Cadaveres

Páginas: 12 (2780 palabras) Publicado: 10 de julio de 2011
1. Which of the following describes the roles of devices in a WAN? (Choose three.)
**A CSU/DSU terminates a digital local loop.
A modem terminates a digital local loop.
A CSU/DSU terminates an analog local loop.
**A modem terminates an analog local loop.
**A router is commonly considered a DTE device.
A router is commonly considered a DCE device.
2. What value in the address field of aFrame Relay header identifies the destination of the frame?
CIR
DE
**DLCI
ISDN
FRAD
PVC
3. The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue explains why the link is unable to establish a PPP session?
The IP addresses must be on different subnets.
**The usernames are misconfigured.
The passwords must be different for theCHAP authentication.
The clock rate must be 56000.
The clock rate is configured on the wrong end of the link.
Interface serial 0/0 on Left must connect to interface serial 0/1 on Right.
4. The output of the show interfaces serial 0/0 command for a frame-relay connection indicates that the serial line is up but the line protocol is down. What are possible causes for this? (Choose two.)
**Thereis an LMI-type mismatch between the Frame Relay switch and the router.
There is no clock present on the serial interface.
The interface is shut down.
RARP is not functioning on the router.
**The cable is disconnected.
5. Which statements are correct about the point in the network where the responsibility of the service provider ends? (Choose three.)
**The International point is on thecustomer side of the network terminating unit(NTU).
**The United States point is at the interface of the customer-provided equipment and the local loop.
The responsibility for this point is controlled by IANA.
**The point is called the demarcation point.
The point is typically located at the service provider’s central office.
The point is located between the customer’s local area networks.
6.While prototyping an internetwork in the corporate lab, a network administrator is testing a serial link between serial 0/0 interfaces on two routers. The labels on the serial cable ends have been damaged and are unreadable. What command can be issued to determine which router is connected to the DCE cable end?
show interfaces serial 0/0
show version
**show controllers serial 0/0
show protocolsserial 0/0
show status serial 0/0
7. A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the graphic, what is the most likely problem?
The DHCP server service is not enabled.
The inside interface for DCHP is not defined.
**TheDHCP pool is not bound to the interface.
The pool does not have a default router defined for the clients.
All the host addresses have been excluded from the DHCP pool.
8. A technician enters the interface serial 0/0.1 multipoint command when configuring a router. What effect will the multipoint keyword have in this configuration? (Choose two.)
**Split-horizon issues will need to be resolvedfor this network if RIP is the routing protocol.
A subinterface will be defined for each PVC.
**All the participating interfaces of remote routers will be configured in the same subnet.
A single DLCI will be used to define all the PVCs to the remote routers.
An IP address will need to be configured on the main interface.
9. When configuring a Frame Relay connection, when should a static FrameRelay map be used? (Choose two.)
when the remote router is a non-Cisco router
**when the remote router does not support Inverse ARP
when the local router is using IOS Release 11.1 or earlier
**when broadcast traffic and multicast traffic over the PVC must be controlled
when globally significant rather than locally significant DLCIs are being used
10. Which router command would be used to...
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