The IT Humidor

Entries categorized as ‘Geeky’

Four Readings of Edgar Allan Poe’s The Raven

October 30, 2009 · Leave a Comment

And now, in honor of Halloween, I present four different renditions of Edgar Allan Poe’s The Raven:

#4 – John Astin (It’s all in the eyes.)

 

#3 – James Earl Jones (I could listen to him read the phonebook, quite frankly, and it would still be cool.)

 

#2 – Christopher Walken (If he doesn’t scare you, you’re either the man himself or the #1 entry on this list.)

 

And the number one, possibly most frightening/disturbing rendition of The Raven. . .

#1 – Vincent Price (True greatness never fades.)

Categories: Geeky · Humor
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Academic Podcasts from Top Universities Available for Free Download

September 15, 2009 · 1 Comment

I’ve been looking at these for a while, and I finally got around to compiling a list to share.

  • iTunes U is a resource available through iTunes which grants access to thousands of classes and complete courses that have been podcasted from universities and colleges around the country (and the world).
  • MIT’s OpenCourseWare is an example of the content available from iTunes U, and a great stand-alone resource for any student that wants to get a preview, or overview, of courses offered at MIT.
  • TED offers videos of talks and lectures by prominent and influential teachers, thinkers, and artists from all over the world.
  • Academic Earth offers a wide variety of courses and lectures in video-format.
  • Video Lectures has a large selections of videos covering lectures in a broad range of topics.
  • Free Video Lectures offers an RSS feed of newly-submitted videos to keep users up to date of their selection.
  • Lecture Fox provides a list of available classes in the form of videos, audio, and notes.

Categories: Geeky · General Life · Schools
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Interoperability Between Linux and Active Directory

May 27, 2009 · Leave a Comment

I came across this blog the other day and I definitely felt the need to share. Keith Combs has put together a set of great videos on making Linux play nice on a Windows Server 2008 network by managing Linux workstations through AD.

Check out Keith’s blog for the full description of the following videos:

Categories: Certification · Geeky · General IT · LinkedIn · MCITP · MCTS · Work
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Visual Studio 2010 Beta 1 Available for Download Now

May 21, 2009 · Leave a Comment

Microsoft just announced that Visual Studio 2010 Beta 1 is available to evaluate. Channel 9 also has some great tutorials and discussions, including this one which involves the download and installation of the beta.

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CompTIA Server+ 2009 Beta

May 20, 2009 · Leave a Comment

Now that the Windows 7 beta exam is behind me, I’m gearing up to take the beta for the Server+ 2009 update.

You can find some great resources on the page linked to above, as well as from this blog. It follows the objectives outlined by CompTIA’s Server+ site.

The following is the current information linked from JDMurray’s entry on the TechExams.net blog.

A group of members here at TechExams.net are a little excited about the new beta exam for the revised CompTIA Server+ certification for 2009. OK, we’re excited at the prospect of picking up yet-another-certification for free while helping CompTIA test-run its latest revision of the Server+ exam. I already have the Server+ cert from way back in 2003, but my opinion is apparently as valuable a non-cert holder, so I was granted an opportunity by CompTIA to participate as well.

The objectives for the 2009 Server+ exam certainly show quite an improvement over the exam I took. I remember the big areas I had to study-up on were tape backup strategies, the numerous levels of RAID,  and the various types of SCSI technology. The revised Server+ exam adds objectives about networks and networking devices, file systems, motherboards and components, electronic media storage systems, and virtualization. There are also sections on physical security, disaster recover, and troubleshooting. The new Server+ is a lot like the A+ and Network+ certs combined, but from the server room tech’s point of view.

Anyway, I don’t want to review the new Server+ exam before I actually take it. Instead, this article presents a study reference for the Server+ exam for those people who are participating in the beta test, and for those who will take the exam after it is formally released. The following (long) listing is derived from the 2009 Server+ objectives and contains links to external Web sites (mostly Wikipedia) that provide information about each objective. Remember that CompTIA exams are entry-level, so it’s not necessary to become an expert on each objective, but please do try and learn a few new things along the way.

