ITP4926 Tutorial 1

1. What are the three layers in hierarchical network design? Suggest what kinds of network equipment should be used in each layer.
Layer         Network equipment
1                 Core Layer Router / L3 Switch (High Speed)
2                 Distribution Layer Router / L3 Switch
3                  Access Layer L2 Switch

2. What is a converged network?
Converged network integrates three network, data network, voice network and video network into one single network.

3. Circle all the collision domains and label each collision domain with a “C”. Circle all the broadcast
domains and label them with a “B”.

4. What are the 2 switch packet forwarding methods? Briefly explain each of them.

•  Cut-Through Switching allows the switch to forward the frame before it is entirely received. At a minimum, the destination address of the frame must be read before the frame can be forwarded.

•  Store-and- forward switch receives the entire frame, computes the CRC, and checks the frame length, if the CRC and frame length are valid the switch is then forwarded out the correct port.

5. (a) In order to configure a new switch, what kind of cable (straight-through, cross-over, rollover,

coaxial) is needed? State the ports that should be connected.

        A rollover cable is needed to connect the com-port of the PC to the console port of the router.

(b) Give the name of terminal emulation software that can be used as an emulation software to

establish a console session between a PC and a Cisco switch.

          putty / hyper-terminal

6. (a) Identify the different router command modes shown below.

User EXEC mode

Privileged EXEC mode

Global configuration mode

Specific configuration mode

(b) What command you should type in order to bring you from the User EXEC Mode to the Privileged EXEC Mode?

           enable/ en

(c) What command you should type in order to bring you from the Privileged EXEC Mode to the

Global Configuration Mode?

           config terminal / conf t

(d) What command you should type in order to change the name of the switch to SW1? In which

mode should this be typed?

            hostname SW1 , Global Configuration Mode

(e) Briefly describe the usage of the “show running-config” command.

            displays the active settings stored in the RAM

7. (a) In a switch, where is the following configuration files stored?

 running-configuration RAM

 startup-configuration NVRAM

(b) Write down the Cisco command for the following tasks:

(i) Save the running-configuration for use in the next reboot of the router.

        copy run start

(ii) Restore the startup-configuration into memory.

         copy start run

(iii) Set the encrypted enable password as swpasswd.

          enable secret swpasswd

(iv) Set the password for console port as conpasswd. [Only line need login]

          line console 0

           password conpasswd

            login

(v) Set the password for remote connection (telnet) as telpasswd.

             line vty 0 15

             password telpasswd

             login

(vi) Check the hardware configuration of a switch.

             show version

(vii) Display the Content Addressable Memory (CAM) table (i.e. MAC address table) of a switch.

               show mac-address- table // show mac address table

(viii) Reset a switch to factory default configuration

                erase startup-config 

                delete flash:vlan.dat 

                reload

8. Port security is a feature provided in a Cisco switch.

(a) How does port security access control?

Port security limits the number of valid MAC addresses allowed on a port.

The port does not forward packets with source addresses outside the group of defined addresses.

(b) List THREE violation modes that can be configure for port security in a Cisco switch.

Protect

Restrict

Shutdown

(c) Write down the commands to configure port security to all ports of a 24-port Cisco switch with

the following requirements, [access mode  port security]

•  Each port can only connect to ONE PC
•  The switch should learn the MAC address automatically when the PC attaches to the switch.
•  For port security violation, the port should shutdown.

interface range fa0/1 – 24

switchport mode access

switchport port-security

switchport port-security mac-address sticky

Networking Modules Refer to document (Keep update)

copy the "document name" and google it will have surprised!!!Or else search the number given ;)


ITP4928
Lab                                                          Correspond to  Cisco Document / course materials
Lab 1  Review of Networking Configurations   --> 1.4.1.2
Lab 2 Configuring PAP and CHAP Authentication  -->   3.3.2.7
Lab 3 Packet Tracer – Troubleshooting PPP with Authentication  --> 3.4.1.4

ITE4904 Preparation of CCNA Certification Examination
Lab 0 Pre-lab (listed in this blog)
Lab 1.1 Packet Tracer - Configuring IPv6 Addressing --> 7.2.4.9
Lab 1.2 Packet Tracer - Implementing a Subnetted IPv6 Addressing Scheme --> 8.3.1.4
Lab 1.3 Packet Tracer - Configuring IPv6 Static and Default Routes Instructions --> 6.2.4.4/ 2.2.4.4

