Introduction to Network - Course 7

6.3.2.7 Lab - Exploring Router Physical Characteristics

Lab - Exploring Router Physical Characteristics

Topology

Objectives

Part 1: Examine Router External Characteristics

Part 2: Examine Router Internal Characteristics Using Show Commands

Background / Scenario

In this lab, you will examine the outside of the router to become familiar with its characteristics and components, such as its power switch, management ports, LAN and WAN interfaces, indicator lights, network expansion slots, memory expansion slots, and USB ports.

You will also identify the internal components and characteristics of the IOS by consoling into the router and issuing various commands, such as show version and show interfaces, from the CLI.

Note: The routers used with CCNA hands-on labs are Cisco 1941 Integrated Services Routers (ISRs) with Cisco IOS Release 15.2(4)M3 (universalk9 image). Other routers and Cisco IOS versions can be used. Depending on the model and Cisco IOS version, the commands available and output produced might vary from what is shown in the labs.

Note: Make sure that the routers have been erased and have no startup configurations. If you are unsure, contact your instructor.

Required Resources

·         1 Router (Cisco 1941 with Cisco IOS Release 15.2(4)M3 universal image or comparable)

·         1 PC (Windows 7 or 8 with terminal emulation program, such as Tera Term)

·         Console cables to configure the Cisco IOS devices via the console ports

Part 1:     Examine Router External Characteristics

Use the images below, as well as your own direct inspection of the backplane of a Cisco router, to answer the following questions. Feel free to draw arrows and circle the areas of the image that correctly identify the parts.

Note: The router depicted in the images below is a Cisco 1941 router, which may be different from the make and model of the routers in your particular academy. You can find device information and specifications for the Cisco 1941 series routers at the Cisco.com website. Additional information, including answers to many of the questions below can be found here:

http://www.cisco.com/en/US/prod/collateral/routers/ps10538/data_sheet_c78_556319.html

Step 1:     Identify the various parts of a Cisco router.

The image shown in this step is of the backplane of a Cisco 1941 ISR. Use it to answer the questions in this step. In addition, if you are examining a different model router, a space has been provided here for you to draw the backplane and identify components and interfaces as specified in the questions that follow.

a.     Circle and label the router’s power switch. Is the power switch on your router in the same area as the router depicted in the image?

_____________________yes_______________________________________________________________

b.     Circle and label the management ports. What are the built-in management ports? Are the management ports the same on your router? If not, how are they different?

________yes____________________________________________________________________________

c.     Circle and label the router’s LAN interfaces. How many LAN interfaces does the router in the image have and what is the interface technology type? Are the LAN interfaces the same on your router? If not, how are they different?

____________________________________________________________________________________

d.     Circle and label the router’s WAN interfaces. How many WAN interfaces does the router in the image have and what is the interface technology type? Are the WAN interfaces the same on your router? If not, how are they different?

____________________________________________________________________________________

e.     The Cisco 1941 ISR is a modular platform and comes with module expansion slots for varied network connectivity requirements. Circle and label the module slots. How many module slots are there? How many are used? What type of module expansion slots are they? Are the module slots the same on your router? If not, how are they different?

_____________Three modular slots, 1 is used.  _______________________________________________________________________

f.      The Cisco 1941 router comes with CompactFlash memory slots for high speed storage. Circle and label the CompactFlash memory slots. How many memory slots are there? How many are used? How much memory can they hold? Are the memory slots the same on your router? If not, how are they different?

__________The compact flash memory is under the HWIC slots which are above the on and off switch__________________________________________________________________________

g.     The Cisco 1941 router comes with USB 2.0 ports. The built-in USB ports support eToken devices and USB flash memory. The USB eToken device feature provides device authentication and secure configuration of Cisco routers. The USB flash feature provides optional secondary storage capability and an additional boot device. Circle and label the USB ports. How many USB ports are there? Are there USB ports on your router?

