Subject: Network Essentials Braindump from W/E 31/7/98
I used - 15 years PC/Network support, Exam Cram and Transcenders. Both sets of questions from Exam Cram and Trancenders were harder than the actual exam. I never topped 900 on these!!!!!
On to business.
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The first thing I did was write to out these for quick reference Application Gateway mostly
Presentation gateway
Session Gateway
Transport Gateway
Network Router
Data Bridge
Physical Repeater (broadband = amplifier)
Com2 IRQ 3
Com1 IRQ 4
Lpt2 IRQ 5
Floppy IRQ 6
Lpt1 IRQ 7
Free for NIC IRQ 10 - Usually
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Some Questions - not all
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None on wireless
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None about the 28.8 x 8 modems - remember that 28800 is bits per second, which is 28800/1024 (1024 is a K, not a thousand - common misconception) = 28.125kb so to add 8 28800 modems to create greater bandwith 28.125*8 = 225KB. The tip here is to check this for yourself - and do the same for all braindumps. So many time I have read a braindump where the principal provider has advised a certain solution for it to be incorrect. I may even have done the same as I did not attain 1000.
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55 Clients on 10baseT - slow at peak time - most ECONOMICAL way to improve performance is to replace 10BaseT hubs/concentrators with Switched Hubs.
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What to use to discover a card sending meaningless and continuous data?
A Protocol analyzer
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Using RG58 A/U and RG58 A - problems on network?
Replace RG58 A with RG58 A/U.
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New NW CLIENT cannot attach - all others can?
Wrong Frame Type - Several times thsi with slightly different scenarios.
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What is NDIS for?
I'm not telling - you should know this from and for other exams in the MCSE track!!
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Your Using a dial up connection that cannot provide dynamic TCP/IP addressing?
SLIP - PPP can provide.
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What are characteristics of 10BaseT?
What are Characteristics of 10Base2?
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What will replace the POTS (Plain Old Telephone Service)?
BRI ISDN.
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TCP/IP and Netbeui on a network - create three subnets, use what device to continue to use both protocols?
Brouter - bridge for Netbeui (non routable)
Router for TCP/IP (routable)
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Exhibit of topology - what is it?
MESH
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Which Protocols are routable from list?
Appletalk, TCP/IP, NWLINK IPX
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On a peer to peer network you have 5 WIN95 machines. Which Protocol to use? Strangely there was no Netbeui listed!!! Of the four DLC Used for HP jetdirect and IBM mainframe
NWlink IPX Used by NT, Novell
NFS Not a protocol
XNS Old variation of Ethernet - no longer used.
Choose NWlink IPX
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what to use for a 100MB backbone?
Fibre Optic
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Protocol Translation
Gateway
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Faster than 100MB
ATM
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Voice, Video and Data?
ATM
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On an Ethernet Network, installed new Adaptor in PC, Software
Initializes OK. Others OK. Cannot communicate - why?
Transceiver of NIC wrong
IO Port address Wrong
Cable not terminated
The packet Size in incorrect
I choose wrong transceiver.
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What to use to monitor Network Traffic Over time?
Protocol Analyzer.
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Reports that log network activity.
Protocol Analyzer
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You have NT server and Windows 95 on network - monitor the network at the packet level
Protocol Analyzer
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Scenario Questions left for last
I had a system to translate the requirements and options into actuals and cross off as I read through the Proposal. E.G. For Option 1, If they say you want to track incorrect logins - write down "Opt 1 - Auditing" If auditing is enabled the you can put a tick against it.
Well it worked for me!!
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three cities - two links
meets the required but neither Option
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three cities - three links
meets the required and both Option
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Disaster Recovery 1
2 NT servers
Req 1 Disk Stripe with Parity or Mirror OK
Req 2 Backups OK
Opt 1 Audit NO
Opt 2 Virus Protection OK
Meets Required and one Optional
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Disaster Recovery 2
2 NT servers
Req 1 Disk Stripe with Parity or Mirror OK
Req 2 Backups OK
Opt 1 Audit OK
Opt 2 Virus Protection OK
Meets Required and both Optional
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You have 10baseT CAT3 (remember - 10MB), 70% utilisation you want to reduce by 50% (not to 50%). Add 24 more machines at a later date Proposed - Change 10baseT to 100baseT Including - Hubs, Wiring and NIC's.
Opt 1 - Allow for continued Network Growth.
Opt 2 - Maintain Level after Expansion
Opt 3 - Minimalise Cost
I read a Braindump that said that this does not work - I think this person thought the traffic was not being reduced which is quite true but the level of utilisation against what the new topology was capable of had reduced the % utilisation by the power of 10 - so 70% utilisation was theorectically 7% now.
So meets Required
Opt 1 - No problem
Opt 2 - Still within limits - will be under 35% utilisation.
Opt 3 - I don't think so - switched 10MB Hubs would be cheaper.
So Require and 2 optionals
Not all scenarios have 2 options - so be careful.
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Broadcast storm problem on network running TCP/IP, DHCP, WINS, Appletalk, Netbeui, Apple MAC SystemV machines, NT Workstations. Required - Reduce Broadcast storms by 50% and minimise changes to Clients.
Proposal
Turn Off Bridging and use NWlink IPX on all equipment.
Does Not fulfill the required.
Netbios Naming Scheme
Required - The scheme will work when WAN introduced.
Opt 1 - Identify Severs by Location, Department, Number
Opt 2 - Workstations by principal user.
Proposed - Unique 15 Hex for Netbios Name.
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Netbios Naming Scheme 1
Required - The scheme will work when WAN introduced.
Opt 1 - Identify Severs by Location, Department, Number
Opt 2 - Workstations by principal user.
Proposed - Unique 15 Hex for Netbios Name.
Meets Required but no optional.
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Netbios Naming Scheme 2
Required - The scheme will work when WAN introduced.
Opt 1 - Identify Severs by Location, Department, Number
Opt 2 - Workstations by principal user.
Proposed - Server by 58 digit location code, 5 digit department code and 2 digit number to differentiate between multiple departmental servers. Workstations by 15 digit email address of principal user.
Meets required and both optional.
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Required : Reduce Utilisation from 70% by 50%.
Proposed : Change Max Packet size 1514 to 576, replace UTP3 with UTP 5, increase TCP window size 4096 to 16384. If you reduce the size of the max packet size there will be more packets! (roughly a third). increase the window size and the ack packets will reduce by approx 75%. Why change the cable?
Does not meet requirement.
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UNC
Normally this is \\servername\sharename but my exam had \\computername\sharename
Remember that Windows NT runs a server service.
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