CCNA1 R&S Chapter 5

Date Subject Lesson Plan
01/07/19 CCNA1

Midterm Exam is on Friday - Chapters 1-4 (2019)

Discussion: Chapter 5 Tour
Activity: Pass out Chapter 5 Study Guides
Discussion: Ethernet
Discussion: (q. 1-2)
Video: Professor Messer: Ethernet Standards (7:45)
Activity: Join My Social Circle

Assignment: Chapter 5 Study Guide 1-2


Discussion: Chapter 4 Tour
Activity: Pass out Chapter 4 Study Guides
Start Chapter 4: Preventive Maintenance
Discussion: (q. 1)

  • What is troubleshooting?

Discussion: Benefits of Preventive Maintenance (q. 2-4)

  • Preventive mainenance decisions based on:
    • Computer location or environment
    • Computer use
  • Preventive maintenance:
    • Improves data protection
    • Extends the life of the components
    • Improves equipment stability
    • Reduces the number of equipment failures

Video: Professor Messer: Avoid Dust (2:44)

Discussion: Preventive Maintenance Tasks (q. 5-7)

  • Address tasks for Hardware:
    • Remove dust from fans.
    • Remove dust from the power supply.
    • Remove dust from the components inside the computer and peripheral equipment, such as printers.
    • Clean the mouse, keyboard, and display.
    • Check for and secure any loose cables.
  • Address tasks for Software:
    • Review and install the appropriate security updates.
    • Review and install the appropriate software updates.
    • Review and install the appropriate driver updates.
    • Update the virus definition files.
    • Scan for viruses and spyware.
    • Remove unwanted or unused programs.
    • Scan hard drives for errors.
    • Optimize (defragment) hard drives

Discussion: Clean the Case and Internal Components (q. 8-11)

  • Heat sink and fan assembly
  • RAM
  • Adapter cards
  • Motherboard
  • Fans
  • Power supply
  • Internal drives

Discussion: Inspect the Internal Components (q. 12-13)

Discussion: Environmental Concerns (q. 14-15)

  • Allow devices to warm/cool before operating them
    • Don't leave in auto outside
    • Condensation can cause short circuits

Assignment: Chapter 4 Study Guide 1-15
Homework: Study for Chapter 4, Section 1 Quiz

01/08/19 CCNA1

Video: OSI Model: The Data Link Layer (5:25)

Discussion: Ethernet Encapsulation (q. 3-6)

  • LLC Sublayer (review)
  • MAC Sublayer (review)

Video: OSI Model - Data Link Layer (5:13)

Discussion: MAC Sublayer (q. 7-9)
Discussion: Ethernet Evolution (q. 10-11)
Discussion: Ethernet Frame Fields (q. 12-15)
Activity: IM - MAC and LLC Sublayers (q. 16)
Activity: IM - Ethernet Frame Fields (q. 17)

Video: Ethernet Frame Structure (3:15)

Lab: Using Wireshark to Examine Ethernet Frames (Walk through)

Assignment: Chapter 5 Study Guide 3-17

  A+ Quiz: Chapter 4, Section 1

BPA Prep & Mid-Term Chapt 1-4 Prep
01/09/19 CCNA1

Discussion: MAC Address and Hexidecimal (q. 18)

  • MAC address is 48 bits long in hexadecimal
  • Hexadecimal character represents four bits
  • Hexadecimal represented by: Ox, H, or h
  • Hexadecimal used for IPv6 (128 bits)
  • Know how to covert to/from hexadecimal

Video: Decimal to Hexadecimal (5:45)

Activity: Binary-Hexadecimal Practice Worksheet

Discussion: MAC Address: Ethernet Identity (q. 19)

  • OUI - Organizational Unique Identifier
  • First three bytes
  • MAC addresses MUST be unique in every LAN

Discussion: Frame Processing (q. 20)

  • BIA - Burned in Address (ROM chip)
  • Can assign MAC in modern devices
  • Devices will only receive frames with its MAC, Multicast MAC, Broadcast MAC

Discussion: MAC Address Representation (q. 21-22)

  • MAC address can be represented:
    • Using dashes
    • Using colons
    • Using period
  • Use command: ipconfig /all to view MAC address on Windows
  • Use command: ifconfig to view on MAC or Linux

Discussion: Unicast MAC Address (q. 23)

Discussion Broacast MAC Address (q. 25)

  • 48 ones in binary

Discussion: Multicast MAC Address (q. 26-28)

  • IP (class D) tp
  • MAC starts with 01-00-5E (OUI portion of address)

(Run through following lab in Packet Tracer first - then go to lab)
Lab: Viewing Network Device MAC Addresses (Start)

Assignment: Chapter 5 Study Guide 18-28

  A+ None today
01/10/19 CCNA1

Lab: Viewing Network Device MAC Addresses (Finish)

Discussion: Switch Fundamentals (q. 29-30)

  • Switch and bridges are layer 2 devices
    • Uses MAC address table to make forwarding decisions
    • MAC address table is empty when switch first turned on
    • Must learn mac addresses of attached devices
  • MAC address table is sometimes called CAM table or switching table.

