CCNA 640-802 kcc 2009 Version Network Concepts review (1/1) OSI review and example questions (1/2)...

CCNA 640-802 kcc 2009 Version

• Network Concepts review (1/1)

• OSI review and example questions (1/2)

• LAN Fundamentals review (1/3 + 2/1)

• LAB #1 Connecting and access (1/9 + 1/12 + 1/13)

CCNA FastTrack CCNA FastTrack

• WAN Fundamentals (1/4 + 2/13)

• IP Addressing (lab #2) (1/5, 1/6, 2/4, 2/5)

AGENDA AGENDA session 1session 1

KCC June 2009

• IP Addressing review (Lab #3) (1/10, 1/14)

• LAN Switching (1/7, 1/8, 2/1, 2/2)

• 29xx Switch ops (Lab #4) (1/8, 1/10, 2/3)

• Routing Basics (review Lab #3) (1/14, 2/7)


• WAN Concepts (1/16, 1/17, 2/12, 2/13, 2/14)

• day review

KCC June 2009


• Review (Lab #3 & 4)

• Routing Protocols (1/15, 2/8)

• Routing RIP review (Lab #5) (2/8)

• Routing OSPF & EIGRP (Lab #5) (2/9, 2/10, 2/11)


• Access Lists & NAT/PAT (2/6, 2/16)

• Design & Build for the real world (2/7, 2/11, 2/14)


KCC June 2009

• Review to date (Lab #5) (2/14, 2/15)

• WiFi review (Lab #5) (1/11)

• IPv6 & SDM (Lab #6) (1/16, 2/15, 2/16)

• Example Exam Questions


• More hands-on troubleshooting (2/3, 2/7, 2/14)

• More Example Exam Questions


KCC June 2009

ProgressProgress


IOS Fundamentals

OSI Layers & TCP/IP

Bridges, Switches & STP

Switching, VLANs & VTP

Routing Protocols

Access Lists, NAT & VPN

WAN and WiFi designs

Site specific items

BEFORETRAINING

AFTERDAY ONE

AFTERDAY TWO

KCC June 2009

CCNA FastTrackCCNA FastTrack

IOS REVIEW lab#1IOS REVIEW lab#1CHECKLIST (Ciscopress ref#)

console access (1- 8 206) erase config (1-8 220) configure using setup mode (1-8 221) configure from CLI (1-8) configure address on interface (1-13 411) loopback interfaces (2) telnet access (1) passwords (1) hostname & banners (1 - 13)) logging & time setup (1 - 13) memory use, flash, NVRAM, RAM, (1) copy to TFTP etc. IOS and config, (1 & 2) password recovery (1) CDP (1-10 277) interface status & show commands (1 & 2)

2xxx

55xx coreA29xx

R1

S1

console

Ethernet

Ethernet

PC1

10.1.11.6/24

10.1.11.1/24

10.1.11.10/24

Management Router

10.1.11.66/24

Fa 0/48Fa 0/1

IP ADDRESS = 10. A . B. C

Where

A = user number

B = VLAN or function

C = device KCC June 2009

IOS REVIEWIOS REVIEW CCNA FastTrackCCNA FastTrack

•CLI Password configuration•For VTY, Console and Aux ports

•Key sequence for edit and buffer recall etc

•CDP defaults and configuration

•Banner commands use and editing

•Router memory types and use•Flash IOS and config file control etc

•Passwords recovery

•Logging messages•Know defaults and how to change

KCC June 2009

Example IOS questionsExample IOS questions;;What is used to set the router’s boot procedure

A command register

B flash register

C config register

D boot status register

What is the command to enable CDP on an interface

A enable cdp

B cdp enable

C cdp run

D run cdp

E cdp

What information can be obtained from CDP

A neighbor memory size

B neighbor address

C neighbor platform

D neighbor IOS version

E neighbor routing protocols

What is the command to remove the starting configuration

A clear start-up

B write erase

C erase memory

D erase startup-config

E clear memory

Which command would be used to copy IOS to flash

A copy flash tftp

B copy tftp flash

C copy mem flash

D write memory

Where are router syslog messages sent by default

A null

B aux port and console port

C console port

D syslog server


KCC June 2009

OSI REVIEWOSI REVIEWAPPLICATION

PRESENTATION

SESSION

TRANSPORT

NETWORK

DATA

PHYSICAL


KCC June 2009

OSI REVIEWOSI REVIEW


7

6

5

4

KCC June 2009

OSI REVIEWOSI REVIEW CCNA FastTrackCCNA FastTrack

KCC June 2009

Example OSI questionsExample OSI questionsWhich layer of the OSI model covers Frame Relay