_______There are 2 USB ports

_____________________________________________________________________________

h.     The Cisco 1941 router also comes with a mini-B USB console port. Circle and label the mini-B USB console port.

__________There is 1 mini USB port under the 3^rd HWIC slot and next to the RJ45 port__________________________________________________________

Step 2:     Examine the router activity and status lights.

The following images highlight the activity and status lights of the front panel and backplane of a powered up and connected Cisco 1941 ISR.

Note: Some of the indicator lights are obscured from view in the image of the backplane of the Cisco 1941 router below.

a.     In the top image above, examine the indicator lights on the front panel of the router? The lights are labeled SYS, ACT, and POE. What do the labels refer to? What do the lights in the image indicate about the status of the router? These labels would be readable if they were not lit.

__________Lights show the router is powered on and it has network activity__________________________________________________________________________

____________________________________________________________________________________

____________________________________________________________________________________

b.     In the backplane image above, examine the indicator lights on the router. There are three visible activity lights, one for each of the connected interfaces and management ports. Examine the interface lights on your router. How are the lights labeled, and what is their meaning?

________Shows the Ethernet interfaces are active and the console management ports are enabled and active. ______L:linked S:send EN:enable______________________________________________________________________

____________________________________________________________________________________

____________________________________________________________________________________

c.     Aside from the management ports and network interfaces, what other indicator lights are on the backplane of the router and what might their purpose be?

______There are lights for the compactflash memory slots______________________________________________________________________________

____________________________________________________________________________________

____________________________________________________________________________________

Part 2:     Examine Router Internal Characteristics Using Show Commands

Step 1:     Establish a console connection to the router and use the show version command.

a.     Using Tera Term, console into the router and enter privileged EXEC mode using the enable command:

Router> enable

Router#

b.     Display information about the router by using the show version command. Use the Spacebar on the keyboard to page through the output.

Router# show version

Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.2(4)M3, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2011 by Cisco Systems, Inc.

Compiled Thu 26-Jul-12 19:34 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M15, RELEASE SOFTWARE (fc1)

Router uptime is 1 day, 14 hours, 46 minutes

System returned to ROM by power-on

System restarted at 07:26:55 UTC Mon Dec 3 2012

System image file is "flash0:c1900-universalk9-mz.SPA.152-4.M3.bin"

Last reload type: Normal Reload

Last reload reason: power-on

<output omitted>

If you require further assistance please contact us by sending email to

export@cisco.com.

Cisco CISCO1941/K9 (revision 1.0) with 487424K/36864K bytes of memory.

Processor board ID FGL16082318

2 Gigabit Ethernet interfaces

2 Serial(sync/async) interfaces

1 terminal line

1 Virtual Private Network (VPN) Module

DRAM configuration is 64 bits wide with parity disabled.

255K bytes of non-volatile configuration memory.

250880K bytes of ATA System CompactFlash 0 (Read/Write)

<output omitted>

Technology Package License Information for Module:'c1900'

-----------------------------------------------------------------

Technology    Technology-package           Technology-package

              Current       Type           Next reboot

------------------------------------------------------------------

ipbase        ipbasek9      Permanent      ipbasek9

security      securityk9    Permanent      securityk9

data          None          None           None

Configuration register is 0x2102

c.     Based on the output of the show version command, answer the following questions about the router. If you are examining a different model router, include the information about it here.

1)    What is the version of the Cisco IOS and what is the system image filename?

____________ flash0:c1900-universalk9-mz.SPA.151-1.M4.bin

2)    What is the Bootstrap program version in ROM BIOS?

______ System Bootstrap, Version 15.1(4)M4__________________________________________________________________________

3)    How long has the router been running without a restart (also known as its uptime)?

_____ 6 minutes, 4 seconds___________________________________________________________________________

4)    How much dynamic random-access memory (DRAM) memory does the router have?

__________ 491520K/32768K

5)    What is the router’s processor board ID number?

______________ FTX152400KS__________________________________________________________________

6)    What network interfaces does the router have?

