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You work as a Network Administrator for Tech Perfect Inc. For security issues, the company requires you to harden its routers. You therefore
write the following code:
Router#config terminal
Router(config) #no ip bootp server
Router(config) #no ip name-server
Router(config) #no ntp server
Router(config) #no snmp server
Router(config) #no ip http server
Router(config) #^Z
Router#
What services will be disabled by using this configuration fragment?
Each correct answer represents a complete solution. Choose all that apply.
See the explanation below.
The above configuration fragment will disable the following services from the router:
The BootP service
The DNS function
The Network Time Protocol
The Simple Network Management Protocol
Hyper Text Transfer Protocol
You work as the Network Administrator for McNeil Inc. The company has a Unix-based network. You want to identify the secure terminals from where the root can be allowed to log in. Which of the following Unix configuration files can you use to accomplish the task?
See the explanation below.
In Unix, the /etc/securetty file is used to identify the secure terminals from where the root can be allowed to log in.
Answer B is incorrect. In Unix, the /etc/ioports file shows which I/O ports are in use at the moment.
Answer A is incorrect. In Unix, the /etc/services file is the configuration file that lists the network services that the system supports.
Answer C is incorrect. In Unix, the /proc/interrupts file is the configuration file that shows the interrupts in use and how many of each
there has been.
Which of the following tools can be used by a user to hide his identity?
Each correct answer represents a complete solution. Choose all that apply.
See the explanation below.
A user can hide his identity using any firewall (such as IPChains), a proxy server, or an anonymizer.
Which of the following services are provided by the proxy servers?
Each correct answer represents a complete solution. Choose all that apply.
See the explanation below.
A proxy server is a very important element for firewall applications. The services that it provides are as follows:
Hide network resources: Proxy replaces the network IP address with a single IP address. Multiple systems can use a single IP
address.
Logging: A proxy server can log incoming and outgoing access, allowing a user to see every possible details of successful and failed
connections.
Cache: A proxy server can save information obtained from the Internet. It regularly updates these copies and automatically shows
these pages, and will thus not need to access the Internet to view them.
You work as a Software Developer for UcTech Inc. You want to create a new session. Which of the following methods can you use to accomplish the task?
Each correct answer represents a complete solution. Choose all that apply.
See the explanation below.
The getSession() method of the HttpServletRequest interface returns the current session associated with the request, or creates a new
session if no session exists. The method has two syntaxes as follows:
public HttpSession getSession(): This method creates a new session if it does not exist.
public HttpSession getSession(boolean create): This method becomes similar to the above method if create is true, and returns the
current session if create is false. It returns null if no session exists.
Answer B is incorrect. The getSession(false) method returns a pre-existing session. It returns null if the
client has no session
associated with it.
Answer A and E are incorrect. There is no such method as getNewSession() in Java.
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