Discussion: Learning MAC Addresses (q. 31-33)

  • MAC address table is empty at switch start-up
  • MAC address table is filled in by inspection of SOURCE MAC ADDRESS of frame
  • If address is already there, the timer is refreshed. by default 5 minutes.
  • If destination MAC address is unknown, switch floods frame out of all ports except one received on.
  • If destination is broadcast or multicast, is also sent out all ports except incoming port.

Discussion: Filtering Frames (q. 34)

  • As MAC table becomes populated with MAC addresses, switch can direct frames to specific interfaces by matching destination MAC addresses with table entries.
  • This allows multiple connections at the same time.
  • Conserves bandwidth for other uses/connections.

Video MAC Address Tables (3:09) (q. 35.)

Video Sending a Frame to the Default Gateway (3:01) (q. 36)


  • This is the best learning tool in the entire academy
  • Slight learning curve to use it
  • Make sure you can predict switch operations with ease!!
  • Keep practicing until you have done all the problems - about 20 of them

Assignment: Chapter 5 Study Guide 29-38


None today

01/11/19 CCNA1

Chapt 1-4 Midterm Exam (2019)

Binders Due on the 17th - next Friday (2019)

Assignment: Binary to Hexidecimal Worksheet (10 points)

Lab: Viewing the Switch MAC Address Table

Discussion: Frame Forwarding Methods on Cisco Switches (q. 39-40)

  • Two forms of switching can be used:
    • Store-and-forward switching
    • Cut-through switching
  • Store-and-forward uses CRC (is value of algorithim of bit 1's in the frame)
  • Store-and-forward is required for QOS communication
  • If lots of errors, switches can dynamically set themselves for Store-and-Forward

Discussion Cut-Through Switching (q. 41-42)

  • Cut-through uses one of two methods:
    • Fast-forward switching
      • Sends as soon as destination MAC learned
    • Fragment-free switching
      • Sends as soon as destibation MAC learned, and
      • That the frame is at least 64 bytes long

Discussion Memory Buffering on Switches (q. 43-44)

  • Switches can buffer frames when there is end device congestion
    • Such as NIC speed is slower than switch port speed
  • Two types of switch buffering:
    • Port-based Memory Buffering
    • Shared Memory Buffering

Activity (1 & 2) Frame Forwarding Methods (q. 45)

Discussion: Duplex and Speed Settings (q. 46-48)

  • Two common settings each port:
    • Duplex
    • Speed
  • Usually set to dynamically learn on own
  • Error condition can be a Duplex Mismatch. User experiences slow connection.

Discussion: Auto-MDIX (q. 49)

  • Do not rely on Auto-MDIX
    • Networkers MUST know and use correct cables.

Assignment: Chapter 5 Study Guide 39-49


None today

01/14/19 CCNA1

BPA Prep


Video: CES 2019: Top Tech Tour (11:46)

Section 2: Intro to Troubleshooting
Video: Professor Messer: Troubleshooting Common Hardware Problems (15:19)
Discussion: Intro to Troubleshooting Process (q. 16-23)

  • Many companies require computer owner to sign liability waiver or pay for backup
    • Can be sued for great sums of money

Discussion Step 1: Identify the Problem (q. 24-34)

  • Conversation Etiquette
  • Open/Closed type questions
  • Documenting responses
  • Beep Codes
  • BIOS Information
  • Event Viewer
  • Device Manager
  • Task Manager
  • Diagnostic Tools

Activity: Step 1: Identify the Problem (make sure you can use open/closed ?'s with ease!)

Discussion: Step 2: Establish a Theory of Probable Cause (q. 35-37)

Discussion Step 3: Test the Theory to Determine Cause (q. 38-39)

Discussion Step 4: Establish a Plan to Implement the Solution (q. 40)

Discussion: Step 5: Verify Full System Functionality (q. 41-42)

Discussion Step 6: Document the Findings (q. 43-46)

Discussion Common PC Problems and Solutions (q. 47-52)

Discussion Summary (q. 53)

Assignment: Chapter 4 Study Guide 16-53 (finish)
Homework: Study for Chapter 4 Test

01/15/19 CCNA1

Make up & BPA Prep

Contests: Legal Office Procedures (Shull)
Contest: Visual Basic (Lindsey)


Video: The Best of CES 2019: Only the Cream of the Crop (7:41)
Test: Chapter 4
Test: Semester 1 Mid Term: Chapters 1-3

01/16/19 CCNA1

Binders due tomorrow (2019)

BPA Contest Prep

Record your BPA ID number. Use it everywhere you would normally use your name.
You can use written reference material - no Internet.

Rubric: Judged Contest
Rubric: Non-Judged Written Contests

You can find which contests you're signed-up for on the shared drive. You are responsible for making sure you complete your contests.