________ 2 Gigabit Ethernet interfaces________________________________________________________________________

7)    How much CompactFlash memory for IOS storage is there?

________ 249856K bytes of ATA System CompactFlash 0_______________________________________________________________________

8)    How much nonvolatile random-access memory (NVRAM) memory for configuration file storage is there?

__255K bytes of non-volatile configuration memory_____________________________________________________________________________

9)    What is the setting of the configuration register?

_____0x2102_________________________________________________________________________

Step 2:     Use the show interface command to examine the network interfaces.

a.     Use the show interface gigabitEthernet 0/0 command to see the status of the Gigabit Ethernet 0/0 interface.

Note: After typing part of the command, for example, show interface g, you can use the Tab key on your keyboard to complete the gigabitEthernet command parameter.

Router# show interface gigabitEthernet 0/0

GigabitEthernet0/0 is administratively down, line protocol is down

  Hardware is CN Gigabit Ethernet, address is 442b.031a.b9a0 (bia 442b.031a.b9a0)

  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full Duplex, 100Mbps, media type is RJ45

  output flow-control is unsupported, input flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     3 packets input, 276 bytes, 0 no buffer

     Received 0 broadcasts (0 IP multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

b.     Given the output of the show interface gigabitEthernet 0/0 command depicted above, or using the output from your router, answer the following questions:

What is the hardware type and MAC address of the Gigabit Ethernet interface?

_______bia 0060.479a.2501_____________________________________________________________________________

What is the interface media type? Is the interface up or down?

________GigabitEthernet0/0 is administratively down, line protocol is down____________________________________________________________________________

c.     Use the show interfaces serial 0/0/0 command to view the status of the Serial 0/0/0 interface.

Router# show interface serial 0/0/0

Serial0/0/0 is administratively down, line protocol is down

  Hardware is WIC MBRD Serial

  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation HDLC, loopback not set

  Keepalive set (10 sec)

  Last input 07:41:21, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     1 packets input, 24 bytes, 0 no buffer

     Received 1 broadcasts (0 IP multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 2 interface resets

     0 unknown protocol drops

     0 output buffer failures, 0 output buffers swapped out

     1 carrier transitions

     DCD=down  DSR=down  DTR=down  RTS=down  CTS=down

d.     Given the output command depicted above, answer the following questions:

What is the frame encapsulation type?

___ Encapsulation HDLC________________________________________________________________________________

What is the hardware type? Is the interface up or down?

______Serial0/0/0 is administratively down, line protocol is down_____________________________________________________________________________

Reflection

1.     Why might you need to use an EHWIC expansion slot?

_________We may nedd to have a WAN connection to your ISP over a WAN interface technology that doesn’t come with the router by default. ______________________________________________________________________________

2.     Why might you need to upgrade the Flash memory?

_______We may want to store an addictional IOS images file or upgrade to a larger IOS image________________________________________________________________________________

3.     What is the purpose of the mini-USB port?

__________The purpose of the mini-USB port is to give you the ability to console into the router if we do not have a COM serial port on my laptop or computer._____________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

4.     What is the purpose of the ISM/WLAN indicator light on the backplane of the router? What does it refer to?

_____The CISCO 1941 router can support a CISCO Internal Service Module that can enhance the intelligence and abilities of the router to perform activities like intrusion prevention scanning. The CISCO 1941 router can also be equipped with a Wireless LAN card for supporting wireless local area networks.__________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

http://erdoganakbiyik.blogspot.com/
https://www.youtube.com/channel/UCDsUnmBfVdEPkcC8FlzPKcg

Introduction to Network - Course 6

5.2.17 Lab – Viewing the Switch MAC Address Table

Topology

Addressing Table

Device	Interface	IP Address	Subnet Mask	Default Gateway
S1	VLAN 1	192.168.1.11	255.255.255.0	N/A
S2	VLAN 1	192.168.1.12	255.255.255.0	N/A
PC-A	NIC	192.168.1.3	255.255.255.0	N/A
PC-B	NIC	192.168.1.2	255.255.255.0	N/A

