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Linux Administration
TCP/IP Concepts
Four Layers TCP/IP
Application Layer Protocol
TCP/IP Protocol
Transport Layer
Link Layer
IP Addressing Netmasks
Netmask Structure Usage
Networking Conclusion
TCP/IP Configuration
Configuration Process
Name Service Resolver
Name Service Methods
Configure Network Interface
dmesg Command Output
Listing Configuration Interfaces
IP Address Netmask
Changing IP Address
Configuring Routing Table
What is ARP?
ARP - Quiz
Single Machine Host Names
TCP/IP Conclusion
Network Daemons
Clients Servers
TCP-UDP
Port Numbers
Known Port Numbers
Ephemeral Port Numbers
TPC/UDP Port Numbers-Quiz
Listening Server Process
Iterative Concurrent Servers
inetd Super Server
/etc/inetd.conf
Stand Alone Servers
Remote Procedure Calls
Check Port Mapper Process
Survey Common Services
Telnet Clients Servers
FTP Bulk Data Transfer Service
Berkeley Commands rloginrsh
Domain Name Service
SMTP
NNTP
xprotocol Display
HTTP
Port Number Service Conclusion
Network Monitoring
ping command
Determining listening Servers
Network Monitoring - Quiz
The correct answers are indicated below, along with text that explains the correct answers.
1.
What is the purpose of the
ping
command?
Please select the best answer.
A.
To see if a remote machine is working
B.
To query kernel tables for network status information
C.
To follow packets through the network and detect problem network points
D.
To watch network traffic on an individual-packet level
2.
For what purpose would you use netstat?
Please select the best answer.
A.
To see if a remote machine is working
B.
To query kernel tables for network status information
C.
To follow packets through the network and detect blockages
D.
To watch network traffic on an individual-packet level
3.
Which command would you use to monitor all listening TCP servers on your machine?
Please select the best answer.
A.
netstat -ta
B.
netstat -i
C.
netstat -r
D.
netstat -s
4.
What does the output from traceroute show?
Please select the best answer.
A.
Which users have root permissions and which ones do not
B.
A statistical picture of how the different network interfaces are being used
C.
A network address and an appropriate gateway for reaching that network
D.
The sequence of machines across which packets travel
5.
For what would you use the ping option
-n
?
Please select the best answer.
A.
To stop after sending a certain number of packets
B.
To send a packet of a given size
C.
To direct it to ignore the routing table
D.
To direct it not to look up DNS names, only numbers
6.
When reading the output from
netstat -i
, what does the column headed RX-OK mean?
Please select the best answer.
A.
The number of errors
B.
The number of frames dropped
C.
The number of frames received successfully
D.
The number of buffer overruns
7.
How would you continually monitor network status on your machine?
Please select the best answer.
A.
netstat -s
B.
netstat -ct
C.
netstat -m
D.
netstat -i
8.
What is the purpose of tcpdump?
Please select the best answer.
A.
To monitor network traffic on a particular segment
B.
To locate failures far from your local network
C.
To view the routing table on your machine
D.
To check to see if a remote machine is active
Correct answers:
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Quiz Explanation
Red Hat Linux Certification