When you are not taking a contest exam, you should be preparing for your judged team/individual event!! Please don't waste class time.

Contest: Computer Network Technology (8:00)
Contest: Basic Office Systems 220 (Charles)
Contests: Business Law & Ethics 265 (Lindsy)

  A+ None today
01/17/19 CCNA1

Extra Credit/Community Service Hours: Parent/Teacher Info Night 6:30-8:30 (Pizza at 6:00)

The last day of Grading Period 2

Binders due today (2019)

BPA Prep

Contest: Computer Security
Contest: Visual Basic
Contest: Information Technology Concepts (open event)


None today

01/22/19 CCNA1

BPA Prep

Contest: PC Servicing & Troubleshooting
Contest: Systems Administration using Cisco


None today

01/23/19 CCNA1

BPA Prep

Personal Financial Management (Payton & Charles)

  A+ None today
01/24/19 CCNA1

BPA Prep
Any Contest Make-ups

Last day to prep - forms need to be submitted

  A+ None today
01/25/19 CCNA1 Professional Dress Required
BPA Judged Contests @ CVCC
  A+ BPA Judged Events
01/28/19 CCNA1

Review: Section 2
Quiz: Section 2 Kahoot

Discussion: Destination on Same Network (q. 50-52)

  • Hosts use combo of IP address & subnet mask to determine destination local or remote
  • All frames contain source & destination MAC and IP address.
  • Local destination is on same network

Discussion: Destination Remote Network (q. 53)

  • Remote destination is when the IP/subnet mask combo are on another network
  • Packets are sent to the default gatreway of the router

PT: Identify MAC and IP Addresses (30 min)

Discussion Introduction to ARP (q. 54)

  • ARP - Address Resolution Protocol
  • Destination IP are generally known (by virtue of DNS). Not so for MAC addresses.
  • ARP discovers what destination MAC is associated with destination IP address.
  • ARP maintains table of IP to MAC address mappings.

Discussion ARP Functions (q. 55-57)

  • When destination MAC isn't already known, ARP discovers with an ARP request packet
  • Only host recognizing own IP address responds to ARP request
  • Sends its MAC address back to sending host.
  • If destination is on another network, the default gateway sends its MAC address instead.
  • The ARP table remembers (caches) these learned MAC/IP combo addresses for a time.

Video ARP Request (2:55) (q. 58-59)

  • ARP requests don't have a destination MAC address because MAC address isn't known at this point. Destination MAC address field is empty.
  • ARP requests are broadcast and use destination MAC address of all F's.
  • ARP frames have a TYPE field value of Ox806 (can see it in Wireshark)
  • Routers DO NOT send out broadcasts.

Video ARP Reply (1:57) (q. 60-61)

  • Only the device recognizing own IP address responds to ARP request.
  • Sends back its MAC address using unicast.
  • If no response, frame is dropped.
  • Similar process in IPv6 environment.

Video ARP Role in Remote Communication (3:02) (q. 62-63)

  • In remote communications, the default gateway sends back MAC to sending host.

Discussion Removing Entries from an ARP Table (q. 64)

  • You can clear ARP table entries manually.
  • ARP entries are normally only saved for two minutes and then flushed.

Discussion ARP Tables (q. 65-66)

  • To view ARP table in Windows, use arp -a command.
  • To view ARP table in a router, use show ip arp command.

Assignment: Chapter 5 Study Guide 50-66 (Turn in today)

  A+ None today
01/29/19 CCNA1

Review: PT: Identify MAC and IP Addresses

Review Video: CBTNugg 100-101 #09 Welcome to the World of Switching (33:55)

PT: Examine ARP Table

Discussion ARP Broadcasts (q. 67)

  • ARP broadcasts add to early morning network congestion

Discussion ARP Spoofing (q. 68)

  • ARP creates a security vulnerability called ARP Spoofing/ARP Poisoning
    • Attacker responds to ARP requests with own MAC address to capture frames
    • This is one of the dangers of rogue routers on networks
  • Can also be used in DOS attack

Video: YouTube: How Switches Learn MAC Addresses

Activity: MAC and Choose. (Disregard collecting three old pictures.View them, but don't print them out please)

Discussion Summary

Resource: Fields of a Frame

Video: Cisco Netacad Routing and Switching v6.0 - Chapter 5 (20:10)

Activity: Distribute Chapter 5 Test Study
Assignment: Finish Chapt 5 Study Guide 67-68
Homework Assignment: Study for Chapter 5 Test

  A+ None today
01/31/19 CCNA1

Turn in anything due (study guides) before exam.

CCNA Chapter 5 Review PowerPoint
Test: Chapter 5


None today

02/01/19 CCNA1 BPA Regional Awards Field Trip

BPA Regional Awards Field Trip


Discussion: Summary
CCNA Chapter 5 Review PowerPoint
A+ Chapter 4 Review PowerPoint

IP Addressing and Subnetting for New Users
What is APIPA?