Objectives

Part 1: Build and Configure the Network

Part 2: Examine the Switch MAC Address Table

Background / Scenario

The purpose of a Layer 2 LAN switch is to deliver Ethernet frames to host devices on the local network. The switch records host MAC addresses that are visible on the network, and maps those MAC addresses to its own Ethernet switch ports. This process is called building the MAC address table. When a switch receives a frame from a PC, it examines the frame’s source and destination MAC addresses. The source MAC address is recorded and mapped to the switch port from which it arrived. Then the destination MAC address is looked up in the MAC address table. If the destination MAC address is a known address, then the frame is forwarded out of the corresponding switch port associated with that MAC address. If the MAC address is unknown, then the frame is broadcasted out of all switch ports, except the one from which it came. It is important to observe and understand the function of a switch and how it delivers data on the network. The way a switch operates has implications for network administrators whose job it is to ensure secure and consistent network communication.

Switches are used to interconnect and deliver information to computers on local area networks. Switches deliver Ethernet frames to host devices identified by network interface card MAC addresses.

In Part 1, you will build a multi-switch topology with a trunk linking the two switches. In Part 2, you will ping various devices and observe how the two switches build their MAC address tables.

Note: The switches used are Cisco Catalyst 2960s with Cisco IOS Release 15.0(2) (lanbasek9 image). Other switches and Cisco IOS versions can be used. Depending on the model and Cisco IOS version, the commands available and output produced might vary from what is shown in the labs.

Note: Make sure that the switches have been erased and have no startup configurations. If you are unsure contact your instructor.

Required Resources

·         2 Switches (Cisco 2960 with Cisco IOS Release 15.0(2) lanbasek9 image or comparable)

·         2 PCs (Windows 7 or 8 with terminal emulation program, such as Tera Term)

·         Console cables to configure the Cisco IOS devices via the console ports

·         Ethernet cables as shown in the topology

Note: The Fast Ethernet interfaces on Cisco 2960 switches are autosensing and an Ethernet straight-through cable may be used between switches S1 and S2. If using another model Cisco switch, it may be necessary to use an Ethernet crossover cable.

Part 1:     Build and Configure the Network

Step 1:     Cable the network according to the topology.

Step 2:     Configure PC hosts.

Step 3:     Initialize and reload switches as necessary.

Step 4:     Configure basic settings for each switch.

a.     Configure device name as shown in the topology.

b.     Configure IP address as listed in Addressing Table.

c.     Assign cisco as the console and vty passwords.

d.     Assign class as the privileged EXEC password.

Part 2:     Examine the Switch MAC Address Table

A switch learns MAC addresses and builds the MAC address table, as network devices initiate communication on the network.

Step 1:     Record network device MAC addresses.

a.     Open a command prompt on PC-A and PC-B and type ipconfig /all. What are the Ethernet adapter physical addresses?

PC-A MAC Address:      192.168.1.3

PC-B MAC Address:      192.168.1.2

b.     Console into switch S1 and S2 and type the show interface F0/1 command on each switch. On the second line of command output, what is the hardware addresses (or burned-in address [bia])?

S1 Fast Ethernet 0/1 MAC Address:    0023.abf6.2981

S2 Fast Ethernet 0/1 MAC Address:    0013.c4ea.d183

Step 2:     Display the switch MAC address table.

Console into switch S2 and view the MAC address table, both before and after running network communication tests with ping.

a.     Establish a console connection to S2 and enter privileged EXEC mode.

b.     In privileged EXEC mode, type the show mac address-table command and press Enter.

S2# show mac address-table

Even though there has been no network communication initiated across the network (i.e., no use of ping), it is possible that the switch has learned MAC addresses from its connection to the PC and the other switch.

Are there any MAC addresses recorded in the MAC address table?

    Yes

What MAC addresses are recorded in the table? To which switch ports are they mapped and to which devices do they belong? Ignore MAC addresses that are mapped to the CPU.

