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- Question
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?
Options- A. Discard it and send an error message back to the originating host
- B. Flood the network with the frame
- C. Add the source address and port to the MAC address table and forward the frame out the destination port
- D. Add the destination to the MAC address table and then forward the frame
- Correct Answer
- Add the source address and port to the MAC address table and forward the frame out the destination port
ExplanationSince the source MAC address is not in the MAC address table, the switch will add the source address and the port it is connected to into the MAC address table and then forward the frame to the outgoing port. - 1. What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?
Options- A. Forwards the switch to the first available link
- B. Drops the frame
- C. Floods the network with the frame looking for the device
- D. Sends back a message to the originating station asking for a name resolution Discuss
- 2. Which of the following types of connections can use full duplex?
- Hub to hub
- Switch to switch
- Host to host
- Switch to hub
- Switch to host
Options- A. 1, 2 and 4
- B. 3 and 4
- C. 3 and 5
- D. 2, 3 and 5 Discuss
- 3. What is the maximum distance with maximum data rate for 802.11a?
Options- A. About 65-75 feet
- B. About 90-100 feet
- C. About 150 feet
- D. Over 200 feet Discuss
- 4. Which command will create a dynamic pool named Todd that will provide you with 30 global addresses?
Options- A. ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.240
- B. ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.224
- C. ip nat pool todd 171.16.10.65 171.16.10.94 net 255.255.255.224
- D. ip nat pool Todd 171.16.10.1 171.16.10.254 net 255.255.255.0 Discuss
- 5. To enable EIGRP, which of the following would you use?
- Router1(config-if)# ipv6 ospf 10 area 0.0.0.0
- Router1(config-if)# ipv6 router rip 1
- Router1(config)# ipv6 router eigrp 10
- Router1(config-rtr)# no shutdown
- Router1(config-if)# ipv6 eigrp 10
Options- A. 1, 3 and 5
- B. 3, 4 and 5
- C. 1 and 3
- D. 5 only Discuss
- 6. Which of the following is true regarding access lists applied to an interface?
Options- A. You can place as many access lists as you want on any interface until you run out of memory.
- B. You can apply only one access list on any interface.
- C. One access list may be configured, per direction, for each layer 3 protocol configured on an interface.
- D. You can apply two access lists to any interface. Discuss
- 7. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
Options- A. Send a different source port number.
- B. Restart the virtual circuit.
- C. Decrease the sequence number.
- D. Decrease the window size. Discuss
- 8. Which of the following protocols are used to configure trunking on a switch?
- VLAN Trunk Protocol
- VLAN
- 802.1Q
- ISL
Options- A. 1 only
- B. 3 only
- C. 3 and 4
- D. 1, 3 and 4 Discuss
- 9. You need to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface of the router for this connection?
Options- A. Router(config-if)#encapsulation frame-relay q933a
- B. Router(config-if)#encapsulation frame-relay ansi
- C. Router(config-if)#encapsulation frame-relay ietf
- D. Router(config-if)#encapsulation frame-relay cisco Discuss
- 10. If you delete the contents of NVRAM and reboot the router, what mode will you be in?
Options- A. Privileged mode
- B. Global mode
- C. Setup mode
- D. NVRAM loaded mode Discuss
More questions
Correct Answer: Floods the network with the frame looking for the device
Explanation:
Switches flood all frames that have an unknown destination address. If a device answers the frame, the switch will update the MAC address table to reflect the location of the device.
Correct Answer: 2, 3 and 5
Explanation:
Hubs cannot run full-duplex Ethernet. Full duplex must be used on a point-to-point connection between two devices capable of running full duplex. Switches and hosts can run full duplex between each other, but a hub can never run full duplex.
Correct Answer: About 65-75 feet
Explanation:
The IEEE 802.11a standard provides a maximum data rate of up to 54Mbps, but you need to be close to the access point, somewhere around 65 to 75 feet.
Correct Answer: ip nat pool Todd 171.16.10.65 171.16.10.94 net 255.255.255.224
Explanation:
The command
ip nat pool <name> creates the pool that hosts can use to get onto the global Internet. What makes option B correct is that the range 171.16.10.65 through 171.16.10.94 includes 30 hosts, but the mask has to match 30 hosts as well, and that mask is 255.255.255.224. Option C is wrong because the pool name has a lower case "T" in the pool name. Pool name's are case sensitive.
Correct Answer: 3, 4 and 5
Explanation:
Unlike RIPng and OSPFv3, you need to configure EIGRP both from global configuration mode and from interface mode, and you have to enable the command with the
no shutdown command.
Correct Answer: One access list may be configured, per direction, for each layer 3 protocol configured on an interface.
Explanation:
A Cisco router has rules regarding the placement of access lists on a router interface. You can place one access list per direction for each layer 3 protocol configured on an interface.
Correct Answer: Decrease the window size.
Explanation:
A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.
Correct Answer: 3 and 4
Explanation:
Cisco has a proprietary trunking protocol called ISL. The IEEE version is 802.1Q.
Correct Answer: Router(config-if)#encapsulation frame-relay ietf
Explanation:
If you have a Cisco router on one side of a Frame Relay network and a non-Cisco router on the other side, you would need to use the Frame Relay encapsulation type of IETF. The default is Cisco encapsulation, which means that a Cisco router must be on both sides of the Frame Relay network.
Correct Answer: Setup mode
Explanation:
If you delete the startup-config and reload the router, the router will automatically enter setup mode. You can also type
setup from privileged mode at any time.
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