70-58/SoberDude

Subject: Passed Network Essentials

i passed network essentials this past sunday with an 844. it's not the

greatest, but it will do. this is my second time taking the exam. i failed it

because i thought that the test would be easier than it was. don't take this

test lightly, it is not the easiest. i would give you the questions that were

on my test, but i cannot remember them all.

I have seen a couple questions on this site as to what DLC is, and it is:

DLC is a protocol that you can use to connect pc's to a mainframe. DLC

can also connect an HP printer to the network. DLC is NOT ROUTABLE.

here are a couple that I remember

1. What Netbios names cannot be duplicated on the network?

a. Domain name

b. Computer name

c. Share name

d. Workgroup name

(choose three)

2. blah blah blah what type of connection type is assured delivery?

a. connection oriented

b. connectionless

(this is one of the many questions where they say to choose all that apply

and there are only 2 options to choose from)

3. you would like to monitor your networks hubs (and all the other physical

stuff), what do you use?

a. protocol analyzer

b. oscilloscope

c. TDR

d. SNMP agent

I also had a few scenario questions. This test I had 6, on my other test that

I took on Monday, I had 10. They were the ones where there were 2 questions

that had almost the same proposed solution. Alot of them were asking about

the WAN links and you need your links to be so fast and you want the

redundancy. If you have 3 sites, and you want redundancy, you have to have 3

links. If you only have 2 and 1 goes down, you cannot communicate. It will not

produce the required result.

I really cannot remember any more questions that I had on the test, but I had

a few on troubleshooting. I really could not tell the difference between the

TDR and protocol analyzer. I know that the protocol analyzer can open the

packets and look inside them, they both can detect breaks. I did get 100 % on

troubleshooting. I went with the protocol analyzer on all except the SNMP

agent. Also, the protocol analyzer has a tdr built in.

I also memorized the OSI Model, Protocol stack, Irq chart, the cabling/speeds

and everthing else you need to know.

Here is the OSI Model in a nutshell

Application Layer

allows apllications to use the network. handles network access. flow control

and error recovery

Presentation Layer

translates the data into a form usable for the apllication layer. redirector

operates here. Manages data compression, translates and encrypts data

Session Layer

allow applications on connecting computers to establish a session, also

provides syncronization between communicating computers.

Transport Layer

Responsible for packet handling, error-free delivery. Repackages data. Divides

data into smaller packets. Handles network handling

Network Layer

Changes system name into address. Responsible for addressing. Determines route

to send. Manages network traffic problems, data congestion. Router and packet

switching. Reassembles data

DataLink Layer

passes data from the network layer to the physical layer. manages phisical

layer communication between communicating systems.

LLC- Link control management, defines SAP's

MAC- communicates with nic card

Physical Layer

basically anything that connects to the computer like the nic card or the

cabling/connectors

IRQ chart

1. keyboard

2. video card

3. com 2 and com 4

4. com 1 and com 3

5. available (somtimes LPT2 or sound card)

6. floppy disk controller

7. parrallel port LPT1

8. real time clock

9. redirected irq 2

10. available

11. available

12. ps/2 mouse

13. math co-processor

14. hard disk controller

15. available

IEEE 802 specifications

802.1- internetworking

802.2- LLC

802.3- CMSA/CD Ethernet

802.4- token bus lan

802.5- token ring lan

802.6- MAN

802.7- Broadband Technical Advisory Group

802.8- Fiber Optic Technical Advisory Group

802.9- Integrated data/ voice network

802.10- network security

802.11- wireless network

802.12- 100BASEVG- AnyLan

Protocol Stack

Application Layer- NCP, SMB

Presentation Layer- NCP

Session Layer- None

Transport Layer- TCP, SPX, netbeui, Nwlink

Network Layer- IP, IPX, Netbeui, DLC, Decnet (i did not think that DLC or

netbeui worked at here, but my books say so)

DataLink Layer- None

Physical Layer- None

For a while I tried to find out the difference between the ISDN Primary and

the ISDN Basic, all the people that I talked to could not give me a straight

answer to it. I finally found out what it is. So, if there are any people that

are out there that were and still are stummped by this here you go.

ISDN- 2 64k B channels and 1 16k D channel for link time management. The ISDN

primary is the whole 128k and the Basic is 64k. Half of the ISDN Primary.

Don't take my word for it. That is why my scores were not the best. I did pass

it though. I used the notes that this came off of to pass it. I also had to

know the cabling and the speeds they ran at.

that is about all that I can remember, here is another address to a page that

I used in venture to passing this exam.

<A HREF="http://www.geocities.com/SiliconValley/Campus/1500/">MCSE/MCP Page

</A>

Good Luck to all in your efforts to becoming an MCSE. The core are done and

off to the electives. Take care and God bless

Nick