Exam Prep Questions

Question 1	What must be done to allow a VLAN to span two or more switches? A. Set up a VTP domain B. Set up a trunk connection C. Configure the duplex setting on the ports D. Configure port security on the switch
A1:	Answer B is correct. A trunk connection must be established in order for a VLAN to span multiple switches. Trunk ports recognize frame tags and are therefore able to carry information on multiple VLANs. Answer A is incorrect because a VTP domain is not necessary for switches to share VLAN information. Answer C is incorrect because the duplex setting does not have to be configured manually to connect two switches. Answer D is incorrect because port security is not necessary for a VLAN to span switches.
Question 2	What is ISL used for? A. To allow an Ethernet interface to understand frame tags B. To make two Ethernet interfaces appear as one C. To connect an Ethernet switch with a high-speed core switch such as ATM D. To allow simultaneous routing and switching
A2:	The correct answer is A. ISL allows an Ethernet interface to understand frame tags, which identify the VLAN to which a packet belongs. For this reason, an ISL interface can participate in multiple VLANs, which is necessary for a trunk connection. Answer B is incorrect because ISL can actually have the opposite effect of this ”a single Ethernet interface may appear to be several by having multiple Layer 3 addresses. Answers C and D are incorrect because these are not functions of ISL.
Question 3	What is the purpose of VTP pruning? A. To detect loops in the switching fabric B. To disable a trunk connection that creates a bridging loop C. To simplify the management of VLANs D. To prevent flooding unnecessary traffic across trunk connections
A3:	The correct answer is D. VTP pruning is used to prevent flooding of unnecessary traffic across trunk connections. Answer A is incorrect because this is a function of the spanning tree protocol. Answer B is incorrect because this is not the purpose of VTP pruning. Answer C is incorrect because this is the purpose of the VTP, not VTP pruning.
Question 4	Which of the following is a valid command to create a VLAN on a Catalyst 1900 switch and name it Accounting? A. switch(config)#create vlan 10 name Accounting B. switch#create vlan 10 name Accounting C. switch(config)#vlan 10 name Accounting D. switch#vlan 10 name Accounting
A4:	The correct answer is C. The correct syntax to create a VLAN in command mode is vlan {number} name {name} from global configuration mode. Answers A and B are incorrect because the word "create" is not a part of this command. Answer D has the correct syntax for the command, however, the switch is not in configuration mode; therefore, answer D is incorrect.
Question 5	Which of the following commands will assign Ethernet port 9 on a Catalyst 1900 to VLAN 20? A. interface Ethernet 0/9 and vlan-membership static 20 B. vlan-membership interface Ethernet 0/9 static 20 C. interface Ethernet 0/9 and vlan 20 D. vlan 20 interface Ethernet 0/9
A5:	The correct answer is A. To assign an interface to a VLAN, you must first enter port configuration mode by using the interface Ethernet 0/9 command from global configuration mode. Then, use the vlan-membership command to assign a VLAN to the port. Answers B, C, and D are all invalid syntax.
Question 6	Which VLAN port configuration option requires more up-front administration because of database configuration? A. Static B. Port-centric C. Dynamic D. Dynamic-relational
A6:	The correct answer is C. The dynamic configuration requires more initial overhead because the administrator has to configure the switches database. Answer A is incorrect because static is also labor intensive up front, but not as much as dynamic. Answer B is incorrect because port-centric is the easiest of the three to administer. Answer D is incorrect because there is no such thing as a dynamic-relational configuration for Cisco's switch ports. The only configuration options are static, port-centric, and dynamic.
Question 7	Which VLAN port configuration option states that no other packets will flow over into other workstation's domains? A. Static B. Port-centric C. Dynamic D. Static filtered
A7:	The correct answer is D. Port-centric is the correct choice because of the ability to assign VLAN IDs to ports in the same VLAN. Answer A, static, and B, dynamic, are incorrect because neither has the capability of assigning IDs to specific ports within the same VLAN. Answer D is incorrect because static filtered is not a VLAN port configuration option.
Question 8	Which of the following commands could be used to assign an IP address to a Catalyst 1900 switch? A. ip-address 10.1.1.10 255.0.0.0 B. ip address 10.1.1.10 and subnet-mask 255.0.0.0 C. ip 10.1.1.10/255.0.0.0 D. ip address 10.1.1.10 255.0.0.0
A8:	The correct answer is D. The command for assigning an IP address to a switch from the command prompt is ip address {address}{subnet-mask} . Answers A and C are incorrect because these are invalid commands. Answer B is incorrect because subnet-mask is not a valid command.
Question 9	What command can be used on a Catalyst 1900 switch to view it's TCP/IP configuration information? A. show tcp/ip B. show ip C. show network D. display network
A9:	The correct answer is B. The show ip command will display information about the TCP/IP settings the switch is using. Answers A, C, and D are all invalid commands.
Question 10	A marketing department has 15 stations on the fourth floor connected to a Cisco 1900 switch. The department has an additional 12 stations on the second floor connected to a second Cisco 1900 switch. The two switches are connected via standard 100BASE-T ports using a crossover cable. The department head has stated that she wants everybody on the same department LAN. Which trunk command option would you use for the port connected to the crossover cable on the fifth floor to ensure communications between the two groups? A. On B. Off C. Desirable D. Auto
A10:	Answer B is correct. Trunking is used when VLANs span more than one switch. In this case, the department head wants a single LAN so trunking would not be needed or desired. Traffic will automatically flow across the crossover cable as needed. Answer A is not correct because it would force the port into permanent ISL trunk mode. Answer C is not correct because if the port on the second floor were set to anything other than "off", both ports would immediately go into trunk mode. Answer D is not correct because if the port on the second floor was set to "desirable" or "on", both ports would again go into trunk mode.