1.0 System Hardware

1.1 Differentiate between system board types, features, components and their purposes.

• Dip switchesjumpers
• Processor (single and multi)
• Bus types and bus speeds
• On board components
NICs
Video
Audio
USB
HID
Serial
Parallel
• Expansion slots
PCI
PCIe
o PCIx
AGP
ISA
• BIOS
• Riser Cardbackplane
• Storage connectors
SCSI
SATA
IDE
Floppy

1.2 Deploy different chassis types and the appropriate components

• Cooling
Fans
Water cooled
Passive
Active
o Shroud
o Ducts
o Redundant cooling
o Hot swappable
Ventilation
• Form Factor (tower, rackblade)
o Space utilization (U size, height, width, depth)
• Power
Connectors
Voltages
o Phase
• Redundant power
• Shut off switches – chassis intrusion
• Power buttons
• Reset buttons
• Diagnostic LEDs
• Expansion bays

1.3 Differentiate between memory features / types and given a scenario select appropriate memory

• Memory pairing
• ECC vs. non ECC
• Registered vs. non-registered
• RAID and hot spares
• Types
DDR
Fully buffered DIMM
DDR2
SDRAM
DDR3
• Memory compatibility
o Speed
Size
Pins
CAS latency
Timing
o Vendor specific memory
• On board vs. riser card

1.4 Explain the importance of a Hardware Compatibility List (HCL)

• Vendor standards for hardware
• Memory and processor compatibility
• Expansion cards compatibility
• Virtualization requirements

1.5 Differentiate between processor features / types and given a scenario select the appropriate processor

• Multicore
• Multiprocessor
• Cache levels
• Stepping
• Speed
• VRMs
• Execute disable (XD) or not execute (NX)
• Hyperthreading
• VT or AMD-V
• AMD vs. Intel (non-compatible CPUs)
• Processor architecture (RISCCISC)
• Vendor slot types
• 64-bit vs. 32-bit
• Heat dissipation (heat sinksfansliquid cooling)

1.6 Given a scenario, install appropriate expansion cards into a server while taking fault tolerance into consideration.

• Manufacturer specific
o Fax cards
o PBX cards
o Camera cards
o VoIP
• HBAs
• NICs
• Video
• Audio
• Storage controller (SCSI, SATA, RAID)
o SCSI low voltage / high voltage (LVD/HVD)
o SCSI IDs
o Cables and connectors
o Active vs. passive termination
• Port expansion cards
USB
IEEE 1394
Serial
Parallel

1.7 Install, update and configure appropriate firmware.

• Driver / hardware compatibility
• Implications of a failed firmware upgrade (redundant BIOS)
• Follow manufacturer instructions and documentation

2.0 Software

2.1 Install, deploy, configure and update NOS (Windows / *nix).

• Installation methods (optical media, USB, network share, PXE)
o Imaging – system cloning and deployment (Ghost, RIS/WDS, Altiris, virtualization templates)
• Bootloader
• File systems
FAT
FAT32
NTFS
VMFS
ZFS
EXT3
• Driver installation
o Driver acquisition
o Installation methods
o Require media
• Configure NOS
o Initial network
o User
o Device
o Roles
o OS environmental settings
o Applications and tools
• Patch management

2.2 Explain NOS security software and its features.

• Software firewall
Port blocking
o Application exception
o ACL
• Malware protection software
Antivirus
Antispyware
• Basics of file level permissions vs. share permissions

2.3 Given a scenario, implement and administer NOS management features based on procedures and guidelines

• User management
o Add and remove users
o Setting permissions
o Group memberships
o Policies
o Logon scripts
• Resource management
o ACLs
o Quotas
o Shadow volumes
o Disk management
o Performance monitoring
o Baselining
• Monitoring (tools and agents)
SNMP (MIBs)
WBEM (WMI)

2.4 Explain different server roles, their purpose and how they interact

• File server and print server
• Database server
• Web server
• Messaging server
• DHCP server
• Directory services server
• DNS server
• Application server
o Update server and proxy server
o Filtering server
o Monitoring server
o Dedicated
o Distributed
o Peer to peer
• Remote access server
• Virtualized services
• NTP server
• Explain the different between a workstation, desktop and a server
• Server shut down and start up sequence (one server vs. multiple servers vs. attached components)

2.5 Summarize server virtualization concepts, features and considerations

• Resource utilization
• Configuration
• Interconnectivity
• Management server
• Reasons for virtualization
Cost benefits
Redundancy
Green initiative
Disaster recovery
Testing environment
Ease of deployment

2.6 Describe common elements of networking essentials

• TCP/IP
Subnetting
DNS
DHCP
Classes
Gateways
Static vs. dynamic
IP stack
Ports
• Ethernet
Types
o Speeds
Cables
• VPN
• VLAN
• DMZ

