Networking Essentials (test 70-58)
So I got on the net and there was a new lot of Brain dumps…Below I have included the extra study I got from these Brain dumps…I resat the test this morning and got a Whopping 983…That is 1 wrong…Wow was I surprised and amazed…Anyway thanks to all the other people that have posted here…You really help…Know onto Server and Enterpriase.
The following is a collection of the best stuff I found lately
You have a network of 75 Windows 95 and WFW 3.11 machines. Choose an appropriate security model.
a. Centralized security w/user level.
b. Peer to peer w/share level
etc, etc.
Hmmm, they don't mention an NT or Novell server. Must be "B", right? Wrong!! Just because they don't mention a server, do NOT discount answer "A". You have to look at Micro$ofts general rule of thumb. The general rule of thumb is if you have more than 10-15 computers, you need a server with user accounts! Do not overthink this one.
It should be a no-brainer. Think of what MICROSOFT considers "appropriate". If there is a large number of PC's and/or the need for security, ALWAYS go with USER level and centralized security.
Some questions that I got:
I had two questions with clients that can't connect and are running NWLink. The correct answer, of course, is incorrect frame type. Same type questions (two more!!) with newly installed NIC cards that initialize but can't communicate. Wrong transceiver type.
A scenario question with a network of PC's, NT Servers and Mac's running IPX/SPX, NetBEUI and AppleTalk. You want to eliminate broacast storms. A requirement was that none of the clients would be affected. The solution was to remove all protocols but IPX/SPX and turn off bridging on the brouters. RED FLAG because of the Mac's. They cannot use IPX, therefore the requirement is not met.
Got both three city T-1 line scenarios that everyone seems to get. The triangle meets all requirements and the two T-1 lines meets requirement and one optionalNever got the 16 RAS modem question and I was GLAD because I just don't buy the modem speed/8*100*number of modems formula. If 4 modems could REALLY give you 1.44 MEG of bandwidth, why would anyone want to pay for a T-1 line?!?!
Know this question does get a lot of conflicting answers in 2 exams I did not get it…so MS may have pulled it…Basically people get the Mega BITS per second mixed up with Mega BYTES per second. 10 mega BYTES = 10 mega Bits * 8 (cause there is 8 bits in a byte) so basically it depends on your interpretation of a T-1 line 1.544 Mbps (mega bits or mega bytes)…see 1 Mega Byte = 8 Mega Bits…I leave this up to you to figure out…I was thankful I didn’t get it.
Read the brain dumps, know the protocols and what layer they are in, know the networking devices and the layer they are in, know the troubleshooting tools and when to use each one. As others have said, when in doubt, choose protocol analyzer or ATM! I think the PA was the correct answer every time it showed up. ATM was correct for about three different questions.
2.Copying a file from Ethernet to tokenring networks takes different amounts of time. 30 seconds one way and 5 mins the other way. This is because the packet sizes are different for Ethernet and tokenring
3.Troubleshooting network problems: You install the software and it works, but you still cannot see the network. If the systems is NetWare client, check the frame type, if it is not NetWare then check the transceiver.
4.You have a network with win95, NT and Macs.. you have many protocols. There are broadcast storms, but you have brouters. Turn off bridging on the router and user IPX and appletalk
5.To measure the bandwidth of a new CAT5 cable use a protocol analyzer.
6.The LAN protocol that supports compression is PPP, not slip or DLC
7.If anything fails after installation of an adapter card.. the IRQ setting is conflicting. One question specifies a systems not being able to boot from its scsi hard drive, in this case the card is conflicting with the scsi adapter.
8.Per trunk there should only be one grounded terminator on a 10base2 segment.
9.UNC name consists of a computer name and a share name.
10.High level protocol that allows for file and print sharing on an NT network = SMB.
11.NDIS/ODI allow multiple protocols to be used on compliant adapter cards. One answer to this is also "to allow network cards to be INDEPENDENT of protocols"
12.Only Win95 and Windows for workgroups allow share level security, WinNT uses User Level
13.If you can ping a server by IP address but cannot by name it should be WINS as the answer, but if that answer is not available it could be DNS.
14.You view a NETBIOS name on a network with WINS
15.To connect computers to DOS systems you have to use NETBIOS as the protocol
16.You find that the network is getting slower and the performance monitor reads CPU Time 4%, Page/sec 2$, Disk Utilization 44%. Install disk striping with parity (RAID 5)
17.A WAN link that allows you to use only as much bandwidth as you need is Frame Relay
18.The WAN Link that gives the most reliable connection over unreliable lines is X.25 due to its error correction.
19.Definition of Client/Server: Client makes requests, server does back end processing.
