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CCENT FastTrack

CCENT FastTrack. CCENT / ICND#1 kcc 2009 Version. CCENT FastTrack . AGENDA session 1. Network Concepts (1/1). OSI review and example questions (1/2). LAN Fundamentals (1/3). LAB #1 Cabling & Concepts . WAN Fundamentals (1/4)

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CCENT FastTrack

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  1. CCENT FastTrack CCENT / ICND#1 kcc 2009 Version

  2. CCENT FastTrack AGENDA session 1 • Network Concepts (1/1) • OSI review and example questions (1/2) • LAN Fundamentals (1/3) • LAB #1 Cabling & Concepts • WAN Fundamentals (1/4) • IP Addressing & Routing (1/5) KCC June 2009

  3. CCENT FastTrack AGENDA session 2 • IP Addressing (Lab #2) (1/5, 1/6) • LAN Switching (1/7, 1/8) • 29xx Switch ops (Lab #4) (1/8, 1/9, 1/10) • Router Basics (more Lab #3) (1/12, 1/13) • WAN Concepts & Configuration (1/16, 1/17) • WiFi Standards (1/11) KCC June 2009

  4. CCENT FastTrack AGENDA session 3 • Review (Lab #3 & 4) • Routing Protocols (1/14, 1/15) • Routing with RIP (Lab #5) (2/8) • Troubleshooting (1/15) • WAN & LAN LAB (1/16) • Design & Build for the real world KCC June 2009

  5. CCENT FastTrack AGENDA session 4 • Review to date (Lab #5) (2/14, 2/15) • WiFi review (Lab #5) (1/11) • SDM & DHCP (Lab #6) (1/17) • Example Exam Questions • More hands-on troubleshooting • More Example Exam Questions KCC June 2009

  6. CCENT FastTrack Progress AFTER DAY ONE BEFORE TRAINING AFTER DAY TWO KCC June 2009

  7. CCENT FastTrack CABLING CONCEPTS lab#1 IP ADDRESS = 10. A . B. C Where A = user number B = VLAN or function C = device KCC June 2009

  8. CCENT FastTrack REVIEW • Cable Standards • MDI, MDIX, Rollover, DCE/DTE • OSI and TCP/IP Layers and flow • Hubs, repeaters, switches • LAN Types and 802.3 specifications • LAN framing (Ethernet II & 802.3) • MAC addressing, unicast, multicast, broadcast • Ethernet; CSMA/CD • Collision domains & duplex KCC June 2009

  9. CCENT FastTrack Example questions; What cable would be used to connect a PC NIC to a switch A rollover cable B cross over cable C straight cable D V.35 cable What cable would be used to connect to a router console port A cross over cable B V.35 C coax D straight cable E rollover cable Which is an example of TCP/IP network access protocols A HTTP B FTP C TFTP D IP E Ethernet Which pins are connected on an ethernet crossover cable A 1 to 2, 3 to 4, 4 to 3, 2 to 1 B 1 to 3, 2 to 5, 4 to 5, 6 to 8 C 1 to 3, 2 to 6, 6 to 7 D 1 to 3, 2 to 6, 6 to 2, 3 to 1 E 4 to 6, 5 to 7, 6 to 4, 7 to 5 Which device could be installed to increase the collision domains in the network A hub B router C switch D piano Which of the following are true regarding Ethernet framing A FCS is used for error recovery B Data can be upto 1500 Bytes in length C half of the MAC address is used for OUI D FCS is 4 Bytes long E Ethernet II has a field for ‘LENGTH’ F Ethernet 802.3 has a field for ‘LENGTH’ KCC June 2009

  10. CCENT FastTrack OSI REVIEW KCC June 2009

  11. CCENT FastTrack OSI REVIEW 7 6 5 4 KCC June 2009

  12. CCENT FastTrack OSI REVIEW KCC June 2009

  13. CCENT FastTrack Example OSI questions Which 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) D Layer 4 (transport) E Layer 1 (physical) NetBIOS operates at OSI layer A Layer 1 (physical) B Layer 2 (data) C Layer 3 (network) D Layer 4 (transport) 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) D Layer 4 (transport) 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

  14. CCENT FastTrack WAN – Static Routing lab #2 KCC June 2009

  15. CCENT FastTrack Network Protocols Reminder TCP SEGMENT CONSTRUCTION 0 4 8 16 19 24 31 source port destination port FLAGS; U Urgent A Acknowledgement P Push R Reset S Synchronize SYN F FIN sequence number acknowledgement number offset reserved U A P R S F window checksum urgent pointer TCP = IP protocol # 6 options (variable length) padding LAYER 4 d a t a UDP SEGMENT CONSTRUCTION 0 4 8 16 19 24 31 source port destination port UDP = IP protocol # 17 length UDP checksum LAYER 4 d a t a KCC June 2009

