1.What is a NIC?
Network Interface Card
2.What is a MAC Address?
MAC- Media Access Control .its a unique identifier defined for certain hardware/network adapters
3.When would you use a crosslink cable?
To link computers using this cable..You need to assign the static Ip if u need to
4.What are the main advantages and disadvantages of Fiber-Optic-based networks?
Adv:More efficient and quality of service is better.
Dis: Expensive, complicated
5.What is the difference between a Hub and a Switch?
Hub is device to connect two devices, switch is a network bridge which processes and routes data approirately over network layer of OSI Reference model
6.On which OSI layer can a router be found?
physical layer
7.What is CSMA/CD?
Carrier sense multiple access with collision detection
8.What is multicast?
to send data/info to group of computers using same network
9.What is Broadcast?
TO send data/info to all of the members of the network..( simple 176.16.255.255 for class B network)
10.What is the difference between TCP and UDP?
TCP-Transmission Control Protocol
UDP- user Datagram protocol
UDP is user assisted program and converts the application into the encapsulated form and makes it end point for data to send and then TCP helps in transmission or broadcast!
11.Describe some of the settings that are added by TCP and by UDP to the packet's header.
ans:Its called Encapsulation
12.What are TCP Ports? Name a few.
As described above End points are called Ports.
5/TCP,UDP Remote Job Entry
7/TCP,UDP Echo
13.What is a TCP Session?
the layer that establishes ,manages and terminates the session between two communticating devices
14.What three elements make up a socket?
Protocol (TCP, UDP or raw IP).
Local socket address (Local IP address and port number)
Remote socket address
15.What will happen if you leave the default gateway information empty while manually configuring TCP/IP?
i think it will automatically get it from DNS server
16.What will happen if you execute the following command: "arp –d *"?
- deletes all the ip address information
17.What is ICMP?
Internet Control Message Protocol
18.When would you use the ping command with the "-t" switch?
to get the ping back from other computer with no packet loss
19.What command-line tool would help you discover for which port numbers your computer is listening?
netstat -n (on Dos prompt)
20.What is APIPA? How would you recognize it?
Automatic Private IP Addressing
for small network if u see something default automatic numeric values entered in a device that is attached you can see someone novice has done that using APIPA
21.What is a Cyclic Redundancy Check?
its a function that checks the input data value/length and than produces the output usualy of integral of 32 bits
22.What would you type in at a command prompt to view the IP settings for the computer that you are sitting at?
"ipconfig"
23.What command would you type in at a command prompt to view the IP address of the remote computer?
Ping
Netstat
24.What is the W Value for class B?
25.What is the Net ID of an IP Address of 18.9.25.3 with Subnet Mask of 255.0.0.0?
CLASS A network with NET ID 18.0.0.0
26.What is CIDR?
Classless Inter-Domain Routing
27.What is 255.255.255.255 used for?
Research
28.What is the maximum number of hosts for a Class B Network?
16384 (2(raise to power N)- 2)
29.What is the (default) class type of 195.152.12.1?
CLASS B with NET ID 195.152.0.0
30.What is the subnet mask for 10.0.10.1/17?
255.0.0.0
31.What is the result when changing from a subnet mask of 255.255.224.0 to a subnet mask of 255.255.240.0?
hmm..broadcast and binary address changes i guess
32.How can you access a shared folder from a remote computer? Name at least 3 methods.
-from ur pc my network place
- using a mapped drive
-Universal Naming Convention (UNC)
Network Interface Card
2.What is a MAC Address?
MAC- Media Access Control .its a unique identifier defined for certain hardware/network adapters
3.When would you use a crosslink cable?
To link computers using this cable..You need to assign the static Ip if u need to
4.What are the main advantages and disadvantages of Fiber-Optic-based networks?
Adv:More efficient and quality of service is better.
Dis: Expensive, complicated
5.What is the difference between a Hub and a Switch?
Hub is device to connect two devices, switch is a network bridge which processes and routes data approirately over network layer of OSI Reference model
6.On which OSI layer can a router be found?
physical layer
7.What is CSMA/CD?
Carrier sense multiple access with collision detection
8.What is multicast?
to send data/info to group of computers using same network
9.What is Broadcast?
TO send data/info to all of the members of the network..( simple 176.16.255.255 for class B network)
10.What is the difference between TCP and UDP?
TCP-Transmission Control Protocol
UDP- user Datagram protocol
UDP is user assisted program and converts the application into the encapsulated form and makes it end point for data to send and then TCP helps in transmission or broadcast!
11.Describe some of the settings that are added by TCP and by UDP to the packet's header.
ans:Its called Encapsulation
12.What are TCP Ports? Name a few.
As described above End points are called Ports.
5/TCP,UDP Remote Job Entry
7/TCP,UDP Echo
13.What is a TCP Session?
the layer that establishes ,manages and terminates the session between two communticating devices
14.What three elements make up a socket?
Protocol (TCP, UDP or raw IP).