A Layer 5 (session)

B Layer 2 (data)

C Layer 3 (network)

D Layer 4 (transport)

What OSI layer covers acknowledgement and sequencing

A Layer 5 (session)

B Layer 3 (network)

C Layer 2 (data)


E Layer 1 (physical)NetBIOS operates at OSI layer

A Layer 1 (physical)

B Layer 2 (data)

C Layer 3 (network)


E Layer 5 (session)

Which protocols are routable

A NetBIOS

B IP

C SNA

D Appletalk

E IPX

Which OSI layer does CDP operate

A Layer 1 (physical)

B Layer 2 (data)

C Layer 3 (network)


Which OSI layer does a bridge operate

A Layer 6 (presentation)

B Layer 5 (session)

C Layer 4 (transport)

D Layer 3 (network)

E Layer 2 (data)


KCC June 2009

WAN – HDLC, WAN – HDLC, PPP & Static Routing lab #2PPP & Static Routing lab #2


CHECKLIST (Ciscopress ref#)

interface status & show controllers (2 -13 411) clock rate settings (2-13 415) HDLC encapsulation (1-17 542) interface addrssing (1 & 2) ping, traceroute & MS tracert (2-7 276) PPP configuration (1-17 545) PPP multi-link (2-12 436) test traffic over the links (1 & 2) static routing to reach PCs (1-14) login to remote router (1 & 2) PPP security (2-12 443) local and remote authentication (1-9 239) authorization (+) CDP (2-3 119 +)

2xxx

55xx coreA29xx

R1

S1

console

PC1

2xxxR2

55xx coreA29xx

S2PC2

console

Se

SeSe

Se

10.1.11.10/24

10.1.11.1/24

10.2.21.1/24

10.12.0.2/30

10.12.0.1/3010.12.0.5/30

10.12.0.6/30

10.2.21.6/24

10.1.11.6/24

KCC June 2009

TCP SEGMENT CONSTRUCTION

destination port

0 4 8 16 19 24 31

checksum

options (variable length) padding

d a t a

urgent pointer

windowoffset reserved U A P R S F

source port

sequence number

acknowledgement number

FLAGS;U UrgentA AcknowledgementP PushR ResetS Synchronize SYNF FIN

TCP = IP protocol # 6

UDP SEGMENT CONSTRUCTION

destination port

0 4 8 16 19 24 31

source port

d a t a

UDP checksumlengthUDP = IP protocol # 17

LAYER 4

LAYER 4

CCNA FastTrackCCNA FastTrack Network Protocols ReminderNetwork Protocols Reminder

KCC June 2009

Network Protocols ReminderNetwork Protocols Reminder


DATAFRAME HEADERFRAMETYPE #0800 = IP content

identification

total packet length

0 4 8 16 19 24 32

version hdr length TOS

flags fragment offset

destination address

options (variable length) padding

d a t a

TTL protocol # header checksums

source address

IP PACKET

TYPE FIELD if Ethernet DIX (Ethernet II) header formatLENGTH FIELD if IEEE Ethernet 802.3

KCC June 2009

Network Protocols ReminderNetwork Protocols Reminder

FTP DATAFTP HEADER

TCP DATATCP HEADER

IP DATAIP HEADER

DATAFRAME HEADER

DATA SIGNALPreamble

FRAME

PACKET

SEGMENTPORT # 21 = FTP content

PROTOCOL #6 = TCP content

TYPE #0800 = IP content


KCC June 2009

ETHERNET FRAME CONSTRUCTION

DATATYPE/LENGTH FCSsource mac addressdestination mac addresspreamble/SD

64 to 1518 Bytes long

41 to 1500Bytes long

6 6 28

802.2 SSAP/DSAP

4 (+5) 4

L E N G T H I N B Y T E S

NOTE… Ethernet DIX frame preamble is 8 bytes long with no SD byte, Ethernet DIX frame has TYPE field and no LENGTH or 802.2 fields.