If you had not previously recorded MAC addresses of network devices in Step 1, how could you tell which devices the MAC addresses belong to, using only the output from the show mac address-table command? Does it work in all scenarios?

You will be able to tell because if you follow the topology there will be one device attached to each port so you can follow the Ethernet cable from the port back to the device.

Step 3:     Clear the S2 MAC address table and display the MAC address table again.

a.     In privileged EXEC mode, type the clear mac address-table dynamic command and press Enter.

S2# clear mac address-table dynamic

b.     Quickly type the show mac address-table command again. Does the MAC address table have any addresses in it for VLAN 1? Are there other MAC addresses listed?

   It has one VLAN 1 MAC address but it is missing the other. The PC-B is also not shown on the MAC address table either.

Wait 10 seconds, type the show mac address-table command, and press Enter. Are there new addresses in the MAC address table?     Yes

Step 4:     From PC-B, ping the devices on the network and observe the switch MAC address table.

a.     From PC-B, open a command prompt and type arp -a. Not including multicast or broadcast addresses, how many device IP-to-MAC address pairs have been learned by ARP?

   None were learned by ARP

b.     From the PC-B command prompt, ping PC-A, S1, and S2. Did all devices have successful replies? If not, check your cabling and IP configurations.

    Yes

c.     From a console connection to S2, enter the show mac address-table command. Has the switch added additional MAC addresses to the MAC address table? If so, which addresses and devices?

    Yes it added Fa0/1 with a mac address of e840.f2c2.d019

From PC-B, open a command prompt and retype arp -a. Does the PC-B ARP cache have additional entries for all network devices that were sent pings?

     Yes

Reflection

On Ethernet networks, data is delivered to devices by their MAC addresses. For this to happen, switches and PCs dynamically build ARP caches and MAC address tables. With only a few computers on the network this process seems fairly easy. What might be some of the challenges on larger networks?

            

                Some of the challenges on larger networks would be there are many devices that you will need to look through. And finding a specific devices might take some time when looking through a network with hundreds of devices.

http://erdoganakbiyik.blogspot.com/
https://www.youtube.com/channel/UCDsUnmBfVdEPkcC8FlzPKcg

Project #5 at Java Programming

import java.util.*;
// This program was made by Erdogan Akbiyik

/* Project 5 Polynomial Program - This program was created in purpose to find the solution of the mathematical operations.
*/

import java.lang.Math;

// In this program, we will use the result of the given function values.
// We write the methods according to the given values.

class Polynomial {
   private double[] coeff;
   private int degree;
   public Polynomial() {
      degree = 0;
      coeff = new double[degree+1];
      coeff[0] = 0;
   }
   public Polynomial(String coeff) {
      setCoeff(coeff);
   }
   public double[] getCoeff() {
      return coeff;
   }
   public int getDegree() {
      return degree;
   }
   public void setCoeff(String coeff) {
      String[] arr = coeff.split(" ");
      this.degree = arr.length-1;
      this.coeff = new double[degree+1];
      for(int i=0;i<arr.length;i++)
      {
         double d = Double.parseDouble(arr[i]);
         this.coeff[i] = d;
      }
   }
   public Polynomial add(Polynomial p)
   {
      Polynomial r = new Polynomial();
      r.degree = (this.degree < p.degree) ? p.degree : this.degree;
      r.coeff = new double[r.degree+1];
      for(int i = 0; i<r.coeff.length;i++) {
         if(i<this.coeff.length && i<p.coeff.length)
         {
            r.coeff[i] = this.coeff[i] + p.coeff[i];
         }
         else if(i<this.coeff.length)
         {
            r.coeff[i] = this.coeff[i];
         }
         else if(i<p.coeff.length)
         {
            r.coeff[i] = p.coeff[i];
         }
      }
      return r;   // returning the value if its in the current r of Polynomial
   }
   public String toString()
   {
      String r = "f(x) = " + this.coeff[0];
      for(int i=1;i<this.coeff.length;i++)
      {
         if(this.coeff[i]>=0) r+= "+";
         r += this.coeff[i] + "x^"+i;
      }
      return r;
   }
   public double evaluate(double x)
   {
      double r = 0;
      for(int i=0;i<this.coeff.length;i++)
      {
         r+= Math.pow(x,i)*this.coeff[i];
      }
      return r;   // returning the value if its in the current r of evaluate
   }
   public Polynomial derivative()
   {
      Polynomial r = new Polynomial();
      r.degree = this.degree-1;
      r.coeff = new double[r.degree+1];
      for(int i=0;i<r.coeff.length;i++)
      {
         r.coeff[i] = this.coeff[i+1]*(i+1);
      }
      return r;   // returning the value if its in the current r of Polynomial derivative
   }
   public double findRoot(double x)
   {
      Polynomial deriv = this.derivative();
      double h = this.evaluate(x) / deriv.evaluate(x);
      while (Math.abs(h) >= 0.00001)
      {
         h = this.evaluate(x) / deriv.evaluate(x); 
         x = x - h;
      }
      return x;    // returning the value if its in the current x of Root
   
