Wireless Concepts Chapter 10
To meet the requirements of this scenario, you must use Static translation. Static translation consistently maps an unregistered IP address to a registered IP address on a one-to-one basis, whereas using a pool of addresses might assign a different registered IP address each time. Properly configuring the NAT router for this scenario requires three steps:
1. From global configuration mode, create a mapping for the inside (private) address to the outside (public) address with the command ip net inside source static 192.168.2.100 24.1.2.11. 2. Identify the E0 interface as the inside (private or unregistered) network interface with the command ip nat inside. 3 Identify the S0 interface as the outside (public or registered) network interface with the command ip nat outside.
Which cellular network type can, theoretically, provide speeds up to 10Gbps?
5G
Which VSAT component provides data transmission capabilities over a satellite link?
Block Upconverter (BUC)
Which of the following would cause a TCP/IP connectivity issue between two routers?
Both routers have an IP address of 192.168.1.100.
You have a small network connected to the internet as shown. Which of the following statements is true? (Select two.)
o Internet hosts can reach Srv2 without NAT. o The router must be configured for NAT for Srv1 to communicate on the internet.
Which of the following is an example of a public WAN?
Cable internet
Which of the following services are available regardless of whether the telephone company network is available?
Cable modem
Which switching network type allows data connections that can be initiated when needed and terminated when communication is complete?
Circuit
Match each WAN topology to its description. Each topology will only be used once.
Connects multiple network locations to each other via WAN links. Each location has a direct link to all other locations. o Full mesh Connects multiple remote networks via WAN links. One site is the main location o Hub and spoke A single, pre-established path from one network location, through a carrier network, and to a remote network location. o Point-to-point Provides two separate physical connects to a single ISP. o Dual-homed A network connected to an ISP using a single line. o Single-homed
Drag each leased line component on the left with its corresponding description on the right. Each component may be used once, more than once, or not at all.
Connects the WIC in the router to the telecom equipment. o Serial cable Controls the speed and timing of the router's serial interfaces. o CSU/DSU Provides the clocking function on the link. o CSU/DSU The equipment at the customer site. o CPE Provides a Layer 1 interface between the router and the telecom provider's equipment. o CSU/DSU
What is the router that provides clocking when connecting two routers in a back-to-back configuration through their serial ports called?
DCE
Which is the default Layer 2 encapsulation method for serial interfaces on a Cisco router?
HDLC
There is a connection or communication problem, such as: No clock rate provided by the DCE device. Mismatched encapsulation. Incorrect authentication parameters for PPP. What would the line and protocol status show?
o Line status Up o Protocol status Down
You have a small business network with a single subnet connected to the internet through a Cisco router (RouterA). IP addresses are assigned as shown. A browser session on the workstation tries to connect to the www.westsim.com web server. What IP address and port number will the web server use as the destination address when responding to the workstation's request?
IP address 199.67.111.89 and a dynamic port assigned by RouterA
What is the first step when troubleshooting a serial link?
Isolate the fault domain
A failed ping or traceroute test might indicate a problem on which layers? (Select three.)
Layer 3 Layer 1 Layer 2
A connection or communication problem on the Data Link Layer could be indicated by which interface status?
Line Status up and Protocol Status down
Which of the following is a benefit of using network address translation (NAT)?
NAT provides a measure of network security.
On which layer of the OSI model does routing occur?
Network
You have a small network as shown. Router2 is connected to the internet through a fiber optic FastEthernet connection and will be configured with NAT to provide internet connectivity to your private network. What type of address would you assign to the Fa0/1 interface on Router2?
Outside global
You are designing a new network that will support 6,000 computers. You only have eight registered IP addresses that can be allocated to the employees for external network communication, so you decide to implement NAT and share the addresses. You want all of these computers to be able to access the internet at the same time if necessary. Which method of NAT translation should you implement?
Overloading
When implementing a Multiprotocol Label Switching (MPLS) WAN, which data unit is managed by the routers at different sites?
Packets
Which tool can be used to verify Network layer connectivity?
Ping
Which of the following is a type of line supported by a leased line?
o T3 o T1
Which of the following is true regarding WAN leased lines?
o The speed is symmetric. o Each router runs in full-duplex.
You have an office network connected to the internet as shown. The network has three subnets, all with client computers. The Web1 server on Subnet1 hosts a small website used for traveling employees. Employees must be able to contact the web server from the internet. All other hosts on the private network need to have full internet connectivity for browsing the web and sending email. On which routers should you configure NAT?
RouterC
You are troubleshooting connectivity issues. You had a successful ping test, but your Telnet test failed. What does this tell you?
The Network layer has connectivity.
Which of the following describe the channels and data transfer rates used for ISDN BRI? (Select two.)
o Two channels operating at 64 Kbps each o One channel operating at 16 Kbps
What is the removable card that contains the serial interface on a router called?
WIC
You are troubleshooting problems with a serial interface on a router that is connected to a leased line WAN interface. You need to view the type of serial cable that has been used on the s0/0/1 interface and which end of the cable is connected to the DCE or DTE. Which command should you use to do this?
sh controllers s0/0/1
Which command will allow you to see a consolidated message about each IP interface?
sh ip int brief
You need to view the type of serial cable that has been used on the s0/0/1 interface and which end of the cable is connected to the DCE or DTE. Which command should you use to do this
show controllers s0/0/1
Which of the following commands will show you the most information about each interface?
show interfaces
You have a small business network with a single subnet connected to the internet. Your ISP has assigned your router an IP address of 199.211.77.5 for its serial interface. You have chosen to use a network address of 172.15.1.0/24 on your private network. You use the SDM interface to configure basic NAT on the router with a single default route to the ISP. What is the most likely result of this configuration?
Your network has internet connectivity, but some websites might be unreachable.
You want to configure NAT so that packets from all hosts on network 192.168.2.0 will share the registered IP address 24.1.2.8 as shown. You have already identified the inside and outside NAT interfaces on the router. Which of the following command options will translate all inside host addresses to the single registered IP address?
access-list 1 permit 192.168.2.0 0.0.0.255ip nat inside source list 1 interface serial 0 overload
You are configuring a serial connection and need to configure the DCE to provide a clocking signal. Given that you have leased a 128 Kbps line from the WAN service provider, which command should you use to accomplish this task?
clock rate 128000
You need to assign an interface on the router with the IP address 192.168.1.250 and subnet mask of 255.255.255.0. Which command will accomplish this task?
ip address 192.168.1.250 255.255.255.0
You are the network administrator for a company that has a small block of registered IP addresses ranging from 24.1.2.32 to 24.1.2.47. You want to assign these addresses to a dynamic pool in NAT. Which command should you use?
ip nat pool net-1 24.1.2.32 24.1.2.47
Which of the following is true of Multiprotocol Label Switching? (Select two.)
o CEF is required for all MPLS-enabled Cisco routers. o MPLS can carry ATM, SONET, and Ethernet traffic.
Which WAN connection types use digital communications over POTS? (Select two.)
o ISDN o DSL