Ethernet IEEE 802.3 frames have 7 byte preamble, 1 byte SD, Ethernet IEEE 802.3 frames have LENGTH field and no TYPE field, Ethernet IEEE 802.3 frames have 802.2 field for 2 byte DSAP, 2 byte SSAP, 2 control bytes and 5 byte SNAP (if used DSAP and SSAP = 0xAA).

Therefore the largest Ethernet frame size should be 1518 bytes and the minimum frame size should be 64 bytesin order to stay within the Ethernet specification and be able to detect a collision. The frame size was extendedto 1522 bytes by a IEEE 802.3 committee workgroup (802.3ac) to support VLAN tagging using 802.1Q but several manufactures equipment still will not support giant frames (larger than 1518). Frame sizes have beenpushed even further with the latest technologies. ISL (Inter Switch Link) VLAN tagging extends the frameby an additional 30 Bytes, MPLS (Multi Protocol Label Switching) adds 4 Bytes for each label….. etc. etc. soit is not unusual to see giant frames on today’s networks.

LAYER 2

CCNA FastTrackCCNA FastTrack Network Protocols Network Protocols ReminderReminder

KCC June 2009

UTP & AUI Ethernet Cabling

RJ-45

SOCKET

VIEW

1 2 3 4 5 6 7 8

pin assignment;

pin # MDI-X function MDI function

1 Rx + Tx +2 Rx - Tx -3 Tx + Rx +6 Tx - Rx -

NOTE; PC’s, ip phones, WiFi APs, network printers & routers all have MDI ports (Media Dependant Interface), bridges, switches, hubs & aDSL switch ports have MDI-X (cross-over). Newer equipment has auto-polarity MDI/X and some supply switchable MDI/MDI-X ports to enable connection of to devices without the use of a crossover cable.

Some equipment uses the 15 pin D AUI connection ;

pin # function

1 ground2 CI-A3 DO-A4 ground5 DI-A6 VDC ground9 CI-B10 DO-B11 ground12 DI-B13 VDC +1214 ground15 ground KCC Feb 1998

NOTES;

NOTE: Chiron makes use of RJ-11 connectors for the Cat-3 cablingfor example an RJ-11 to RJ-45 cable ;

RJ-11 pin # RJ-45 pin #

1 52 63 14 25 36 4

LAYER 1



KCC Feb 1998

T568B

T568A configuration at one end of the cable and T568B at the other = a cross over cable. T568A/B have slightly different colour codes/pair assignments, but it does not matter which specifications are used as long as the same specifications are used throughout

T568A

Network Routing Protocols ReviewNetwork Routing Protocols Review


Protocol STATIC RIP v1 RIP v2 IGRP EIGRP OSPF

Admin distance

VLSM

update

metric

method

Auto summary

Loop prevention

KCC June 2009

STP & Switching lab #4STP & Switching lab #4

55xx coreA29xx

S1PC1

55xx coreA29xx

S2

PC2

55xx coreA29xx

S3

55xx coreA29xx

S4

55xx coreA29xx

SRV1 SRV2 SRV3 SRV4


CHECKLIST

STP (2-2) Multicast & Broadcasts VLAN configuration (2-1) PVSTP (2-2 87) RSTP (2-2 78) MISTP (2-2 87) VTP (2-1 16) EtherChannel (2-2 76) PAGP & DTP (+) root bridge tuning (2-2) 802.1Q & ISL (2-1) router on a stick (2-1) switch security (2-3) mac tables (2-3) switch management (+) SNMP & routing (+) VoIP VLANs (+) VoIP basic QoS (+)

KCC June 2009

VLSM and Basic Routing REVIEWVLSM and Basic Routing REVIEW


•VLSM and network masks etc Routing configuration commands

•Classless routing (EIGRP, OSPF, RIP v2)