Switching.Routing Quiz

01 What is the function of a Layer 2 switch?

a. duplicates the electrical signal of each frame to every port
b. forwards data based on IP address

c. learns the port assigned to host by examining the destination MAC address 

d. determines which interface is used to forward a frame based on the destination MAC address==

02 What does the term "port density" represent for an Ethernet switch?

a. the memory space that is allocated to each switch port

b. the speed of each port

c. the numbers of hosts that are connected to each switch port

d. the number of available ports ==

03 A switch has a valid operating system and a configuration stored in NVRAM. When the switch boots up, which mode will display?

a. setup mode

b. global configuration mode

c. user EXEC mode 

d. ROM monitor mode

04 Which action will bring an error-disabled switch port back to an operational state?

a. Issue the shutdown and the no shutdown interface commands.==

b. issue the switchport mode access command on the interface. 

c. Remove and reconfigure port security on the interface.

d. Clear the MAC address table on the switch.

05 What type of cable is used between a PC and a console port of a switch?

a. Rollover

b. Cross-over 

c. Straight-through

d. telephone

06 Which method would mitigate a MAC address flooding attack?

a. increasing the speed of switch ports

b. increasing the size of the CAM table

c. using ACLs to filter broadcast traffic on the switch

d. configuring port security 

07 The following diagram shows the topology of a company.

Assume that PCA is forwarding a frame to PCC.
Which PC(s) will receive the frame if the MAC address tables on switch SW1 and SW2 are empty?

a. PCB only

b. PCB, PCC and PCD 

c. PCC only

d. PCC and PCD

08 The network administrator enters the following commands on a Cisco switch:

Switch(config)#interface vlan 1
Switch(config-if)#ip address 192.168.1.2 255.255.255.0
Switch(config-if)#no shutdown

What is the effect of entering these commands?

a. Users on the 192.168.1.0/24 subnet are able to ping the switch at IP address 192.168.1.2.

b. The address of the default gateway for this LAN is 192.168.1.2/24.

c. The switch is able to forward frames to remote networks.

d. All devices attached to this switch must be in 192.168.1.0/24 subnet to communicate. 

09 Which of the following connection method is used to access a new Cisco switch for the first configuration?

a. Use Secure Shell(SSH) to remotely access the switch through the network​.

b. Use Telnet to remotely access the switch through the network.

c. Use the AUX port to locally access the switch from a serial or USB interface of the PC.

d. Use the console port to locally access the switch from a serial interface of the PC. 

10 Which of the following is the characteristics of flash memory?

a. The contents of flash may be lost during a power cycle.

b. Flash receives a copy of the IOS from RAM when a device is powered on.

c. Flash provides nonvolatile storage. 

d. Flash is a component in Cisco switches but not in Cisco routers. 

11 What information is added to the switch table from incoming frames?

a. source IP address and incoming port number

b. source MAC address and incoming port number

c. destination IP address and incoming port number

d. destination MAC address and incoming port number 

12 Which of the following features is enabled when the mdix auto command has been issued on an interface on a switch?

a. automatically detects interface speed

b. automatically detects copper cable type

c. automatically assigns the first detected MAC address to an interface 

d. automatically detects duplex settings

13 What is the function of the access layer in the hierarchical network design?

a. aggregates Layer 3 routing boundaries

b. aggregates Layer 2 broadcast domains 

c. provides high availability

d. provides access to the user

14 Which statement is true about the running configuration file in a Cisco IOS device?

a. It should be deleted using the erase running-config command.

b. It is automatically saved when the router reboots.

c. It is stored in NVRAM. 

d. It affects the operation of the device immediately when modified.

15 Which protocol or service sends broadcasts containing the Cisco IOS software version of the sending device, and the packets of which can be captured by malicious hosts on the network?

a. CDP 

b. DNS

c. SSH

d. DHCP

D D C A A

D B A D C

B B D D A


01  Which of the following is a correct statement about VLAN implementation?

a. The size of the collision domain is reduced. 

b. The network load increases significantly because of added trunking information.

c. The number of required switches in a network decreases.

d. Devices in one VLAN do not hear the broadcasts from devices in another VLAN.