3.0 Storage

3.1 Describe RAID technologies and its features and benefits

• Hot spare
• Software vs. hardware
• Cache read/write levels (data loss potential)
• Performance benefits and tradeoffs

3.2 Given a scenario, select the appropriate RAID level

• 0, 1, 3, 5, 6, 10, 50
• Performance benefits and tradeoffs

3.3 Install and configure different internal storage technologies

• Hot swappable vs. non-hot swappable
• SCSI, Ultra SCSI, Ultra320 (termination), LUNs
• SAS, SATA
• Tape
• Optical
DVD
DVD-R
CD-ROM
CD-R
CD-RW
Blu-Ray
• Flash
• Floppy (USB)
• Controller (firmware levels)
• Hard drive (firmware, JBOD)

3.4 Summarize the purpose of external storage technologies

• Network attached storage
• Storage area network
• Tape library
• WORM
• Optical jukebox
• Transport media
iSCSI
SATA
SAS
SCSI
Fiber Channel

4.0 IT Environment

4.1 Write, utilize and maintain documentation, diagrams and procedures

• Follow pre-installation plan when building or upgrading servers
• Labeling
• Diagram server racks and environment topologies
• Hardware and software upgrade, installation, configuration , server role and repair logs
• Document server baseline (before and after service)
• Original hardware configuration, service tags, asset management and warranty
• Vendor specific documentation

4.2 Given a scenario, explain the purpose of the following industry best practices

• Follow vendor specific server best practices
o Documentation
o Tools
o Websites
• Explore ramifications before implementing change – determine organizational impact
• Communicate with stakeholders before taking action and upon completion of action
• Comply with all local laws / regulations, industry and corporate regulations
• Purpose of Service Level Agreement (SLAs)
• Follow change control procedures
• Equipment disposal

4.3 Determine an appropriate physical environment for the server location

• Check for adequate and dedicated power, proper amperage and voltage
o UPS systems (check load, document service, periodic testing)
o UPS specifications (run time, max load, bypass procedures, server communication and shut down, proper monitoring)
• Server cooling considerations – HVAC
o Adequate cooling in room
o Adequate cooling in server rack
o Temperature and humidity monitors

4.4 Implement and configure different methods of server access

• KVM (local and IP based)
• Direct connect
• Remote management
o Remote control
o Administration
o Software deployment
o Dedicated management port

4.5 Given a scenario, classify physical security measures for a server location

• Physical server security
o Locked doors
o Rack doors
CCTV
o Mantraps
o Security personnel
• Access control devices (RFIDkeypadspinpads)
o Biometric devices (fingerprint scannerretina)
• Security procedures
o Limited access
o Access logs
o Limited hours
• Defense in-depth – multiple layers of defense
• Reasons for physical security
o Theft
o Data loss
o Hacking
• Secure documentation related to servers
o Passwords
o System configurations
o Logs

5.0 Disaster Recovery

5.1 Compare and contrast backup and restoration methodologies, media types and concepts

• Methodologies (fullincrementaldifferential)
Snapshot
Copy
Bare metal
Open file
Databases
Data vs. OS restore
Rotation and retention (grandfather, father and sonleaning tower)
• Media types
Tape
Disk
WORM
Optical
Flash

• Backup security and off-site storage
• Importance of testing the backup and restoration process

5.2 Given a scenario, compare and contrast the different types of replication methods

• Disk to disk
• Server to server
o Clustering
o Active/active
o Active/passive
• Site to site
• Site types
Cold site
o Hot site
o Warm site
o Distance requirements

5.3 Explain data retention and destruction concepts

• Awareness of potential legal requirements
• Awareness of potential company policy requirements
• Differentiate between archiving and backup

5.4 Given a scenario, carry out the following basic steps of a disaster recovery plan

• Disaster recovery testing process
• Follow emergency procedures (people first)
• Use appropriate fire suppressants
• Follow escalation procedures for emergencies
• Classification of systems (prioritization during recovery)

