| Question 1 | Which of the following items are not necessary when setting up routing in a VLAN environment? |
| A1: | Answers B and C are correct. Tuning STP is not necessary to set up routing in a VLAN environment. B is required only for a router-on-a-stick, but you can use access links or MLS also. Answers A and D are required, and therefore are incorrect answers. |
| Question 2 | You need to create an SVI interface for VLAN 10 on your Catalyst switch. Enter the command to do this: _________. |
| A2: | interface vlan 10. An SVI interface is a logical interface on the switch. To create an SVI interface, use the interface vlan command followed by the VLAN number. Activate the interface with the no shutdown command and assign your Layer 3 address with the ip address command. |
| Question 3 | Which command enables routing on a physical port of a Catalyst switch? |
| A3: | Answer B is correct. To change a physical interface from Layer 2 to Layer 3 processing, use the no switchport command. Answers A and D are incorrect because these are nonexistent commands. Answer C is incorrect because this command changes the interface to automatically sense for an access link or trunk port. |
| Question 4 | Which form of switching pre-populates the switching table with information from the routing table? A. NetFlow B. Distributed C. Centralized D. Topology-based
|
| A4: | Answer D is correct. Topology-based switching pre-populates the FIB with information from the routing table this gives it an advantage over a NetFlow switch, which must see packets to build the switching table. Therefore, Answer A is incorrect. Answers B and C are incorrect because these switching architectures refer to the location of the tables within the chassis, not how they're populated. |
| Question 5 | Which Catalyst switches support centralized forwarding? A. 3550 B. 3550 and 4000 C. 6500 D. 4000 and 6500
|
| A5: | Answer D is correct. Both the 4000 and 6500 support centralized forwarding. Answers A and B are incorrect because they include the 3550, which supports only distributed switching. Answer C is incorrect because it doesn't include the 4000. |
| Question 6 | When MLS rewrites frames in hardware, which of the following information is not changed? |
| A6: | Answer A is correct. The IP addresses are not changed when MLS rewrites frame and packet information. Answers B, C, and D are rewritten by an MLS switch. |
| Question 7 | CEF will work for IP if which of the following is true? A. Ethernet II frames are used B. Packets require fragmentation C. Packets forwarded out a tunnel interface D. IP packet contains header options
|
| A7: | Answer A is correct. If you want to use CEF with IP traffic, the data link layer must use an Ethernet II frame type. Answers B, C, and D will cause CEF to pass these packets to the RP to be processed in software. |
| Question 8 | Which CEF table is built from the ARP table? A. CAM B. TCAM C. Adjacency D. FIB
|
| A8: | Answer C is correct. The CEF adjacency table is built from the ARP table. Answer A is incorrect because the Layer 2 switch builds this when performing its learning function. Answer B is incorrect because CEF builds this based on connection information in the frames and packets it sees. Answer D is incorrect because the FIB is built from the routing table. |
| Question 9 | CEF can load balance across a maximum of _____ paths. A. One B. Four C. Six D. Eight
|
| A9: | Answer C is correct. CEF supports up to six equal or unequal cost paths for load balancing, making answers A, B, and D incorrect. |
| Question 10 | Which command must you execute to enable CEF on a Cisco switch? |
| A10: | Answer D is correct. No command is required to enable CEF on a Catalyst switch it is enabled by default. Answer A is correct if you had disabled CEF on a 4000 and want to re-enable it. Answers B and C are nonexistent commands and are therefore incorrect. |