20.If two cards have the same MAC address on a network, you have to reset the MAC address
to factory defaults on one of them to use them both.
21.On a question that specifies that you need to cut network utilization
by 50%, and the solution
is to reduce the frame size, the answer is it does not satisfy the
requirements.
22.ATM is capable of data ,voice, etc etc.. over one line.
23.On a question about terminating there will be an answer that specifies
"terminate the network
properly" but another answer is "ground the network properly" pick
ground if it is available.
24.Three names CANNOT be duplicated on a NETBIOS network, Share, Computer
and
WORKGROUP. Domain will be an option but do not pick it.
25.IF you want to connect to a mainframe without loading new software,
use a gateway for
protocol translation.
26.On a bus network it is terminated on both ends and they read 50 OHMS,
one terminator is
also grounded, if this is not working then replace the cable.
27.Netbios names on a network can be up to 15 letters, be sure to read
the optional results if it is
a word problem about this topic. I.e. 15 digit HEX address can suffice
as a network name but
it gives no identification like "2nd floor" or station Ids.
28.Basic Rate Interface (BRI) ISDN are intended to replace regular phones
lines.
29.Best performance on a NIC, EISA (or micro channel) with shared memory
(not DMA or i/o)
30.Always use a bus topology if the network setup is going to be temporary
31.If there is a suspended ceiling, use STP, I think it’s a fire hazard
safety thing.
32.Two servers are locked up in a room to add addition security to the
servers, implement user
level security, make users change passwords every 30 days, and enable
auditing on access.
33.Assured delivery is associated with connection oriented networking, I
guess that tells you
what Connectionless oriented networking is associated with (not so
reliable delivery)
34.There is a question where a persons computer was working OK the day
before but today is
messed up (cannot access the network) the answer is that its probably
a faulty or
disconnected cable. Physical layer is usually where you start looking
for problems.
35.One question describes there being a 56K wan connection for a database
server. Users
complain about slowing on the server. It specifies that you have
already optimized the server
for the database. So the only thing left to do is to increase the
bandwidth and it asks which
answer gives the GREATEST performance upgrade, So the answer is to
upgrade to a T1
wan connection to the database server which was the one with the
greatest bandwidth.
36.If you want to monitor hubs bridges and routers on a network, I chose
that you should have
an SNMP management station. This can grab stuff from the hardware’s
MIB (management
information something) that has stats.
Word Problems
Your company wants to protect the server from hardware failure and periods
of downtime of 2
hours or more. There are 2 questions like this, they both ask for "tracking
access to data" make sure
that one of the solutions is to enable auditing. Other than that the other
question does have auditing
enabled and is entirely correct
Physical Repeater (broadband = amplifier)
55 Clients on 10baseT - slow at peak time - most ECONOMICAL way to improve
performance is
to replace 10BaseT hubs/concentrators with Switched Hubs.
What to use to discover a card sending meaningless and continuous data?
A Protocol analyzer
Using RG58 A/U and RG58 A - problems on network?
Replace RG58 A with RG58 A/U.
Your Using a dial up connection that cannot provide dynamic TCP/IP
addressing?
SLIP - PPP can provide.
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)
Which Protocols are routable from list?
Appletalk, TCP/IP, NWLINK IPX
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
what to use for a 100MB backbone?
Fibre Optic
Protocol Translation
Gateway
Faster than 100MB
ATM
Voice, Video and Data?
ATM
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.
What to use to monitor Network Traffic Over time?
Protocol Analyzer.
Reports that log network activity.
Protocol Analyzer
You have NT server and Windows 95 on network - monitor the network at the
packet level
Protocol Analyzer
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.
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.
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.
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.
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.
UNC
Normally this is \\servername\sharename but my exam had
\\computername\sharename
Remember that Windows NT runs a server service.
Put a network card in a computer, software initializes properly, can't see
anything, not hardware
related. BOTH Answers were frame setting but worded such as " frame setting
incorrect in client
computer" and " network adapter has incorrect frame setting".
Two easy ones on setting up a T1 between 3 cities, one solution 2 T1's
which did not fit required
and using 3 T1's which fit required and optionals of maintaining a link and
speed if one goes down.
NIC set as IRQ3----- conflict with Com2
Showed diagram of Mesh and asked what it was
What is 802.3 10BaseT refer to----UTP
Thinnet ----BNC
If 1 cable signal bleeds into another-crosstalk
If u have 200 computers and you want to segment them into 3 subnets and use
TCP/IP--- I chose
router
Scenario where there were apples, pc's, unix computers with slow
performance. Solution change all
computers to NWLINK/IPX and use routers---- did not meet requirement Apples
do not support NWlink
What uses information to determine hops---RIP
What protocols are routeable--- easier to remember that LAT DLC Netbeui are
not Voice and
Data---ATM
100MBS on WAN-ATM
Computers randomly having problems- 2 types of cable-RG58/U and RG58AU.
