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WAN Network Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM NETWORKING INTERVIEW QUESTIONS WAN NETWORK INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

WAN Network Interview Questions & Answers - Learning Mode

WAN Network is a computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs). Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites. A wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance. Wide area networks are often established with leased telecommunication circuits.

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WAN Network Interview Questions & Answers - Learning Mode
Try WAN Network Interview Questions & Answers - Exam Mode
Question: Why should we care about the OSI Reference Model ?
What is the main purpose for creating this OSI model?
Why it is a layered model?


Answer: Why should we care about the OSI Reference Model
What is the main purpose for creating this osi model
why it is a layered model


Why should we care about the OSI Reference Model
What is the main purpose for creating this osi model
why it is a layered model Source: CoolInterview.com
Question: What is Session Initiation Protocol (SIP)? How does it work?

Answer: SIP is meant for Session Initiation Protocol. It works in application layer. It specially used for initiating, modifying and terminating a session. you can find all details in rfc3261. Source: CoolInterview.com
Question: What is MAC address?

Answer: The address for a device as it is identified at the Media Access Control (MAC) layer in the network architecture. MAC address is usually stored in ROM on the network adapter card and is unique. Source: CoolInterview.com
Question:
If you are given the IP address can u tell how many computers can be connected?What do you look at?


Answer: Normally in IP address in fourth tab usually they will give the serial number of the using computer. in that case we can say how many computers are there. if not its impossiable to say.

The answer is yes.
This all depends on the type of IP address.That is the class it belongs to.All that is needed to be done is to subnet the given IP adress. Source: CoolInterview.com
Question: What is region?

Answer: When hierarchical routing is used, the routers are divided into what we call regions, with each router knowing all the details about how to route packets to destinations within its own region, but knowing nothing about the internal structure of other regions.

when hierarchical routing is used,the routers are divided into what we call regions,with each router knowing all the details about how to route packets to destinations within its own region,but knowing nothing about the internal stru Source: CoolInterview.com
Question: What is wide-mouth frog?

Answer: Wide-mouth frog is the simplest known key distribution center (KDC) authentication protocol.

When hierarchical routing is used, the routers are divided into what we call regions, with each router knowing all the details about how to route packets to destinations within its own region, but knowing nothing about the internal structure of other regions.
Source: CoolInterview.com
Question: What is wide area networks?

Answer: Wide Area Network (WAN) is a computer network that covers a broad area (i.e., any network whose communications links cross metropolitan, regional, or national boundaries Source: CoolInterview.com
Question: What is Media Access Control (MAC) address?

Answer: The address for a device as it is identified at the Media Access Control (MAC) layer in the network architecture. MAC address is usually stored in ROM on the network adapter card and is unique.

MAC (Media Access Control) address is a unique address of a device and stored in ROM on the network adapter card. it is 48 bit long. Source: CoolInterview.com
Question: What is Wide Area Network (WAN)?

Answer: Wide Area Network (WAN) is a computer network that covers a broad area (i.e., any network whose communications links cross metropolitan, regional, or national boundaries.

WAN-Wide Area Network. Many MANS are joined to form a WAN. It carry voice,data &speech efficiently through very long distances, may be through out the country. The most Common & readily understandable example is INTERNET . Source: CoolInterview.com
Question: Explain What is wide-mouth Frog Protocol?

Answer: Wide-mouth frog is the simplest known key distribution center (KDC) authentication protocol.

When hierarchical routing is used, the routers are divided into what we call regions, with each router knowing all the details about how to route packets to destinations within its own region, but knowing nothing about the internal structure of other regions. Source: CoolInterview.com
Question: What is a difference between switch and Hub?

Answer: HUb: limiteded port compare to switch.less speed compare to switch because

more collision.

Switch: To Avoid collision we use switch. In switch Each Port having own collision Domain.

HUB:Hub is a layer-1 device,in this data transmission in the form of bits.

SWITCH:Switch is a layer-2 device,in this data transmission in the form of frames.
Source: CoolInterview.com
Question: Difference between the communication and transmission?

Answer: Transmission is a physical movement of information and concern issues like bit polarity, synchronisation, clock etc.

Communication means the meaning full exchange of information between two communication media.

Transmission is a one way scheme while communication is two-way scheme Source: CoolInterview.com
Question: What are the types of Transmission media?

Answer: Signals are usually transmitted over some transmission media that are broadly classified in to two categories:-

Guided Media:
These are those that provide a conduit from one device to another that include twisted-pair, coaxial cable and fiber-optic cable. A signal traveling along any of these media is directed and is contained by the physical limits of the medium. Twisted-pair and coaxial cable use metallic that accept and transport signals in the form of electrical current. Optical fi Source: CoolInterview.com
Question: What is SIP? how does it work? what are the alternatives if any? current and future practice and application standards? references(books,urls,rfcs etc)

Answer: SIP is meant for Session Initiation Protocol. It works in application layer. It specially used for initiating, modifying and terminating a session. you can find all details in rfc3261.
Source: CoolInterview.com
Question: What is a VLAN?What does VLAN provide?

Answer: A technology called VLAN (Virtual LAN broadcast domains logically segmented on an Ethernet switch) trunking that was once primarily the domain of network switches has now trickled down to the rest of the Data Center to address these issues. Now it is possible for these multi-homing devices to be multi-homing in function without the need for multiple physical network adapters and the additional infrastructure associated with them. VLAN trunking allows a single network adapter to behave as ?n? num Source: CoolInterview.com
Question: What is a VLAN and what does VLAN provide?

Answer: VLAN is a technology by which we can administratively assign different ports of the same layer2 switch to different subnetworks. This is particularly useful when different departments of a company have offices in different floors of the same office. The different departments can be connected via a layer2 switch , which is having configuration for other subnetwork also. So practically the same switch acts as if it is more than one. Packets destined for the specific subnetwork are forwarded to tho Source: CoolInterview.com

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