•Classful routing (RIP v1, IGRP)

•Distance vector vs Link state routing

•Administration distances•Routing, static, connected, default route

•Routing tables, databases and ARP

•Access-lists & NAT

KCC June 2009

Example VLSM & routing questionsExample VLSM & routing questionsAuto summary can be disabled on

A EIGRP

B RIP v1

C IGRP

D RIP v2

What network would provide for 1022 nodes

A 164.22.10.0/24

B 164.22.10.0/28

C 172.16.16.0/22

D 172.16.17.0/22

E 192.168.5.0/16

In a routing table, routes from EIGRP are marked

A E

B O

C E1

D E2

E D

Which command is used to enable RIP routing

A router rip 66

B enable rip

C rip enable

D router rip

E set rip enable

The default admin distance for IGRP routes is

A 90

B 110

C 100

D 120

E 170

Which of the following is NOT on the same subnet

A 164.14.225.7/19

B 164.14.223.4/19

C 164.14.223.0/19

D 164.14.199.16/19

E 164.14.223.8/19


KCC June 2009

ROUTINGROUTING


CHECKLIST (Ciscopress ref#)

HDLC & PPP review Frame Relay (2-13) FR routing (2-13) RIP (2-8) EIGRP (2-10) OSPF (2-9) troubleshooting (1 & 2) access lists (2-6) FTP WEB DHCP DNS TFTP traceroute & ping exec (2-7) routing admin distance (2-8) VoIP integration (+) review broadcast domains

FRAMERELAY

2xxx

55xx coreA29xx

R1

S1PC1

2xxx

S2

PC2

2xxx

R3

S3

2xxx

R4

S4

2xxx

55xx coreA29xx

R2

55xx coreA29xx

2xxx

2xxx

55xx coreA29xx

SRV1 SRV2 SRV3 SRV4

55xx coreA29xx

PC3

PC4

10.1.11.10/24

10.2.21.10/24 10.4.41.10/24

10.3.31.10/24

192.168.0.0/24

loop 111

loop 112

loop 113

loop 111

loop 112

loop 113

loop 111

loop 112

loop 113

loop 111

loop 112

loop 113

INTERNETV-LAB

KCC June 2009

Switching and Bridging ReviewSwitching and Bridging Review


•VLANs•Broadcast domains/Collision domains

•Spanning Tree (STP, RSTP, PVST, MIST)

•VTP modes (server, client, transparent)

•Trunking (ISL, 802.1q, VTP & DTP)

•29xx switch IOS•Configuration and defaults

•Switching methods•Store and forward•Cut through•Fragment free

KCC June 2009

Example switching and bridging questionsExample switching and bridging questions


When two VTP servers in the same domain have different VLAN configurations…..

A all conflicting VLANS are disabled

B VTP server with highest configuration

register overwrites the other switch

C VTP server with lowest configuration

register over writes the other switch

D the domain is partitioned into two

What is the correct order for 802.1D spanning tree start

A Forwarding, Listening, Learning, Blocking

B Blocking, Listening, Learning, Forwarding

C Listening, Blocking, Forwarding, Learning

D Learning, Listening, Blocking, Forwarding

Which of the following are true about a frame received with an unknown mac address into a 2950 switch

A frame is forwarded out of all ports

B frame is dropped

C frame is forwarded toward the root bridge only

D frame is forwarded out of all ports except port

where the frame was received

What is the default mode for VTP on a 2950 switch

A client

B transparent

C server

D passive

E none

In a network of 9 switches for 2 VLANs, how many route bridges

A 9

B 18

C 2

D 8

E 7

Broadcasts are automatically forwarded between VLANs

A true

B false

C depends

KCC June 2009

Routing and Access ListsRouting and Access Lists


Ref: Lab #2, 3 & 4

•OSPF

•EIGRP

•RIP

•Access Lists & NAT

KCC June 2009

Access Lists ReviewAccess Lists Review


•Access Lists & number range•1 - 99 _________________ •100 - 199 _________________•Named _________________•Reflexive _________________•Dynamic _________________