02 Which command is used to remove only VLAN 20 from a switch?

a. no vlan 20 

b. delete flash:vlan.dat

c. no switchport access vlan 20

d. delete vlan.dat

03 

Refer to the above diagram. A frame is traveling between PC-A and PC-B through the switch.
Which statement is true concerning VLAN tagging of the frame.

a. A VLAN tag is added when the frame is accepted by the switch.

b. A VLAN tag is added when the frame leaves PC-A.

c. A VLAN tag is added when the frame is forwarding out the port to PC-B. 

d. No VLAN tag is added to the frame.

04 Which of the followings are the commands to remove Fast Ethernet port fa0/1 from VLAN 2 and assign it to VLAN 3?

a. Switch(config)# interface f0/1
    Switch(config-if)# no shutdown

b. Switch(config)# no vlan 2
    Switch(config)# vlan 3 

c. Switch(config)# interface f0/1
    Switch(config-if)# switchport trunk native vlan 3

d. Switch(config)# interface f0/1
    Switch(config-if)# switchport access vlan 3

05 What happens to port that is assigned to VLAN 10 when the administrator deletes VLAN 10 from the switch?

a. The port become inactive.

b. The port creates the VLAN again.

c. The port automatically associate itself with the native VLAN. 

d. The port goes back to the default VLAN.

06 

Refer to the exhibit. What will the router do with a packet that has a destination IP address of 192.168.12.227?

a. Drop the packet. 

b. Send the packet out the Serial0/0/0 interface.

c. Send the packet out the GigabitEthernet0/0 interface.

d. Send the packet out the GigabitEthernet0/1 interface.

07 Consider the following routing table entry for the router R1:

D 10.1.1.0/24 [90/2170112] via 209.165.200.226, 00:00:05, Serial0/0/0

What is the significance of the Serial0/0/0?

a. It is the interface that the routing update was learned.

b. It is the interface on the next-hop router when the destination IP address is on the 10.1.1.0/24 network.

c. It is the interface on the router that is directly connected to the 10.1.1.0/24 network.

d. It is the exit interface on R1 to the network 10.1.1.0. 

08 

Refer to the diagram. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up?

a. IPv6 enable

b. no shutdown 

c. end

d. clockrate 128000

09 A network administrator configures the interface fa0/0 on the router R1 with the command ip address 172.16.1.254 255.255.255.0. However, when the administrator issues the command show ip route, the routing table does not show the directly connected network. What is the possible cause of the problem?

a. No packets with a destination network of 172.16.1.0 have been sent to R1.

b. The configuration needs to be saved first. 

c. The interface fa0/0 has not been activated.

d. The subnet mask is incorrect for the IPv4 address.

10 What is a characteristic of an IPv4 loopback interface on a Cisco IOS router?​

a. It is a logical interface internal to the router.

b. Only one loopback interface can be enabled on a router.​

c. It is a physical interface. 

d. The no shutdown command is required to place this interface in an UP state.​

11 

Refer to the exhibit. A network administrator is verifying the configuration of inter-VLAN routing. Users complain that PC2 cannot communicate with PC1. Based on the output, what is the possible cause of the problem?

a. The no shutdown command is not entered on subinterfaces. 

b. The encapsulation dot1q 5 command contains the wrong VLAN.

c. There is no IP address configured on the interface Gi0/0.

d. Gi0/0 is not configured as a trunk port.

12 

Refer to the exhibit. A network administrator needs to configure router-on-a-stick for the networks that are shown. How many subinterfaces will be created on the router if each VLAN that is shown is to be routed and each VLAN has its own subinterface?

a. 4

b. 2

c. 1

d. 3 

13 Which type of Inter-VLAN communication design requires the configuration of multiple subinterface?

a. router on a stick 

b. legacy inter-VLAN routing

c. routing for the management VLAN

d. routing via a multilayer switch

14 

Refer to the exhibit. A network administrator has configured router CiscoVille with the above commands to provide inter-VLAN routing. What command will be required on a switch that is connected to the Gi0/0 interface on router CiscoVille to allow inter-VLAN routing?

a. no switchport

b. switchport mode trunk 

c. switchport mode access

d. switchport mode dynamic desirable

15 A school uses VLAN 10 for the classroom network and VLAN 20 for the office network.

What is needed to enable communication between these two VLANs while using legacy inter-VLAN routing?

a. A router with at least two LAN interfaces should be used.

b. A router with one VLAN interface is needed to connect to the SVI on a switch.

c. Two groups of switches are needed, each with ports that are configured for one VLAN.

d. A switch with a port that is configured as trunk is needed to connect to a router. 

D A D D A

B D B C A

B A A B A