Local socket address (Local IP address and port number)
Remote socket address
15.What will happen if you leave the default gateway information empty while manually configuring TCP/IP?
i think it will automatically get it from DNS server
16.What will happen if you execute the following command: "arp –d *"?
- deletes all the ip address information
17.What is ICMP?
Internet Control Message Protocol
18.When would you use the ping command with the "-t" switch?
to get the ping back from other computer with no packet loss
19.What command-line tool would help you discover for which port numbers your computer is listening?
netstat -n (on Dos prompt)
20.What is APIPA? How would you recognize it?
Automatic Private IP Addressing
for small network if u see something default automatic numeric values entered in a device that is attached you can see someone novice has done that using APIPA
21.What is a Cyclic Redundancy Check?
its a function that checks the input data value/length and than produces the output usualy of integral of 32 bits
22.What would you type in at a command prompt to view the IP settings for the computer that you are sitting at?
"ipconfig"
23.What command would you type in at a command prompt to view the IP address of the remote computer?
Ping
Netstat
24.What is the W Value for class B?
25.What is the Net ID of an IP Address of 18.9.25.3 with Subnet Mask of 255.0.0.0?
CLASS A network with NET ID 18.0.0.0
26.What is CIDR?
Classless Inter-Domain Routing
27.What is 255.255.255.255 used for?
Research
28.What is the maximum number of hosts for a Class B Network?
16384 (2(raise to power N)- 2)
29.What is the (default) class type of 195.152.12.1?
CLASS B with NET ID 195.152.0.0
30.What is the subnet mask for 10.0.10.1/17?
255.0.0.0
31.What is the result when changing from a subnet mask of 255.255.224.0 to a subnet mask of 255.255.240.0?
hmm..broadcast and binary address changes i guess
32.How can you access a shared folder from a remote computer? Name at least 3 methods.
-from ur pc my network place
- using a mapped drive
-Universal Naming Convention (UNC)
Thanks for this materials
ReplyDeleteExcellent question & answer for network administrator/freshers - thanks.you can given networking question & answer on Tutorial Solution
ReplyDeleteNumber 28 is wrong. A class B address (255.255.0.0) has a maximum number of 65,534. Why? 255.255.0.0 = 16 bits. 32 (max number of bits) - 16 = 16. 2^16 = 65,536 - 2 = 65,534.
ReplyDeleteNo.30 Ans is wrong.
ReplyDeleteThe Ans is 255.255.128.0
This comment has been removed by the author.
DeleteYes this is right answer.
Deleteno.6 is wrong
ReplyDeleteans: Network layyer 3rd layyer
buddy router is on layer three device means network layer don't post wrong answer.
ReplyDeletebuddy u wrong again ques. no 30 subnet mask of 10.0.10.1/17 is 255.255.128.0 if u want to know how it come i will tell you follow this link www. facebook.seowebtricks.com
ReplyDeleteMost of the answers are incorrect or not sufficent... Search yourself for answers.
ReplyDeleteplzz make correct answers dude
ReplyDeletethanks guys for the correct answers
ReplyDeleteMany answers are wrong..
ReplyDeleteits good to learn all network admin freshers
ReplyDeleteMy brothers you all giving the remarks against Ans above but not sure about that and just hanky panky reply like Many answers are wrong, most answers are incorrect bala bala bala please if have and ability to resolve this please Answer it and do not misguide other who want to learn or know from here its request plz dont mind.
ReplyDeleteQuestion 18 is incorrect. The -t will have the ping repeat
ReplyDelete#5 is also wrong. Hubs are dummy switches that are used to connect multiple computers to a network but do not break up collision domains. So when the hub receives a packet it sends it out all ports to find the right computer. Hubs are layer 1 (physical) on the OSI model. Switches have a MAC address table so when it receives that same packet, it knows exactly which port to send the information to. Also switches allow for VLANs which creates broadcast domains and segregates traffic. Now as far as routing goes...switches do have routing capability but only if they are a layer 3 switch. So since the question doesn't specify just assume its a layer 2 switch so it operates on the datalink layer or layer 2
ReplyDeleteAnother question you might get asked is "What is Ciscos Three-Layered Hierarchical Model?"
ReplyDeleteA. Access Layer
Distribution Layer
Core Layer.
I dont like the answer for #10. When an interviewer asks this question they are looking for key words. Difference between UDP and TCP. TCP is connection oriented. and UDP is Connectionless
ReplyDeleteTHey might follow up with "What are teh benefits of each and what uses that protocol."
TCP is more reliable. It uses a 3 way hand shake to verify the data has arrive. Its good for SMTP HTTP, FTP, Telnet...things that need verification.
UDP just sends out data without guaranteeing delivery. Because of this UDP is faster. SO its good for stuff where speed is more important. Video, VOice, DHCP, DNS.
It seems as though the person who answered this question just looked up the answer without understanding what TCP and UDP are. This is a very possible question to get asked,