I've decided to post up the The Weekly Question from csg-e@yahoogroups.com

So that they can be referenced.  This is the Answers provided.

1 Appletalk

- Uses AARP to aquire a node address

- Uses RMTP, AURP & EIGRP as routing protocols

- Phase I supports 127 hosts, Phase II 253 hosts

2 Vlans

- membership can be static or dynamic for the different departments in case of a vlan for each department

- You can use VLANs with IP & IPX

- If you have multiple Vlan's you must create a VTP domain

3 correct order

e. Define the problem

i. Gather information

k. Consider possibilities

c. Create an action plan

h. Implement an action plan

g. Observe results

Problem solved

a. Document changes

Problem not solved

m. Iterate the process from step 4

> OK, Its that time of the week again...

>

> 1. Give us three things about AppleTalk...

a. Networks are identified by a cable range.

b. Computers will dynamically select their own node address.

c. Routers will automatically elect a seed router (unless one has been defined).

> 2. Give us three reasons why you would create VLAN's...

a. Better utilization of equipment (ie, if you had 2 groups of 12 people you could put them on a single 24 port switch instead of 2 seperate pieces of equipment).

b. Create multiple segments spanning multiple switches.

c. Because it's just so fun! (sorry, couldn't think of a 3rd thing between doing tech support calls so I decided to have a little bit of fun by using you in the specific sense instead of the general sense).

1 Frame Relay

- For PVC based configurations every protocol (IP, IPX) need to be mapped to a local DLCI

- It's Non Broadcast Multi Access

- DLCIs can be mapped static or dynamic (Inverse ARP)

2&3 answers were provided

Koen

ANSWERS to multiple choice questions:

2. Which of the following network utilisation percentage figures would indicate that an Ethernet segment is saturated?

Choose all that apply...

a,c,d,e

a. 100%

b. 32%

c. 75%

d. 43%

e. 92%

3. Match the following Scalability Constraints for Flat - Switched and Bridged - Networks with the correct letter:

a = 100 workstations

b = 200 workstations

c = 300 workstations

d = 400 workstations

e = 500 workstations

Protocol Max Number of Workstations

IPX c

IP e

NetBIOS b

AppleTalk b

Mixed b

1 Give us 2 things about multicast

- Defined in RFC 1112

- Routers listen for IGMP messages and periodically send out queries to discover which groups are active/inactive on particular LANs

2 NAT, give 2 Traffic Types supported by Cisco IOS - if its routable it should be translatable

- ftp

- snmp

3 EIGRP, 3 things to know about it

- Evolved from IGRP

- Supports VLSM

- Uses less bandwidth than IGRP

Svenn

1 BGP

- Uses attributes (AS Path, Origin, Next Hop, Weight, Local preference,...)

- Uses TCP port 179

- Incremental routing updates once routing tables are synchronized

2a Broadcasts:

- Used by ARP to discorver MAC address

- broadcast address is 255.255.255.255

2b Frame Size

- Ethernet Frames cannot exceed 1518 bytes

- Token Ring 18000 bytes

2c Windowing and Flow Controll

- Flowcontroll can be done with hardware

2d Error recovery

- X.25 has lots of error recovery build in

3 Scalable Internetwork

- Campus networks, uses multilayered

Koen

<Stares stunned for a moment, then pulls "Internet Routing Architectures", by Halabi, off the bookshelf (I know, I'm cheating, and according to a.c.c, this is the definitive BGP book ;-) >

1. BGP :

a. Subdivided into two groups. In a connection between routers in the same AS (Autonomous System) , BGP is referred to as Interior BGP (IBGP). If the routers are in different AS's, it's Exterior BGP (EBGP).

b. BGP authentication uses the Message-Digest Algorithm v5 (MD5).

c. We're currently on version 4.

Unfortunately Katherine's up and about, so I've got to go now. I'll answer

the others later, if I get a chance.

Garry

Hi Ken,

good start, got me on frame size for tonight...

1. Tell me three things about BGP.

a. Is an Exterior routing protocol

b. BGP exchanges reachability information with other BGP systems

c. Supports CIDR - Classless Interdomain Routing (BGP4)

2. Tell me two thing about each of the above areas as they relate to network traffic characterization.

Broadcast behaviour: 

1. Broadcasts and multicasts are controlled by using Routers

2. The maximum number of workstations per segment should be adhered to otherwise WINS/ARP/DNS traffic will congest it.

Frame size: 1.

2.

Windowing and Flow Control: 

1. TCP window sizes are variable during the connection period 

2. TCP windowing is symmetrical, both the ends of the connection can send and receive.

Error Recovery: 

1. Sequencing/numbering/labelling of data and acknowledgements enable error recovery 

2. Connection-oriented protocols include LLC type 2 (802.2) TCP/IP.

3. Tell me one thing about a scalable internetwork.

a. Hierarchical networks are easier to scale than other network

models, as they are modular.

Svenn