Q-1 which layer of the OSI model is responsible for reliable connections?
Answer: The Transport layer of the OSI model is responsible for reliable connections.
Q-2 what is the difference between acknowledgments and handshaking?
Answer: Handshaking is used to negotiate the properties of a connection that is being established. Acknowledgments
are used to tell the sender that data has been successfully received by the destination during the use of a connection.
Q-3 How many VTP modes are there and what are they?
Answer: Three: Server, Client, and Transparent
Q-4 what are the two types of Trunk encapsulation protocols?
Answer: IEEE 802.1Q and Cisco's ISL
Q-5 what are the four primary no routable protocols?
Answer: SNA, NetBIOS, DEC LAT, DEC MOP
Q- 6 What is the difference between TCP and UDP?
Answer: The primary difference between TCP and UDP is that TCP is a connection oriented protocol and UDP is a connectionless protocol.
Q- 7 What is HSRP?
Answer: HSRP, or the Hot Standby Routing Protocol, is a Cisco proprietary protocol that brings routing functionality to end devices that would otherwise not be capable of taking advantage of redundant network connections. HSRP enables a pair of Cisco routers to work together to present the appearance of a single virtual default-gateway to end devices on a LAN segment.
Q- 8 What is the difference between a Public IP address and a Private IP address?
A: Public address space is a unique address that is assigned to a company. Private address space is not recognized by the Internet and can be used by anyone within their private network
Q- 9 What does AAA stand for?
Answer: Authentication, authorization, and accounting
Q- 10 The H.323 protocol is used for what?
Answer: H.323 is used for multiservice (multimedia) applications, usually in a Voice Over IP environment.
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