavelength-division multiplexing (DWDM) technology?It replaces SONET and SDH technologies.It provides Layer 3 support for long distance data communications.It provides a 10 Gb/s multiplexed signal over analog copper telephone lines.It enables bidirectional communications over one strand of fiber.*18What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?municipal Wi-FiVPN*ATMISDN19A small company with 10 employees uses a single LAN to share information between computers. Which type of connection to the Internet would be appropriate for this company?

a broadband service, such as DSL, through their local service provider*a dialup connection that is supplied by their local telephone service providerVirtual Private Networks that would enable the company to connect easily and securely with employeesprivate dedicated lines through their local service provider20What is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?ATMMPLSISDNDWDM*21A new corporation needs a data network that must meet certain requirements. The network must provide a low cost connection to sales people dispersed over a large geographical area. Which two types of WAN infrastructure would meet the requirements? (Choose two.)private infrastructurededicatedpublic infrastructure*Internet*satellite22What are two common high-bandwidth fiber-optic media standards? (Choose two.)ITUANSIATMSDH*SONET*CCNA 4 R&S: Connecting Networks Chapter 3 v5.0 Exam Answers 20141.Which address is used in the Address field of a PPP frame?a single byte of binary 10101010a single byte of binary 11111111*the IP address of the serial interfacea single byte of binary 000000002How does PPP interface with different network layer protocols?by specifying the protocol during link establishment through LCPby encoding the information field in the PPP frameby using separate NCPs*by negotiating with the network layer handler3

Place the options in the following order:CompressionMultilinkMaximum Receive Unit not scored Authentication Protocol4Which command can be used to view the cable type that is attached to a serial interface?Router(config)# show controllers*Router(config)# show ip interfaceRouter(config)# show interfacesRouter(config)# show ip interface brief5In which situation would the use of PAP be preferable to the use of CHAP?when plain text passwords are needed to simulate login at the remote host*when router resources are limitedwhen multilink PPP is usedwhen a network administrator prefers it because of ease of configuration6Which protocol will terminate the PPP link after the exchange of data is complete?IPCPLCP*IPXCPNCP7

Refer to the exhibit. Which statement describes the status of the PPP connection?Both the link-establishment and network-layer phase completed successfully.*Only the network-layer phase completed successfully.Only the link-establishment phase completed successfully.Neither the link-establishment phase nor the network-layer phase completed successfully.8Which is an advantage of using PPP on a serial link instead of HDLC?option for session establishmenthigher speed transmissionoption for authentication*fixed-size frames9Which three statements are true about PPP? (Choose three.)PPP can use synchronous and asynchronous circuits.*PPP carries packets from several network layer protocols in LCPs.PPP can only be used between two Cisco devices.PPP uses LCPs to agree on format options such as authentication, compression, and error detection.*PPP uses LCPs to establish, configure, and test the data link connection.*10When configuring Multilink PPP, where is the IP address for the multilink bundle configured?on a subinterfaceon a physical serial interfaceon a physical Ethernet interfaceon a multilink interface*11Which field marks the beginning and end of an HDLC frame?FCSFlag*ControlData12

Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.Both PAP and CHAP authentication were attempted.A PPP session was successfully established.*CHAP authentication failed because of an unknown hostname.The debug output is from router R2.13During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)Configure-Reject*Code-RejectDiscard-RequestConfigure-Nak*Protocol-Reject14A network administrator is evaluating authentication protocols for a PPP link. Which three factors might lead to the selection of CHAP over PAP as the authentication protocol? (Choose three.)uses an unpredictable variable challenge value to prevent playback attacks*uses a three-way authentication periodically during the session to reconfirm identities*transmits login information in encrypted format*control by the remote host of the frequency and timing of login eventsestablishes identities with a two-way handshakemakes authorized network administrator intervention a requirement to establish each session15

Place the options in the following order:Step 3Step 2Step 4Step 1 not scored Step 5Step 616What are three components of PPP? (Choose three.)LCP*multilinkNCP*HDLC-like framing*compressionauthentication17

Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?The passwords do not match.*The usernames do not match.The passwords should be longer than 8 characters.The interface IP addresses are in different subnets.18Which PPP option can detect links that are in a looped-back condition?Magic Number*CallbackMRUACCM19Which three are types of LCP frames used with PPP? (Choose three.)link-negotiation frameslink-acknowledgment frameslink-maintenance frames*link-termination frames*link-establishment frames*link-control frames20At which layer of the OSI model does multiplexing take place?Layer 3Layer 4Layer 2Layer 1*21