•ACL application commands IOS >12.2

•TCP, UDP & IPX port/socket numbers

KCC June 2009

Example ACL & NAT questionsExample ACL & NAT questions


What is the NAT term for the private ip address on a PC connected to a router for Internet access

A inside local

B inside global

C outside local

D outside global

What command is used to apply an access list to an interface

A access-list apply

B access-class

C access-group

D access

E interface-access-listWhich line would block Telnet access

A access-list 101 deny ip any any eq 23

B access-list 101 deny tcp any any eq 23

C access-list 99 deny tcp any any eq 20

D access-list 99 deny tcp any any eq 21

E access-list 105 deny udp any any eq 23

Valid access list for ip extended is…

A 1 - 99

B 100 - 199

C 101 - 199

D 0 - 99

E 200 - 299

ACLs are processed in the order that they were configured

A true

B false

C depends

Which of the following are NOT valid

A access-list 801 permit –1 –1

B access-list 101 deny ip any any eq 162

C access-list 801 deny bad.0.0.1 –1

D access-list 801 deny –1 bad.0.0.1 452 –1 0

E access-list 199 perm tcp any any eq www

KCC June 2009

VPN, NAT, SDM, IPv6VPN, NAT, SDM, IPv6 CCNA FastTrackCCNA FastTrack

INTERNET

FRAMERELAY

2xxx

55xx coreA29xx

R10

S10

2xxx

2xxx

55xx coreA29xx

R11

2xxx

2xxx

S11

R12

CHECKLIST

SDM demonstration (2-15) routing for SDM (2-15) VPN review (2-15) VPN configuration SDM (+) VPN configuration CLI (+) troubleshooting (+) access lists (2-6) NAT & PAT (2-16) xDSL configuration (1-16 519) IPv6 (2-17) WiFi configuration (1-11) EXAMPLE EXAMS (+)

2xxx

R13

192.168.0.98/24

10.10.102.0/28

Given access via 192.168.0.98, explore thenetwork and complete the addressing details on

the drawing.Add configuration and addressing to allow

access to all routers.

KCC June 2009

Wan ReviewWan Review CCNA FastTrackCCNA FastTrack

•Serial defaults•Bandwidth•Encapsulation•DTE/DCE clocking

•Frame Relay•LMI type/DLCI•Encapsulation•RFC 1490

•HDLC

•PPP

•WiFi

KCC June 2009

Example WAN questionsExample WAN questions CCNA FastTrackCCNA FastTrack

Which authentication mode supports MD5

A PPP

B PAP

C CHAP

D super PAP

What is the default bandwidth setting on a Cisco serial interface

A 2Mbps

B 4Mbps

C 1.54Mbps

D no default set

E 2.04MbpsIn PPP, what is used to identify a loopback

A PAP

B CHAP

C Link Quality Monitoring

D NCP

E Magic Numbers

Which protocol manages the connection between router and FR

A DLCI

B FR-manage

C LMI

D ILMI

E OAM

Which is/are NOT Frame Relay terms

A BECN

B FECN

C ILMI

D DE

E DLCI

F X.121

What is the default encapsulation on a Cisco serial interface

A HDLC

B PPP

C SLIP

D Frame Relay

E X.25

KCC June 2009

•xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx – Where x is a 16 bits hexadecimal field 2001:0000:1234:0000:0000:C1C0:ABCD:0876

•Leading zeros in a field are optional: 2001:0:1234:0:0:C1C0:ABCD:876

•Abbreviate by removing zeros: FE80:0000:0000:0000:0000:0010:0000:0123 becomes FE80::10:0:123

•2000 – 3FFF Aggregatable unicats global addresses•FE80 Link Local Unicast•FEC0 Site Local Unicast (private much like RFC1918)•FF00 Multicast


IPv6 NotesIPv6 Notes

KCC June 2009


IPv6 NotesIPv6 Notes

KCC June 2009

Final ReviewFinal Review CCNA FastTrackCCNA FastTrack

KCC June 2009

CCNA 640-802 kcc 2009 Version Network Concepts review (1/1) OSI review and example questions (1/2)...

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Transcript of CCNA 640-802 kcc 2009 Version Network Concepts review (1/1) OSI review and example questions (1/2)...