What is a firewall?
Describe, genrally, how to manage a firewall
What is a Denial of Service attack?
What is a “spoofed” packet?
What is a wildcard mask, and how is it different from a netmask?
How do you configure a Cisco switch or router? What are the steps needed?
How would I place an interface into trunking mode?
What is the difference between layer 2 and layer 3 in the OSI model?
What is the difference between a hub, switch, and router?
What is a VLAN?
What is the difference between TCP and UDP?
Also posted in Unix/Linux |
OSPF
Describe OSPF in your own words.
OSPF areas, the purpose of having each of them
Types of OSPF LSA, the purpose of each LSA type
What exact LSA type you can see in different areas
By admin | April 24, 2005
List the files in current directory sorted by size ? - ls -l | grep ^- | sort -nr
List the hidden files in current directory ? - ls -a1 | grep "^\."
Delete blank lines in a file ? - cat sample.txt | grep -v ‘^$’ > new_sample.txt
Search for a sample string in particular files [...]
Also posted in General, Unix/Linux |
By admin | January 30, 2005
Used for a written exam by a company in India.
Why is Bluetooth called a cable replacement technology? - Bluetooth technology allows the creation of Personal Area Networks without cables or wires that are usual in home networks.
Give a generic description of Bluetooth? - Bluetooth is a low-cost, short-range (RF) links between mobile PCs, mobile phones [...]
Also posted in Hardware |
By admin | October 12, 2004
Can we use the constructor, instead of init(), to initialize servlet? - Yes , of course you can use the constructor instead of init(). There’s nothing to stop you. But you shouldn’t. The original reason for init() was that ancient versions of Java couldn’t dynamically invoke constructors with arguments, so there was no [...]
Also posted in Database, Java |
By admin | October 9, 2004
Can there be an abstract class with no abstract methods in it? - Yes
Can an Interface be final? - No
Can an Interface have an inner class? - Yes.
By admin | October 9, 2004
What is garbage collection? What is the process that is responsible for doing that in java? - Reclaiming the unused memory by the invalid objects. Garbage collector is responsible for this process
What kind of thread is the Garbage collector thread? - It is a daemon thread.
By admin | October 5, 2004
What is the relationship between local interfaces and container-managed relationships? - Entity beans that have container-managed relationships with other entity beans, must be accessed in the same local scope as those related beans, and therefore typically provide a local client view. In order to be the target of a container-managed relationship, an entity bean with [...]
By admin | September 23, 2004
What are the implicit objects? - Implicit objects are objects that are created by the web container and contain information related to a particular request, page, or application. They are: request, response, pageContext, session, application, out, config, page, exception.
Is JSP technology extensible? - Yes. JSP technology is extensible through the development of custom actions, or [...]
By admin | September 3, 2004
Describe the OSI model.
What is the difference between a repeater, bridge, router? Relate this to the OSI model.