   // Thanks for using my program!!!
   
   }
 }


//Test Driver for polynomial project
//As you build your class comment out parts of the switch
//so that you can check each case

//Build the constructors and the toString methods first
//Build stub methods for others not working yet

import java.util.Scanner;

class PolynomialDriver {
   public static void main(String args []) {
      Scanner input = new Scanner(System.in);
      System.out.println("##Constructor Tests##");
      //Test default constructor
      Polynomial testValue1 = new Polynomial();
      //Test toString method
      System.out.println("Your test polynomial is " + testValue1); //should be f(x) = 0.0
      //Test constructor
      Polynomial testValue2 = new Polynomial("0 1 -3 0 1 2 0 0");
      System.out.println("Your 2nd test polynomial is " + testValue2);
      System.out.println("It's degree is : " + testValue2.getDegree());  // should be 5
      System.out.println();
      //Loop to repeat menu until quit is chosen
      int choice = 0;
      while (choice != 7) {
         choice = menu();
         switch(choice) {
            case 1:
               System.out.println("Display Polynomials");
               System.out.println("#1  :  " + testValue1);
               System.out.println("#2  :  " + testValue2);
               System.out.println();
               break;
            case 2: //input values with single spaces between values
               System.out.println("Input New Polynomials");
               String coeff;
               System.out.print("Enter values for first Polynomial :");
               coeff = input.nextLine();
               testValue1.setCoeff(coeff);
               System.out.println();
               System.out.print("Enter values for second Polynomial :");
               coeff = input.nextLine();
               testValue2.setCoeff(coeff);
               System.out.println();
               break;
            case 3: //call add method
               System.out.println("Add Polynomials");
               System.out.println("The Sum of \t" + testValue1);
               System.out.println("    and    \t" + testValue2);
               System.out.println("    is :   \t" + testValue1.add(testValue2));
               System.out.println();
               break;
            case 4:
               System.out.println("Evaluate Polynomial #1");
               System.out.println("Enter a value for x to evaluate f(x) for Polynomial #1");
               double value;
               value = input.nextDouble();
               input.nextLine(); //empty the buffer
               System.out.println("When x = " + value + " for " + testValue1);
               System.out.println("f(x) = " + testValue1.evaluate(value));
               System.out.println();
               break;
            case 5:
               System.out.println("Derivative of Polynomial #1");
               System.out.println("The derivative of " + testValue1);
               System.out.println("is  : " + testValue1.derivative());
               System.out.println();
               break;
            case 6:
               System.out.println("Find Root of Polynomial #1");
               System.out.println("Enter a value to be the initial guess for a root as");
               System.out.println("needed to perform the Newton-Raphson method : ");
               value = input.nextDouble();
               input.nextLine(); //empty the buffer
               System.out.println("Root of  " + testValue1);
               System.out.println("found at x = " + testValue1.findRoot(value));
               System.out.println();             
               break;
            case 7:
               System.out.println("I hope that you enjoyed this program!");
          }
      }// end while
 