  16. CCENT FastTrack Network Protocols Reminder 0 4 8 16 19 24 32 version hdr length TOS total packet length identification flags fragment offset IP PACKET TTL protocol # header checksums source address destination address options (variable length) padding d a t a FRAME FRAME HEADER DATA TYPE #0800 = IP content TYPE FIELD if Ethernet DIX (Ethernet II) header format LENGTH FIELD if IEEE Ethernet 802.3 KCC June 2009

  17. CCENT FastTrack Network Protocols Reminder FTP HEADER FTP DATA SEGMENT TCP HEADER TCP DATA PORT # 21 = FTP content PACKET IP HEADER IP DATA PROTOCOL #6 = TCP content FRAME FRAME HEADER DATA TYPE #0800 = IP content Preamble DATA SIGNAL KCC June 2009

  18. CCENT FastTrack Network Protocols Reminder ETHERNET FRAME CONSTRUCTION LAYER 2 64 to 1518 Bytes long preamble/SD destination mac address source mac address TYPE/LENGTH 802.2 SSAP/DSAP DATA FCS 41 to 1500 Bytes long 4 8 6 6 2 4 (+5) L E N G T H I N B Y T E S NOTE… Ethernet II/DIX frame preamble is 8 bytes long with no SD byte, Ethernet II/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 be1518 bytes and the minimum frame size should be 64 bytes in order to stay within the Ethernet specification and be able to detect a collision. The frame size was extended to 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 been pushed even further with the latest technologies. ISL (Inter Switch Link) VLAN tagging extends the frame by an additional 30 Bytes, MPLS (Multi Protocol Label Switching) adds 4 Bytes for each label….. etc. etc. so it is not unusual to see giant frames on today’s networks. KCC June 2009

  19. CCENT FastTrack LAYER 1 UTP & AUI Ethernet Cabling pin assignment; pin # MDI-X function MDI function RJ-45 SOCKET VIEW 1 Rx + Tx + 2 Rx - Tx - 3 Tx + Rx + 6 Tx - Rx - 1 2 3 4 5 6 7 8 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. NOTE: Chiron makes use of RJ-11 connectors for the Cat-3 cabling for example an RJ-11 to RJ-45 cable ; RJ-11 pin # RJ-45 pin # 1 5 2 6 3 1 4 2 5 3 6 4 NOTES; Some equipment uses the 15 pin D AUI connection ; pin # function 1 ground 2 CI-A 3 DO-A 4 ground 5 DI-A 6 VDC ground 9 CI-B 10 DO-B 11 ground 12 DI-B 13 VDC +12 14 ground 15 ground KCC Feb 1998

  20. CCENT FastTrack T568B T568A 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  KCC Feb 1998

  21. CCENT FastTrack Network Routing Protocols Review KCC June 2009

  22. CCENT FastTrack Switching lab #4 KCC June 2009

  23. CCENT FastTrack VLSM 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

  24. CCNA FastTrack Example VLSM & routing questions Auto 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

  25. CCENT FastTrack ROUTING KCC June 2009

  26. CCNA FastTrack Switching and Bridging Review • VLANs • Broadcast domains/Collision domains • Spanning Tree (basic knowledge) • VTP modes (server, client, transparent) • Trunking (ISL, 802.1q) • 29xx switch IOS • Configuration and defaults • Switching methods • Store and forward • Cut through • Fragment free KCC June 2009

  27. CCNA FastTrack Example 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 What is the default mode for VTP on a 2950 switch A client B transparent C server D passive E none 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 Broadcasts are automatically forwarded between VLANs A true B false C depends In a network of 9 switches for 2 VLANs, how many route bridges A 9 B 18 C 2 D 8 E 7 KCC June 2009

  28. CCENT FastTrack Routing and Access Lists Ref: Lab #2, 3 & 4 • OSPF • EIGRP • RIP • Access Lists & NAT KCC June 2009

  29. CCNA FastTrack Access 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

  30. CCNA FastTrack Example 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-list Which 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

  31. CCENT FastTrack SDM & DHCP KCC June 2009

  32. CCENT FastTrack Wan Review • Serial defaults • Bandwidth • Encapsulation • DTE/DCE clocking • Frame Relay • LMI type/DLCI • Encapsulation • RFC 1490 • HDLC • Frame Relay • WiFi KCC June 2009

  33. CCNA FastTrack Example WAN questions 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 2.04Mbps In 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

  34. CCENT FastTrack Final Review KCC June 2009

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