Interview Questions.

Question 1. Which Switching Technology Reduces The Size Of A Broadcast Domain?

Answer :

By the use of vlan generation we can reduces the size of Broadcast domain. Vlan (virtual neighborhood vicinity community) is a logical grouping or segmenting the devices below a single broadcast area. As a result presents security and versatility.

Question 2. Which Protocols Are Used To Configure Trunking On A Switch?

Answer :

Vlan trunking protocol (vtp) is a cisco proprietary protocol that propagates the definition of digital neighborhood vicinity networks (vlan) on the complete local place community. To do that, vtp includes vlan information to all of the switches in a vtp area. Vtp Advertisements can be sent over 802.1q, and isl trunks.

LAN Interview Questions
Question three. What Is Svi?

Answer :

A switched virtual interface (SVI) is a vlan of transfer ports represented by means of one interface to a routing or bridging system. There is not any physical interface for the vlan and the SVI offers the layer 3 processing for packets from all transfer ports associated with the vlan.

Question four. What Is Meant By “router On Stick”?

Answer :

Router-on-a-stick is a term often used to explain a setup up that consists of a router and switch related the usage of one Ethernet link configured as an 802.1q trunk hyperlink. In this setup, the transfer is configured with more than one vlans and the router performs all routing among the one-of-a-kind networks/vlan.

Question five. Which Are The Two Trunking Protocols?

Answer :

There are two fundamental sorts of Encapsulation Trunking protocols.

ISL (inter transfer link) which is cisco proprietary protocol.
802.1q which is an IEEE fashionable.
Wireline Broadband Interview Questions
Question 6. Which Protocol Encapsulates Ethernet Frames?

Answer :

ISL encapsulates Ethernet frames while 802.1q tags Ethernet body.

Question 7. Which Is The Vlan Not Tagged By 802.1q?

Answer :

Native vlan

Network Administrator Interview Questions
Question eight. How To Delete Vlan Information From Switch?

Answer :

Delete flash:vlan.Dat

Question 9. What Is Difference Between Vlan Access And Trunk Mode?

Answer :

Access mode is used to connect give up devices (host) to switches whilst trunk mode is used to connect between switches.

LanDesk Interview Questions
Question 10. What Is Difference Between Dynamic Auto And Dynamic Desirable?

Answer :

Dynamic Desirable: attempts to barter a trunk with the opposite quit.

Dynamic Auto: paperwork a trunk most effective if requested via the opposite quit.

Question eleven. What Is The Use Of None Negotiate Command In Switch?

Answer :

None negotiate command disables automatic formation of trunk links. It might be desirable to configure trunk manually and provide none-negotiate command for protection purpose.

PRTG Interview Questions
Question 12. Explain Different Switch Port Modes?

Answer :

Trunk: bureaucracy an unconditional trunk.
Dynamic Desirable: Attempts to barter a trunk with the far end.
Dynamic Auto: Forms a trunk most effective if asked by the a long way stop.
Access: It will in no way shape a trunk.
LAN Interview Questions
Question thirteen. What Is Dtp?

Answer :

Dynamic Trunking protocol is used to mechanically establish trunks among succesful ports (insecure method).

Question 14. Which Is The Command Used To See Trunk Interfaces?

Answer :

Show interface trunk.

Show interface fa1/zero/thirteen trunk.

Show interface fa1/zero/thirteen transfer port.

Show interface popularity encompass trunk.

Question 15. What Are Frame Tagging And Different Types Of Frame Tagging?

Answer :

Vlan frame tagging is a technology that is used to discover the vlan that the packet belongs to. The vlan body tag is placed on the Ethernet frame while the Ethernet frame reaches a transfer from an access port, which is a member of vlan.

Wireless Sensor Networks Interview Questions
Question 16. What Is The Maximum Number Of Vlans Permitted In 802.1q And Isl?

Answer :

Maximum vlan approved in 802.1q is 4094.

Maximum vlan permitted in ISL is one thousand.

Question 17. What Is The Difference Between An Access Port And A Trunk Port?

Answer :

A trunk does upload dot1q or ISL tags directly to frames and may exist on all or more than one vlans. While an get admission to port simplest passes visitors from a fixed vlan however does not modify the body with a vlan tag.

Question 18. What Is A Native Vlan And What Type Of Traffic Will Go Through Native Vlan?

Answer :

The local vlan is the simplest vlan which isn't tagged in a trunk, in other words, native vlan frames are transmitted unchanged. Per default the local vlan is vlan 1 but you can alternate that:

#show interface fa0/eight trunk.

#Port mode encapsulation status local vlan

Wireline Broadband Interview Questions
Question 19. What Is Inter-vlan Routing?

Answer :

Virtual LAN (vlans) divides one physical network into multiple broadcast domain names. But, vlan-enabled switches cannot, by themselves, forward visitors across vlans limitations. So you need to have routing between those vlans which is known as inter vlan routing.