Place the options in the following order:Phase 3 not scored Phase 1Phase 222Which three physical layer interfaces support PPP? (Choose three.)GigabitEthernetasynchronous serial*HSSI*synchronous serial*POTSFastEthernet23

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Why is the serial link between router R1 and router R2 not operational?The encapsulation in both routers does not match.The passwords are different in both routers.In each case the expected username is not the same as the remote router hostname.*The authentication type is not the same in both routers.24Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?Serial 0/0/0 is up, line protocol is downSerial 0/0/0 is administratively down, line protocol is downSerial 0/0/0 is up (disabled)Serial 0/0/0 is up, line protocol is upSerial 0/0/0 is down, line protocol is down*Serial 0/0/0 is up (looped)CCNA 4 R&S: Connecting Networks Chapter 4 v5.0 Exam Answers 20141.What is a characteristic of Frame Relay that provides more flexibility than a dedicated line?Customers use dedicated circuits in increments of 64 kb/s.Dedicated physical circuits are installed between each site.The Frame Relay cloud allocates as much bandwidth as required to active PVCs to maintain the connection.One router WAN port can be used to connect to multiple destinations.2What are the two major criteria that constitute the cost of a Frame Relay circuit? (Choose two.)QoSend-to-end connectivitylocal looprequired bandwidthcircuit management fees3A router interface connects to a Frame Relay network over a preconfigured logical circuit that does not have a direct electrical connection from end to end. Which type of circuit is being used?SVChub and spokefull meshdedicated leased linePVC4Which Frame Relay topology provides a connection from every site to every other site and maintains a high amount of reliability?hub and spokepartial meshfull meshstar5Which technology allows a Layer 3 IPv4 address to be dynamically obtained from a Layer 2 DLCI?Neighbor DiscoveryAddress Resolution ProtocolInverse Neighbor DiscoveryInverse Address Resolution Protocol6A network administrator has statically configured the LMI type on the interface of a Cisco router that is running Cisco IOS Release 11.2. If the service provider modifies its own LMI type in the future, what step must the network administrator take?The network administrator must modify the keepalive time interval to maintain connectivity with the LMI type of the service provider.The network administrator does not have to do anything, because all LMI types are compatible with one another.The network administrator must statically set the LMI type to be compatible with the service provider.The network administrator simply has to verify connectivity with the provider, because the router has an LMI autosensing feature that automatically detects the LMI type.7Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.)mapping of DLCIs to network addresseserror notificationcongestion notificationsimple flow controlexchange of information about the status of virtual circuits8Which parameter would be specified in a Frame Relay provider contract for a particular company?DEQoSInverse ARP enabled/disabledCIR9Which three notification mechanisms are used when congestion is present in a Frame Relay network? (Choose three.)DEBECNinverse ARPCIRFECNDLCI10Why would a customer request a Frame Relay circuit with a CIR of zero?to have a circuit used for network management trafficto have a backup circuit for critical data transmissionsto have better QoSto have a link with reduced coststo have a circuit used for voice traffic11Which provider-negotiated parameter would allow a customer to send data above the rate of the bandwidth specified by the CIR?DEFECNBeBc12What is the purpose of applying the command frame-relay map ip 10.10.1.2 110 broadcast?to support IPv6 traffic over the NBMA network by using DLCI 110to allow Frame Relay frames to be broadcast over DLCI 110to allow Frame Relay frames to be broadcast toward host 10.10.1.2to allow Frame Relay frames to be broadcast on all Frame Relay interfacesto configure a device with a static Frame Relay map that also allows the forwarding of routing updates13

Refer to the exhibit. Which two statements are correct? (Choose two.)The IPv4 address of interface S0/1/0 on RA is 192.168.1.2.The IPv4 address of interface S0/1/1 on RB is 192.168.1.2.The DLCI that is attached to the VC on RA to RB is 62.The DLCI that is attached to the VC on RB to RA is 62.The Frame Relay map was set by using the command frame-relay map.14

