Defending against lameness since 2008

Instead of waiting until after Networkers to start studying for the 350-018 I decided to get a few sections under my belt before the flight on Saturday. Luckily for the me the first section is just the general networking stuff. The Written Exam Blueprint v2.0 lists the following topics for this section:

1. Networking Basics - Not to worried about this one.
2. OSI Layers - Again, I think I’ll be ok.
3. TCP/IP Protocols - Whew.
4. Switching (VTP, VLANs, Spanning Tree, Trunking) - A little brushing up won’t hurt.
5. Routing Protocols (RIP, OSPF, EIGRP, and BGP) - Maybe a refresher on BGP.
6. IP Multicast -  I’ll spend a couple minutes on this one.

Now, after reading through a couple of different sources I found a few things that I felt might need a little refresher in my mind so here are a few questions and their correct answers (I hope).

1. What mechanism is used in Ethernet to guarantee packet delivery? CSMA/CD (Carrier Sense Multiple Access/Collison Detection)
2. How is fast EtherChannel best defined? It is the ability to bundle 100-Mbps ports into a logical link.
3. What are the possible states of spanning tree? Disabled, Listening, Learning, Forwarding, Blocking
4. What are the Distance Vector routing protocols? RIPv1 and IGRP
5. VLSM (Variable Length Subnet Masks) are supported by what routing protocols? RIPv2, OSPF, IS-IS, EIGRP and BGP4
6. What is the source TCP port when a Telnet session is created from a PC to a Cisco router? A value > 1024
7. If two Cisco routers are configured with HSRP, one with a default priority of 100 and the other 99, which router will become the active router? The router with the higher priority
8. RIP uses what UDP port number? UDP 520
9. What are the administrative distances for OSPF, RIP and EIGRP? OSPF=110, RIP=120, EIGRP(internal)=90, EIGRP(external)=170
10. What layer 4 protocol and port number does BGP use to ensure routing updates? TCP 179
11. What what field does the IP checksum calculate the checksum value?  Header field
12. The TCP header checksum ensures integrity of what data in the TCP segment? Data and the Header
13. What are the steps of PPP Callback (RFC 1570)? Client connects to the Cisco access server, Cisco access server dials the client, Callback is negotiated in the PPP Link Control Protocol (LCP) phase, PPP Authentication is performed, Cisco IOS validates callback rules for this user and disconnects the caller for callback
14. What UDP port range is used between Cisco IP Phones when a call is in progress?  16384 - 32767
15. What are some common Multicast Addresses and what are they for? 224.0.0.1 - All hosts on subnets, 224.0.0.2 - All multicast routers, 224.0.0.5 - All OSPF-enabled routers, 224.0.0.6 - All OSPF DR routers, 224.0.0.9 - All RIPv2-enabled routers, 224.0.0.10 - All EIGRP-enabled routers

Hopefully either tonight or tomorrow I will be able to get to the second section.

Tags: 350-018, ccie, multicast, ppp callback, security

You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.