Review Questions

1.	What command is used to connect to an RSM from a set-based switch CLI? connect telnet session module
2.	What command shows you the hardware address of each card in a 4000 series switch? sh cards show session show version show module
3.	What command is used to set a virtual hardware address on a VLAN interface? mac-address mac_address config mac slot/port mac-address set vlan mac-address mac-address set mac mac-address
4.	What are the two types of frame-tagging encapsulation methods used with FastEthernet and Gigabit Ethernet trunk links? dot1Q sde ISL tr-isl
5.	What are the two options you can consider when you need to have inter-VLAN communication and you have only an external router? One router interface for every switch in the internetwork One router interface for every single VLAN Two router interfaces for every switch in the internetwork One router interface into one switch port running a trunking protocol
6.	What is the correct configuration for a subinterface on a modular router? int 10.f0/0 int fa0/0.3980 faste 0/0 subinterface 3 set int f0/0.1
7.	Which of the following is true regarding layer 2 switches? They break up collision domains by default. They break up broadcast domains by default. They provide inter-VLAN routing by default. An external route processor can be attached to the backplane of the switch to provide inter-VLAN routing.
8.	What is an advantage of running an integral layer 3 switch as opposed to one with an additional plug-in module? Integral layer 3 switches run an enhanced version of IOS. Integral switches are more scalable. Integral switches are more resilient. There are no obvious advantages at the moment; different switches suit different tasks.
9.	Which of the following is true regarding the configuration of the internal route processors? The 6000 series internal processors use the set commands. The 4000 series internal processors use a menu-driven interface. The 8500 series of switches does not support internal route processors. Internal route processors all use IOS commands.
10.	Which two commands can be used to set a default route on a 4000 series switch to 172.16.1.1? route add 0.0.0.0 0.0.0.0 172.16.1.1 set ip route default 0.0.0.0 172.16.1.1 set ip route default 172.16.1.1 set ip route 0.0.0.0 172.16.1.1
11.	Which of the following is used to configure VLAN 1 on an internal route processor with an IP address of 208.211.78.200/28? set vlan1 ip address 208.21.78.200 255.255.255.240 config t, vlan1 ip address 208.21.78.200 255.255.255.240 int vlan 1, ip address 208.211.78.200 255.255.255.240 set int vlan1, ip address 208.211.78.200 255.255.255.224
12.	Which of the following is true? You are required to assign a password to an RSM interface CLI. You must perform a no shutdown command for every subinterface on an external route processor. You must perform a no shutdown command for every VLAN on an internal route processor. You can use a 2500 series router for ISL routing.
13.	What routing protocols must be configured on an internal router to route between directly connected VLANs? RIP, as long as the same subnet is used throughout. None—directly connected subnets automatically appear in the routing table. Routing protocols are enabled by default. EIGRP or IGRP with ISL, RIP or OSPF with 802.1Q.
14.	If you wanted to view the IP routing table on a 3550 switch, which command would you use? sh vlan route show ip route sho ip vlan show route vlan
15.	To view the routing table on the internal route processor, use the ________ command. show routing protocol show vlan show config show ip route
16.	If you assigned a virtual hardware address to VLAN 2 on an internal route processor, how do you view this configuration? (Choose all that apply.) show virtual address show vlan 2 show interface vlan 2 show run
17.	Which command displays the BIA address of a VLAN on an internal route processor? show virtual address show vlan 2 show interface vlan 2 show run
18.	What type of link must be used on a switch port if you are running ISL on an external router interface? Access Trunk Virtual Ethernet
19.	Which of the following sets VLAN 3 to run ISL on an external route processor with one FastEthernet interface? (config)#encap isl vlan3 (config)#encap vlan3 isl (config-if)#encap isl 3 (config-if)encap 3 isl
20.	Which of the following is true regarding inter-VLAN routing using an external router? Only ISL can be used with gigabit Ethernet. ISL or 802.1Q can be used only with gigabit Ethernet. Only 802.1Q can be used with gigabit Ethernet. ISL or 802.1Q can be used with gigabit and Fast Ethernet.

Answers

1.	C The session command is used to create a session from the switch CLI to the RSM CLI.
2.	D The show module command displays the type of cards in each slot, the hardware address, and the serial number of each card.
3.	A The command mac-address mac_address is used under the interface vlan # command to set a virtual MAC address to a VLAN interface.
4.	A, C The frame-tagging encapsulation methods are dot1Q and ISL. dot1Q is the IEEE standard for frame tagging between disparate systems. ISL is a Cisco proprietary FastEthernet and Gigabit Ethernet frame-tagging method.
5.	B, D If you have an external router, you certainly can have a router interface for every single VLAN. However, you can also have one FastEthernet or Gigabit Ethernet interface connected into a switch running a trunking protocol that will provide inter-VLAN routing.
6.	B You can create subinterfaces on a FastEthernet or Gigabit Ethernet modular interface by using the type slot/port.subinterface_number command.
7.	A Layer 2 switches break up only collision domains by default. A layer 3 device is needed for inter-VLAN routing. An external route processor can not attach to the backplane of a switch, only into a switch port.
8.	D At the moment, there are a variety of switches available, and the modular nature of some larger switches such as the 6500 makes them ideal as core switches. But the 2950 is a wonderful and powerful access layer switch. So currently, there is no clear distinction—just pick one at the scale and price that suits your needs.
9.	D All internal route processors use IOS-based commands.
10.	C, D The command set ip route default and the command set ip route 0.0.0.0 are the same command and can be used to set a default gateway on a 4000 series switch.
11.	C The command interface vlan # is used to create a VLAN interface. The IP address of the interface is then configured with the ip address command.
12.	C An external route processor configured with subinterfaces does not need a shutdown performed on each subinterface, only the main interface. However, an internal route processor must have a no shutdown command performed under every VLAN interface.
13.	B Directly connected subnets appear in the routing table as directly connected—so no routing protocol is needed unless you need to get to non–directly connected subnets.
14.	B The commands are the same as they are for any Cisco IOS router, and show ip route is used to view the current routing table entries.
15.	D To view the routing table on the internal processor, use the show ip route command, just as you would with any IOS-based router.
16.	C, D The commands show interface vlan # and show running-config display the virtual hardware address of an interface, if set.
17.	C The command show interface vlan vlan# shows both the virtual MAC address, if set, and the burned-in address (BIA) of the VLAN interface.
18.	B A switch port must be configured with a trunking protocol to run ISL inter-VLAN communication to a single router interface.
19.	C The subinterface command encapsulation type vlan is used to set the VLAN ID and encapsulation method on a subinterface.
20.	D ISL and 802.1Q may be configured on both Fast and Gigabit Ethernet links, but not on 10BaseT.