6.0 Troubleshooting

6.1 Explain troubleshooting theory and methodologies

• Identify the problem and determine the scope
o Question users/stakeholders and identify changes to the server / environment
o Collect additional documentation / logs
o If possible, replicate the problem as appropriate
o If possible, perform backups before making changes
• Establish a theory of probable cause (question the obvious)
o Determine whether there is a common element of symptom causing multiple problems
• Test the theory to determine cause
o Once theory is confirmed determine next steps to resolve problem
o If theory is not confirmed re-establish new theory or escalate
• Establish a plan of action to resolve the problem and notify impacted users
• Implement the solution or escalate as appropriate
o Make one change at a time and test/confirm the change has resolved the problem
o If the problem is not resolved, reverse the change if appropriate and implement new change
• Verify full system functionality and if applicable implement preventative measures
• Performa a root cause analysis
• Document findings, actions and outcomes throughout the process

6.2 Given a scenario, effectively troubleshoot hardware problems, selecting the appropriate tools and methods

• Common problems
Failed POST
Overheating
Memory failure
o Onboard component failure
Processor failure
Incorrect boot sequence
o Expansion card failure
Operating system not found
Drive failure
Power supply failure
o I/O failure
• Causes of common problems
o Third party components or incompatible components
o Incompatible or incorrect BIOS
o Cooling failure
o Mismatched components
o Backplane failure
• Environmental issues
o Dust
o Humidity
o Temperature
o Power surge / failure
• Hardware tools
o Power supply tester (multimeter)
o System board tester
o Compressed air
o ESD equipment

6.3 Given a scenario, effectively troubleshoot software problems, selecting the appropriate tools and methods

• Common problems
o User unable to logon
o User cannot access resources
o Memory leak
BSOD / stop
o OS boot failure
o Driver issues
o Runaway process
o Cannot mount drive
o Cannot write to system log
o Slow OS performance
o Patch update failure
o Service failure
o Hangs no shut down
o Users cannot print
• Cause of common problems
Malware
o Unauthorized software
Software firewall
o User Account Control (UAC/SUDO)
o Improper permissions
o Corrupted files
o Lack of hard drive space
o Lack of system resources
o Virtual memory (misconfigured, corrupt)
Fragmentation
o Encryption
o Print server drivers/services
o Print spooler
• Software tools
o System logs
o Monitoring tools (resource monitor, performance monitor)
Defragmentation tools

6.4 Given a scenario, effectively diagnose network problems, selecting the appropriate tools and methods

• Common problems
o Internet connectivity failure
o Email failure
o Resource unavailable
o DHCP server mis-configured
o Non-functional or unreachable
o Destination host unreachable
o Unknown host
o Default gateway mis-configured
o Failure of service provider
o Can reach by IP not by host name
• Causes of common problems
o Improper IP configuration
o VLAN configuration
o Port security
o Improper subnetting
o Component failure
o Incorrect OS route tables
o Bad cables
o Firewall (mis-configuration, hardware failure, software failure)
o Mis-configured NIC, routing / switch issues
o DNS and/or DHCP failure
o Mis-configured hosts file
• Networking tools
ping
tracert / traceroute
ipconfigifconfig
nslookup
net usemount
route
nbtstat
netstat

6.5 Given a scenario, effectively troubleshoot storage problems, selecting the appropriate tools and methods

• Common problems
o Slow file access
o OS not found
o Data not available
o Unsuccessful backup
o Error lights
o Unable to mount the device
o Drive not available
o Cannot access logical drive
o Data corruption
o Slow I/O performance
o Restore failure
o Cache failure
o Multiple drive failure
• Causes of common problems
o Media failure
o Drive failure
o Controller failure
o HBA failure
o Loose connectors
o Cable problems
o Mis-configuration
o Improper termination
o Corrupt boot sector
o Corrupt file system table
o Array rebuild
o Improper disk partition
o Bad sectors
o Cache battery failure
o Cache turned off
o Insufficient space
o Improper RAID configuration
o Mis-matched drives
o Backplane failure
• Storage tools
o Partitioning tools
o Disk management
o RAID array management
o Array management
o System logs
o Net use / mount command
o Monitoring tools

Categories: Certification · Geeky · General IT · LinkedIn · Work
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Saving the Newspaper Industry by Killing Off Newspapers

May 7, 2009 · Leave a Comment

Something tells me this is a prelude of things to come. Quite frankly, it’s about time for it. While I don’t particularly want to see any newspapers go down the drain, it’s time to rethink the whole dead-tree concept and move towards electronic media. Using the Kindle to deliver content you would normally have paid for to have printed on paper is actually a very good idea. As newspapers begin to focus on their online presence, they’ll need to decide if they want to charge for premium content, make any free content available whatsoever, or if they want to find a balance between the two. I believe, however, that traditional newspapers will go the way of the Dodo sooner than later and offering customers who enjoy “holding the news in their hands” an option like the Kindle is a happy compromise.