Refer to the exhibit. Which statement is true about Frame Relay traffic on R1?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.Traffic that is mapped to DLCI 201 will exit subinterface Serial 0/0/0.201.Frames that enter router R1 from a Frame Relay neighbor will have DLCI 201 in the frame header.15Which three actions can be taken to solve Layer 3 routing protocol router reachability issues when using Frame Relay? (Choose three.)Use subinterfaces.Disable Inverse ARP.Use a full mesh topology.Use the keyword cisco as the LMI type.Disable split horizon.Configure static DLCI mappings.16When would the multipoint keyword be used in Frame Relay PVCs configuration?when multicasts must be supportedwhen using physical interfaceswhen participating routers are in the same subnetwhen global DLCIs are in use17A network engineer has issued the interface serial 0/0/1.102 point-to-point command on a router that will be communicating with another router over a Frame Relay virtual circuit that is identified by the DLCI 102. Which two commands would be appropriate for the network engineer to issue next? (Choose two.)no shutdownno ip addressencapsulation frame relayip address 10.1.1.10 255.255.255.252frame-relay interface-dlci 10218Which two Frame Relay router reachability issues are resolved by configuring logical subinterfaces? (Choose two.)LMI status inquiry messages sent to the network are not received.Inverse ARP fails to associate all IP addresses to the correct DLCIs.Frame Relay is unable to map a remote IP address to a DLCI.Distance vector routing protocols are unable to forward routing updates back out the incoming interface to other remote routers.Link-state routing protocols are unable to complete neighbor discovery.19

Refer to the exhibit. A network administrator has implemented the show interfaces serial 0/1/0 command. What can be verified from the displayed output?Router R1 connects to multiple sites through the serial 0/1/0 interface.Router R1 is forwarding traffic on interface serial 0/1/0 using the local DLCI 1023.Router R1 is not using the default LMI type.Router R1 has been configured with Frame Relay via the ietf keyword.20The show frame-relay pvc command is best utilized to display the number for which type of packets that are received by the router?FECN and BECN messagesInverse Neighbor Discovery messagesInverse ARP messagesLMI status messages21

Refer to the exhibit. A network administrator is configuring Frame Relay subinterfaces on R1. A distance vector routing protocol has also been configured. Data is routing successfully from R1 to networks that are connected to R2, R3, and R4, but routing updates between R2 and R3 are failing. What is the possible cause of this failure?Split horizon is preventing successful routing table updates on the multipoint link.Multipoint Frame Relay networks cannot be used with this IP addressing scheme.Subinterfaces cannot be used on multipoint Frame Relay links.Two DLCI identifiers cannot be configured on one subinterface.22

Refer to the exhibit. A network administrator issues theshow frame-relay mapcommand to troubleshoot the Frame Relay connection problem. Based on the output, what is the possible cause of the problem?The S0/0/1 interface of the R2 router is down.The IP address on S0/0/1 of R3 is configured incorrectly.Inverse ARP is providing false information to the R1 router.The S0/0/1 interface of the R2 router has been configured with theencapsulation frame relay ietfcommand.The Frame Relay map statement on the R3 router for the PVC to R2 is configured with an incorrect DLCI number.23Fill in the blank. Use an acronym.The Frame Relay DLCI identifies a connection from one endpoint to a remote destination.24Fill in the blank.The encapsulation frame-relay ietf command enables Frame Relay encapsulation and allows connection to a device from a different vendor.25

Place the options in the following order:[+] customers pay for an end-to-end connection[+] customers do not share the line[+] requires more equipment to purchase and maintain[+] used in one-to-one network link only[#] used in one-to-many networks[#] uses virtual circuits[#] customers share bandwidth[+] Order does not matter within this group.[#] Order does not matter within this groupCCNA 4 R&S: Connecting Networks Chapter 5 v5.0 Exam Answers 20141 Typically, which network device would be used to perform NAT for a corporate environment?DHCP serverhost devicerouterserverswitch2 What is the group of public IPv4 addresses used on a NAT-enabled router known as?outside local addressesinside local addressesinside global addressesoutside global addresses3 When NAT is employed in a small office, which address type is typically used for hosts on the local LAN?private IP addressesglobal public IP addressesInternet-routable addressesboth private and public IP addresses4 Which version of NAT allows many hosts inside a private network to simultaneously use a single inside global address for connecting to the Internet?PATstatic NATdynamic NATport forwarding5 Which type of NAT maps a single inside local address to a single inside global address?dynamicstaticport address translationoverloading6 Several key servers in an organization must be directly accessible from the Internet. What addressing policy should be implemented for these servers?Use dynamic NAT to provide addresses for the servers.Place all of the servers in their own Class C private subnet.Use DHCP to assign addresses from the pool of Class B addresses.Assign static internal addresses and public external addresses to each of the servers7 What is a disadvantage of NAT?There is no end-to-end addressing.The router does not need to alter the checksum of the IPv4 packets.The internal hosts have to use a single public IPv4 address for external communication.The costs of readdressing hosts can be significant for a publicly addressed network.8

Refer to the exhibit. What has to be done in order to complete the static NAT configuration on R1?R1 should be configured with the command ip nat inside source static 209.165.200.1 192.168.11.11.R1 should be configured with the command ip nat inside source static 209.165.200.200 192.168.11.11.Interface S0/0/0 should be configured with the command ip nat outside.Interface Fa0/0 should be configured with the command no ip nat inside.9

Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?Access-list 1 is misconfigured.NAT-POOL2 is not bound to ACL 1.Interface Fa0/0 should be identified as an outside NAT interface.The NAT pool is incorrect.10 Which statement accurately describes dynamic NAT?It always maps a private IP address to a public IP address.It provides an automated mapping of inside local to inside global IP addresses.It provides a mapping of internal host names to IP addresses.It dynamically provides IP addressing to internal hosts.11 A network administrator configures the border router with the command R1(config)# ip nat inside source list 4 pool corp. What is required to be configured in order for this particular command to be functional?a NAT pool named corp that defines the starting and ending public IP addressesan access list named corp that defines the private addresses that are affected by NATan access list numbered 4 that defines the starting and ending public IP addressesip nat outside to be enabled on the interface that connects to the LAN affected by the NATa VLAN named corp to be enabled and active and routed by R112 When dynamic NAT without overloading is being used, what happens if seven users attempt to access a public server on the Internet when only six addresses are available in the NAT pool?No users can access the server.The request to the server for the seventh user fails.All users can access the server.The first user gets disconnected when the seventh user makes the request.13 A network engineer has configured a router with the command ip nat inside source list 4 pool corp overload. Why did the engineer use the overload option?The company has more private IP addresses than available public IP addresses.The company needs to have more public IP addresses available to be used on the Internet.The company router must throttle or buffer traffic because the processing power of the router is not enough to handle the normal load of external-bound Internet traffic.The company has a small number of servers that should be accessible by clients from the Internet.14

Refer to the exhibit. What will be the effect of entering the command that is shown in the exhibit on R2 as part of the dynamic NAT configuration?It will define a pool of addresses for translation.It will identify an inside NAT interface.It will bind NAT-POOL1 with ACL 1.It will define the source ACL for the external interface.15 Which configuration would be appropriate for a small business that has the public IP address of 209.165.200.225/30 assigned to the external interface on the router that connects to the Internet?access-list 1 permit 10.0.0.0 0.255.255.255ip nat inside source list 1 interface serial 0/0/0 overloadaccess-list 1 permit 10.0.0.0 0.255.255.255ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240ip nat inside source list 1 pool compaccess-list 1 permit 10.0.0.0 0.255.255.255ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240ip nat inside source list 1 pool comp overloadaccess-list 1 permit 10.0.0.0 0.255.255.255ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240ip nat inside source list 1 pool comp overloadip nat inside source static 10.0.0.5 209.165.200.22516 What are two required steps to configure PAT? (Choose two.)Define a pool of global addresses to be used for overload translation.Define a standard access list denying the addresses that should be translated.Define the range of ports to be used.Identify the inside interface.Define a standard access list that allow the outside global addresses to be used.17

Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router?defines which addresses can be translateddefines which addresses are allowed into the routerdefines which addresses are assigned to a NAT pooldefines which addresses are allowed out of the router18 What is the purpose of port forwarding?Port forwarding allows an external user to reach a service on a private IPv4 address that is located inside a LAN.Port forwarding allows users to reach servers on the Internet that are not using standard port numbers.Port forwarding allows an internal user to reach a service on a public IPv4 address that is located outside a LAN.Port forwarding allows for translating inside local IP addresses to outside local addresses.19 What is a characteristic of unique local addresses?They allow sites to be combined without creating any address conflicts.They are designed to improve the security of IPv6 networks.Their implementation depends on ISPs providing the service.They are defined in RFC 3927.20

Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?dynamic NAT with a pool of two public IP addressesPAT using an external interfacestatic NAT with one entrystatic NAT with a NAT pool21

Refer to the exhibit. The NAT configuration applied to the router is as follows:ERtr(config)# access-list 1 permit 10.0.0.0 0.255.255.255ERtr(config)# ip nat pool corp 209.165.201.6 209.165.201.30 netmask 255.255.255.224ERtr(config)# ip nat inside source list 1 pool corp overloadERtr(config)# ip nat inside source static 10.10.10.55 209.165.201.4ERtr(config)# interface gigabitethernet 0/0ERtr(config-if)# ip nat insideERtr(config-if)# interface serial 0/0/0ERtr(config-if)# ip nat outsideBased on the configuration and the output shown, what can be determined about the NAT status within the organization?Dynamic NAT is working, but static NAT is not.Static NAT is working, but dynamic NAT is not.NAT is working.Not enough information is given to determine if both static and dynamic NAT are working.*22

