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CCNA3 TEST & ANSWER ---SEM4 CH5 1 A ping is sent to address
192.168.50.10 from the Peanut router. Which DLCI will be used to send the ping?
110 115 220 225 2 Which methods are used to minimize heavy traffic on a Frame
Relay network? (Choose two.) FRADs or routers set ECN bits to request that the
Frame Relay switch reduce the flow of frames on the link. Windowing is used to
reduce the size of the frames sent across the link. The Frame Relay switch will
drop low priority packets that have the DE bit set. When a switch sees its
queue increasing, it notifies DTEs to reduce the flow of traffic. If congestion
occurs, all frames are dropped until the congestion clears. 3 What is the
purpose of the FCS field in a Frame Relay frame? It serves to distinguish one
frame from the next. It is used to signal network congestion. It is used to
detect if the frame has been corrupted and should be discarded. It determines
which VC should be used for transmission. 4 What does a DLCI of 1023 indicate
about a frame? The LMI type is ANSI. The LMI type is IETF. The LMI type is
Cisco. The LMI type is Q933a. The encapsulation is Cisco. The encapsulation is
IETF. 5 Which of the following DLCIs are reserved? 16 127 255 1023 2048 6 Which
of the following allow the router to map data link layer addresses to network
layer addresses in a Frame Relay network? (Choose two.) ARP RARP Proxy ARP
Inverse ARP LMI status messages ICMP 7 What is created between two DTEs in a
Frame Relay network? switched parallel circuit permanent virtual circuit
limited access circuit ISDN circuit Frame Relay circuit 8 Which statement
identifies a reason for using subinterfaces in Frame Relay networks?
Subinterfaces overcome routing update and split-horizon issues that occur with
multipoint physical interfaces. A subinterface does not require an IP address
and therefore saves address space. Multipoint subinterfaces override the
split-horizon rules and allow broadcast traffic to be forwarded by default.
Subinterfaces provide greater reliability and reachability in Frame Relay
networks by requiring a mesh topology for network configurations. Subinterfaces
increase the number of DLCIs that can be configured in a Frame Relay network. 9
Which features make Frame Relay technology a cost-effective alternative to a
mesh of access lines? (Choose three.) allows a single interface to support
multiple PVCs minimizes the equipment required to be purchased by the customer
requires one router interface for each PVC allows the customer to do dial on
demand routing over analog lines rather than paying for access lines allows the
customer to pay for the average bandwidth requirement rather than the maximum
bandwidth requirement 10 Which commands were added to the configuration to
produce the output shown in the graphic? (Choose two.) Router(config)# ip route
192.168.192.4 255.255.255.0 17 broadcast Router(config-if)# frame-relay
lmi-type cisco 17 Router(config-if)# frame-relay map ip 192.168.192.4 17
broadcast Router(config-if)# ip address 192.168.192.4 255.255.255.0 DLCI 17
static Router(config-if)# interface S0/0.1 point-to-point Router(config-if)#
encapsulation frame-relay cisco 11 Which of the following statements are true
about a basic Frame Relay WAN connection between a customer and the service
provider? (Choose two.) DTE devices such as routers and FRADs transmit user
data. DTE devices such as Frame Relay switches transport the data between DTE
devices. An Ethernet connection between the router and the frame relay switch
allow access to the frame relay network. Serial connections between the
customer and the frame relay network are used to transport data. The Frame
Relay WAN is a mesh of interconnected routers. 12 How does Frame Relay
technology process frames that contain errors? (Choose two.) Frame Relay
services depend on the upper layer protocols to handle error recovery. It
requires the receiving device to request that the sender retransmit erroneous
frames. FECN, BECN, and DE bits are set in the frames to minimize errors. The
receiving device drops any frames that contain errors without notifying the
sender. The frame relay switch notifies the sender that errors were detected.
13 Why are full mesh topologies seldom found in large Frame Relay networks?
Additional hardware is required to achieve the mesh. The additional virtual
circuits slow the link access speeds. The required number of links becomes
prohibitive. Additional interfaces are required since each can only support 10
virtual circuits. The speed of transmission slows in inverse proportion to the
square of the number of links. 14 Which bits are set in the data frames to
request that a device reduce the flow of data sent to or from a Frame Relay
switch? EIR bits ECN bits CIR bits DE bits Window bits 15 Which data link layer
protocol is used to carry frames across a Frame Relay link? HDLC PPP LAPD LAPF
Frame Relay 16 When troubleshooting a frame relay connection, a technician
entered the show frame-relay pvc command shown in the graphic. What can be
concluded from the output shown in the graphic? (Choose three.) The output in
the debug frame-relay lmi command will indicate status 0x2 for DLCI 18. DLCI 16
was programmed on the switch, but the remote router may be misconfigured. The
frame relay switch is sending LMI status messages about DLCI 16 to the
Singapore router. Congestion has been experienced on DLCI 18. Some packets have
been set to be dropped if congestion is experienced on the PVC. 17 When
troubleshooting a frame-relay connection, an administrator entered the show
interface s0/0 command and received the output shown in the graphic. The line
protocol is down. Which of the following are possible reasons for this problem?
(Choose two.) The cable between the CSU/DSU and the router is disconnected. The
serial 0/0 interface is shutdown. The frame-relay switch is not advertising the
correct PVCs. The LMI type on the frame-relay switch is Cisco. The address of
the frame-relay switch is not in the routing table. 18 Which of the following
statements regarding multipoint subinterfaces are true? (Choose two.) A single
multipoint subinterface is used to establish PVC connections to multiple
physical interfaces on remote routers. Each multipoint link is in its own
subnet. The physical interface does not have an IP address. Split-horizon is
disabled allowing routing updates to be re-transmitted on every subinterface.
Multipoint subinterfaces require the encapsulation frame-relay command to be
issued individually for each subinterface to operate correctly. 19 Which of the
following occurs when the command frame-relay map ip 10.1.1.1 22 is configured
on the router? (Choose two.) DLCI 22 will replace the MAC address in the ARP
table for entry 10.1.1.1 The remote circuit with DLCI 22 can receive a ping.
Inverse-ARP will be used to add an entry for 10.1.1.1 into the frame-relay map
table using DLCI 22. Pings to 10.1.1.1 will be sent on the circuit labeled DLCI
22. The router will use DLCI 22 to forward data to 10.1.1.1. 20 How is a
permanent virtual circuit defined in a Frame Relay network that is carrying IP
traffic? It is given a fixed locally significant identification number. It has
a specific IP address. It is identified by the MAC address of the router
interface. Dynamic virtual channel identifiers are assigned to each frame
transmitted across the network. The service provider assigns a terminal
endpoint identifier to the switch port. 21 Which of the following are LMI
extensions? (Choose two.) broadcasting of frames PVC status messages call tear
down simple flow control congestion avoidance frame discarding
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