Books, in my opinion, are another story. We can sustain printing a finite number of books for a while longer, (preferably on recycled paper to cut down on that whole slash-and-burn nonsense,) but I see e-books taking hold more firmly than in the past. Ask any Kindle owner who is also an avid reader and they’ll tell you they love the thing. If nothing else, making a move like the one in the comic above would force the potential for technologies like the Kindle, (aalong with other handheld displays like phones and PDAs,) to advance more quickly than they have so far.

Here’s to hoping for tricorders and LCARS message pads before too long, engage.

Categories: Geeky · General Life
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$100 Discount on TechNet Plus

April 17, 2009 · 3 Comments

TechNet Plus, (download only, not the kind where they ship you DVDs,) from Microsoft usually runs $349 to sign up for a year, then $249 per year after that. A friend of mine shot me an email today for a $100 dicount on a subscription. I’m not sure if it’s part of a special event or it’s simply a discount code for the sake of signing up new customers, but it’s a great opportunity to save some money and pick up just about every piece of software Microsoft makes. Keep in mind, this not only includes the software that is out now, but any new software that’s eligible for TechNet, as well as updates to things like Office or Windows, (think Office 2010 and Windows 7). Sadly, developer-tools like Visual Studio are not included in TechNet since they are considered to be under the MSDN umbrella. This is good for a new subscription only, not renewals.

The subscription page can be found here.

Select Microsoft TechNet Plus Direct Subscription, enter the promo code TW7OBA in the field that reads If you have a Promotion Code, please enter it here and then hit the button to go to the next page. Enjoy!

Categories: Certification · Geeky · General IT · LinkedIn · MCSE · MCTS · Work
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Microsoft Announces Beta Exam for 71-680: TS: Windows 7, Configuring

April 16, 2009 · Leave a Comment

Microsoft has announced that April 27th will be the day that they make the Windows 7 beta exam open to the public. This will be a similar exam to 70-620 which focuses on configuring Vista, and 70-270 which is all about Windows XP Pro. No news yet if the Windows 7 exam will count towards MCSA/MCSE, but you’d better believe that it’ll count towards MCITP: Enterprise Administrator. You will obtain a stand-alone Technology Specialist (TS) designation with the exam, just as with other next-generation Microsoft exams. For some documentation, take a look at the Windows 7 Technical Library Roadmap. For a good discussion on the ins and outs of the  exam check out the dedicated thread on TechExams.net.

Register with Prometric starting April 27th. The actual testing window is from May 5th – May 18th. Oh, and you have to use promo code WIN7J in order to sign up for the exam.

 

Also, today is National High-Five Day.

Categories: Certification · Geeky · General IT · LinkedIn · MCSE · MCTS · Work
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There Are Four Types of People in the World

April 14, 2009 · Leave a Comment

One of four titles used to classify someone based on their technical and social skills. The other three titles are nerd, dork, and normie. The difference between the four titles can be easily shown in table form:

……………..Technical ……. Social
Title ……… Skills …………. Skills
———- —————- ————
Normie …….. No ………….. Yes
Geek ……….. Yes …………. Yes
Nerd ……….. Yes …………. No
Dork ……….. No ………….. No

Normie: A normal person. Blah.

Geek: An outwardly normal person who has taken the time to learn technical skills. Geeks have as normal a social life as anyone, and usually the only way to tell if someone is a geek is if they inform you of their skills.

Nerd: A socially awkward person who has learned technical skills due to the spare time they enjoy from being generally neglected. Their technical knowledge then leads normies to neglect them even further, leading to more development of their technical skills, more neglection, etc. This vicious cycle drives them even more into social oblivion.

Dork: A person who, although also socially awkward, doesn’t have the intelligence to fill the void with technical pursuits, like a nerd, and is forced to do mindless activities. Almost always alone. Usually with an XBox. Like playing Halo. All day. Every day. Not even understanding how the Xbox is making the pretty pictures on the screen. Very sad.

Categories: Geeky · Humor
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Top 100 Viral Videos of the Internet

April 14, 2009 · Leave a Comment

This is a list that will suck up far too much of your time. Posted today on LaughingSquid, I definitely had to share:

Top 100 Iconic Internet Videos

(Sadly, while on the list, the Numa Numa song didn’t quite make the top 10.)

Categories: Geeky · General Life · Humor · NSFW · Stupid People
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