   }
 
   //Method to call menu
   //Exceptions not set up here.  Only integers will work
   public static int menu() {
      int choice = 0;
      Scanner input = new Scanner(System.in);
      while(choice < 1 || choice > 7) {
         System.out.println("Please choose from the following: ");
         System.out.println("\t#1 Display two polynomials stored");
         System.out.println("\t#2 Input two new polynomials");
         System.out.println("\t#3 Add polynomials");
         System.out.println("\t#4 Evaluate polynomial #1 with a specific value");
         System.out.println("\t#5 Show Derivative of polynomial #1");
         System.out.println("\t#6 Find root of polynomial #1 with initial guess");
         System.out.println("\t#7 End program");
         System.out.print("Choice : ");
         choice = input.nextInt();
         System.out.println();
      }
      return choice;
   }
} //end class


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Introduction to Network - Course 5

4.1.2.4 Lab - Identifying Network Devices and Cabling

Lab A - Identifying Network Devices and Cabling

Objectives

Part 1: Identify Network Devices

Part 2: Identify Network Media

Background / Scenario

As a member of the networking support staff, you must be able to identify different networking equipment. You must also understand the function of equipment in the appropriate part of the network. In this lab, you will have access to network devices and media. You will identify the type and characteristics of the network equipment and media.

Part 1:     Identify Network Devices

Your instructor will provide various network devices for identification. Each will be tagged with an ID number.

Fill in the table below with the device tag ID number, manufacturer, device model, type (hub, switch, and router), functionality (wireless, router, switch, or combination), and other physical characteristics, such as number of interface types. The first line is filled out as a reference.

ID	Manufacturer	Model	Type	Functionality	Physical Characteristics
1	Cisco	1941	Router	Router	2 GigabitEthernet Ports 2 EHWIC slots 2 CompactFlash slots 1 ISM slot 2 Console ports: USB, RJ-45
2	Cisco	Catalyst 4500 Series	Switch	Switch	48 Port Quantity Ethernet Port Type Supervisor Engine Module Type 10/100/1000 Port Speed
3	Arlo	Pro 2 Security Camera System	Camera	Camera	100% Wire-Free, Rechargeable Battery Operated, Magnetic Mounts HD 1080p Video, 130-Degree Angle Lens Night Vision, 2-Way Audio IP65 Weatherproof Outdoor Ready Motion and Sound Detection Optional 24/7 Continuous Video Recording
4	Cisco	1921	Router	Router	·         2 RJ45 10/100/1000 LAN/WAN Ports ·         2 EHWIC Slots ·         SEC Feature Set ·         1 Doublewide EWIC Slot (takes the place of both standard EHWIC slots when used) ·         1 USB ·         1 USB Console (mini-B) ·         I Serial Port ·         I Auxilary Port
5
6					·

Part 2:     Identify Network Media

Your instructor will provide various network media for identification. You will name the network media, identify the media type (copper, fiber optic, or wireless), and provide a short media description including what device types it connects. Use the table below to record your findings. The first line in the table has been filled out as a reference.

ID	Network Media	Type	Description and to What It Connects
1	UTP	Copper	Connect wired NIC and Ethernet ports on network devices Cat 5 straight-through wired. Connects PCs and routers to switches and wiring panels.
2	UTP Straight Through	Copper	Connect wired NIC and Ethernet ports on network devices Cat 5 straight-through wired. Connects PCs and routers to switches and wiring panels.
3	UTP Crossover	Copper	Connect like devices  on a network. Cat 5 cross over, connects switches to switches
4	Fiber Optic	Copper	Connect different part of building to provide high speed internet connections
5
6

Reflection

After you have identified the network equipment, where would you find more information about the equipment?

______ More information on the network equipment can be found on their websites._________________________________________________________________________________

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