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.What problem is causing PC-A to be unable to communicate with the Internet?The static route should not reference the interface, but the outside address instead.This router should be configured to use static NAT instead of PAT.The ip nat inside source command refers to the wrong interface.The access list used in the NAT process is referencing the wrong subnet.The NAT interfaces are not correctly assigned.23

Place the options in the following order: not scored step 5step 2step 4step 1step 324What are two of the required steps to configure PAT? (Choose two.)Create a standard access list to define applications that should be translated.Identify the inside interface.*Define the range of source ports to be used.Define the hello and interval timers to match the adjacent neighbor router.Define a pool of global addresses to be used for overload translation.*

CCNA 4 R&S: Connecting Networks Chapter 6 v5.0 Exam Answers 2014

CCNA 4 R&S: Connecting Networks Chapter 6 v5.0 Exam Answers 20141. What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.)LTEFrame Relayleased linesQoSIPsec2. Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection?(Choose two.)a deterministic media access methodchannel bandwidthmodulation techniqueVPN tunneling requirementsthe separation of the voice and data transmissions3. Which medium is used for delivering data via DSL technology through PSTN?fibercopperradifrequencywireless4. A company is looking for the least expensive broadband solution that provides at least 10 Mb/sdownload speed. The company is located 5 miles from the nearest provider. Which broadbandsolution would be appropriate?satelliteDSLWiMaxcable5. What are twcharacteristics of a PPPoE configuration on a Cisccustomer router? (Choosetwo.)The PPP configuration is on the dialer interface.An MTU size of 1492 bytes is configured on the Ethernet interface.The Ethernet interface does not have an IP address.The customer router CHAP username and password are independent of what is configured on the ISP router.The dialer pool command is applied tthe Ethernet interface tlink it tthe dialer interface.6. Fill in the blank.DOCSIS specifies the MACsub-layer as a Layer 2 requirement that defines either a deterministic access method, TDMA, or S-CDMA.7. Fill in the blank. Use only an acronym.PPPoE creates a PPP tunnel through the DSL connection for the purpose of sending PPP frames.8. What functionality is required on routers tprovide remote workers with VoIP and videoconferencing capabilities?PPPoEQoSVPNIPsec9. Which broadband wireless technology is based on the 802.11 standard?CDMAmunicipal Wi-FiUMTSWiMAX10. Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes t1492?to enable CHAP authenticationto accommodate the PPPoE headersto reduce congestion on the DSL linkto establish a secure tunnel with less overhead11. Which standard specifies the channel frequencies and the deterministic access method of cable networks?DOCSIS802.16LTEWIMAX12. Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.)VPN client software or VPN-enabled routerbroadband Internet connectionVPN server or concentratorauthentication servermultifunction security appliance13. In which layer of the TCP/IP protocol model does IPsec apply security to network data?applicationtransportinternetnetworkaccess14. Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?CDMAS-CDMAFDMATDMA15. How is voice traffic affected when the customer uses ADSL technology?No special equipment is needed to separate voice and data signals.Voice traffic is interrupted if the ADSL service fails.Voice signals are on a separate wire pair from ADSL signals.ADSL signals can distortvoice transmissions.16. Which technology provides a secure connection between a SOHO and the headquarters office?PPPoEQoSWiMaxVPN17. What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.)The customer router CHAP username and password are independent of what is configured on the ISP router.The PPP configuration is on the dialer interface.An MTU size of 1492 bytes is configured on the Ethernet interface.The Ethernet interface does not have an IP address.The dialer pool command is applied to the Ethernet interface to link it to the dialer interface.18. What advantage does DSL have compared to cable technology?DSL upload and download speeds are always the same.DSL is not a shared medium.DSL is faster.DSL has no distance limitations.19. What are two disadvantages of employing teleworkers in an organization? (Choose two.)slower customer service response timesincreased usage of sick or vacation daysincreased difficulty of tracking task progressincrease in office expensesthe need to implement a new management style20.

Place the options in the following order:WiMaxCellular/MobileSatellite not scored -21. Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?SDSLTDMACDMAADSL22. Which networking technology will ensure reliable and secure remote access when a teleworker connects to a corporate network?an encrypted VPN tunnelrouters with QoS capabilitybroadband (cable or DSL) access to the corporate networka VoIP and videoconferencing capable connection23. Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea?satelliteWi-Fi Meshmobile broadbandWiMax24. Which type of long distance telecommunication technology provides point-to-point connections and cellular access?WiMaxsatellitemobile broadbandmunicipal Wi-Fi25. What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?QoSVPNPPPoEIPsec26A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?satelliteDSLWiMaxcable