Who, What, Why When, Where….

Just “Who” for now, or more to the point, “Whois” (pronounced/spoken as 2 words “Who is”).

“Whois” is a service or function provided on the internet that allows you to look up and domain name addresses (www.domain.com, wwww.domain.org, etc). The address information is kept in central databases, where such information as, when an address was provided, who the address was provided to, possibly specific contact information regarding the owner, etc.

The information will also show what network the domain is registered in, where you might be able to find out certain geographic information regarding the location of the registrant.

For instance if the domain name was privately held the database will contain the full name and address, plus contact information (email address, or possibly phone number) for the registrant. If the domain name is registered to a company, then the companies name and address will be registered along with contact information specific to the people who look after the domain for the company. People like the domain administrator and any web based administrators.
One other important piece of information is the expiry date for the domain name. This is very important, since, if the domain name expires, who could potentially lose your rights to the name and it could be picked up by someone else. This would be a catastrophe for a company that relies on its domain name for its online business and contact information.

Now, those wily ones among you will say, “but doesn’t that mean unscrupulous people can scrape information from the Whois database and use it for spanning purposes?” The answer used to be yes, and many pain in the neck spammers did exactly that. However, the process has changed now, and if you want to look up something in the Whois database. You have to respond to a request to enter a set of letters that are changeable for every request and are tied to the request (this is called “bots”). So this has removed the spammers capability of running scripts to gather the information and has cut out this practice…at least for now.

Lets start with, just what is an IP? What does it mean? Why do we need it?
IP stands or Internet Protocol.

An IP address is a unique identity ID for a device communicating over the internet.
Therefore, any device that communicates over the internet must have a unique IP address. An IP address is made up of 4 sets of numbers, each set within the range of 0-256, e.g. 127.0.0.2, 234.100.200.23, etc. Any combination of the 4 sets, with each set having a number in the approved range.

Okay, so now we know what it is. How do you get one? Is it built into the device? Can you buy one? Can you subscribe to one while you are connected to the internet?
The answer is “yes” to every question. Although with certain caveats for each one…”damn those caveats!”. As you can imagine, with the IP address range having built-in limitations due to it’s physical size (we’ll get to that in a moment). There has to be some method that allows for seemingly infinite allocation of unique addresses…and there is.

The IP address is made up of 2 sections. The first section defines the network. The second section defines the device within the network.

So, there is a global service that provides unique IP addresses to your ISP. The world is then the network and the ISP is the device. Now your ISP will give you an address within it’s own address space (the 4 section IP address) as though it were the global service. When you send messages to some address, your IS will receive it and send it along to another ISP who is hosting the web site you are referring to. This is done using a combination of IP addresses and domain names (a topic for another day).

So, global IP addresses are assigned from a central organization controlling a certain geographic location. This is usually to ISP’s, but individuals can also ask for what is known as a static IP address. a the are Your ISP will then allocate an address to you through association with a domain name. This basically makes your domain name the equivalent to your IP address and allows your ISP to assign different physical IP addresses to your domain name at their leisure. You may have noticed this when you checked your IP address on the internet and it has changed from what it was the last time you logged into your system.

Here you go, multiple choice questions and answers for 000-938 exam

Question No 1:

Which statement is true about IBM Tivoli Netcool Impact?

A. A data source needs to be defined for any policy to run.
B. A Jabber server should be set up in order to run IBM Tivoli Netcool Impact policies.
C. An e-mail server should be set up in order to run IBM Tivoli Netcool Impact policies.
D. An ObjectServer data source needs to be defined for policies to update ObjectServer events
directly.

Answer: D


Question: 2


For what is the ncLshutdown script used?

A. To shut down the GUI server, impact, and JRExec server processes
B. To stop event processing and policy execution in the IBM Tivoli Netcool Impact server
C. To shut down the IBM Tivoli Netcool Impact server independently from the application server
D. To gracefully shut down the PostgresSQL database and the IBM Tivoli Netcool Impact server

Answer: C

Question: 3

A customer has a requirement that IBM Tivoli Netcool Impact should only act upon updated events, and never act upon new events. How would IBM Tivoli Netcool Impact be configured to meet this
requirement?

A. Add a field to the ObjectServer that operators can manually update to trigger policies
B. Include a function in every policy that exits immediately if the IDUC value of the event is U
C. Add time stamp filtering to the Event Reader, comparing the StateChange value to
FirstOccurrence
D. Select the Get updated events checkbox in the Event Mapping tab of the Event Reader
Configuration window

Answer: C

Question: 4

A customer has a policy that is using the JRExec action to call an external script. The script requires four parameters to function correctly. What can be done to ensure the policy does not call the JRExec action if there are fewer than four parameters?

A. Define the number of parameters in the JRExec configuration files
B. Configure the external script to exit if it receives fewer than four parameters
C. Configure the JRExec action to exit if it receives fewer than four parameters
D. Configure the policy with an exception handler to check for the number of parameters


Answer: D