Replace 58/u with
58/AU
Connection oriented cable is assured delivery
Repeater to get UTP to go 300meters.
Had a scenario where there were say 3 servers and 200 total computers
running tcp/ip. No bridges
or routers. Utilization at 70%.
Req to cut to 50%
Option least cost
Provide for future additions
Solution was whole FDDI thing at 100MBs
Met required and one option
Connect pc's to mainframe-gateway
Client server----back end
The duplicate MAC address- reset to factory defaults. Some one on this site
wrote that can't be
done and that the card had to be replaced. Well, sorry, tell it to
Microsoft because that was not
offered as a solution. Also, while I am at it, someone else discussed the
problem, which I did not
have, that stated you have a 1 ft hanging ceiling what cable to install and
they stated it had to be
Plenum because of the ceiling and therefore coax. The ceiling does not
determine plenum or not. It is
whether it is cold air return or not. That means if fresh air is not
brought in, rather the system
(heat/AC) recycles the air then plenum must be used. We have installed non
plenum in many
companies who had the tile ceilings but who brought in fresh air.
Stupid scenario where solution was to decrease packet size and put your
heels together and click 3
times. Did not meet requirement 5 servers and want 1 100MBps backbone-Fiber
optic
Benefits of NDIS and ODI -- allow network adapters to be independent of
transport protocols
You have to copy a file from a computer to other what do you need? I chose
computername/sharename
You have 10baseT required result: 100mbps; options: cost and some
other more; proposed
solution: replace UTP 3 with UTP 5, hubs, network adapter. Works but
does not minimals
cost.
Same like 5 but with Switches: meet required and option
Have network with data on the servers, in separate room, NTFS ect. Reqired:
ensure
hardware reliability with 2 hours downtime acceptable, ensure data
protection, fault toleranc.
Optional: Protection against virus on network shares; logged tracking
of -Solution: Daily
backups, UPS, disk striping with parity, 40 day password change
policy, server locked in
closet, etc., granting user access, virus scans plus more stuff but no
mentions about auditing.
The solution satisfies:
a. The required and both optional results
b. The required and only one of the optional results
c. The required but none of the optional results
d. Neither the required nor the optional results
I chose b
Same 7 but with disk minnoring. Not meet required because disk
minnoring is not fault
toleranc
10 windows NT, what to do with security? User level
had two NetBIOS NAME QUESTIONS with hexadeziumal number (does not meet
optinals) and with 15 character nummber (meet required and optional)
you have a lot of listed protocols. What among is used to determine
the least busy and
shortest network routes: RIP
Q about PPP and SLIP
What is a characteristic of 802.3 10BaseT Ethernet?
a.RJ11 Connector at both ends
b.UTP w/RJ45 connector
c.BNC T-connector
d.50 Ohm
Had one with IRQs conflics. So You have to know IRQs
Had two questions like this one:You test your RG-58A/U cable and get
the following
readings:
cable =0 ohms
T connector = infinite
terminator = 50 ohms
What do you need to do?
You have 2 new computers on the network. You set both computers up the
same way:
Seting the default MAC address
What was intended to replace standard phone lines (PSTN)?
a. SLIP/PPP
b. Basic Rate ISDN
c. Primary Rate ISDN
d. Secondary Rate ISDN
I chose b
Susan uses a modem that is 5 years old. The connection will not
provide compression. What
communication protocol is she using? SLIP
What purpose does NDIS and ODI serve?
Which limitation are NDIS and Novell ODI designed to overcome?
(a) The need to dynamically bind a single protocol to multiple MAC drivers in
order to support more than one network operating system.
(b) The need for proprietary network interface drivers for
each network
operating system and protocol.
(c) Monolithic protocols do not conform to the OSI model.
(d) Monolithic protocols cannot be loaded into the upper
memory area.
Had two questions abot WAN: Your company has 3 locations: Chicago,
Atlanta and Los
Angeles. You would like to set up a WAN solution to enable
communication between the
offices.
--Required results: Transfer speed of at least 1 Mbps steady
--Optional results: Transfer speed of at least 1 Mbps and
assurance that
communication between the 3 locations will not suffer if one
link fails.
a.--Proposed solution: Install two T1 lines, one between Chicago and
Atlanta, one between
Atlanta and LA (meet only required). Install 3 lines (meet every thing)
had a lot about protocal analyzer, bridge, router, wich you can find in
this Brain site. So read it well.
It helps.