Ccent, Ccna, Ccnp, Ccie Interview Questions

Ccent, Ccna, Ccnp, Ccie Interview Questions
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.

10 Ccent, Ccna, Ccnp Interview Questions

10 Ccent, Ccna, Ccnp Interview Questions
Q-1 What type of routing protocol maintains neighbors?
Answer- Link State
Q-2 what is the range of values for administrative distance?
Answer: 0-255
Q-3 Describe the difference between unicast, multicast, and broadcast traffic?
Answer: Unicast traffic flows from a single source to a single destination MAC address. Multicast traffic flows from a single source MAC address to many destinations and uses a functional MAC address. Broadcast traffic is from a single source to all devices on the Ethernet segment. This is specified by a destination MAC address of all ones.
Q-4 What are the four different Ethernet encapsulation types?
Answer: From the Cisco IPX encapsulation command they are ARPA, NOVELL-ETHER, SAP and SNAP
Q-5 What are the three main tasks of a transparent bridge?
Answer: Learning, Forwarding, Filtering
Q-6 What type of routing protocol is EIGRP?
Answer: Hybrid
Q-7 What is the range of values for administrative distance?
Answer: 0-255
Q-8 What algorithm does OSPF use to compute its route table?
Answer: OSPF uses the shortest path first (SPF) algorithm, which is also known as the Dijkstra algorithm.
Q-9 What is a stub area?
Answer: A stub area is an area that does not accept routing updates from outside its autonomous system.
Q-10 What does the TTL field of an IP packet header do?
Answer: The TTL field indicates the maximum time that a packet can be on the network. Each router that processes this packet decrements the TTL value by 1. If the value reaches zero, the packet is discarded from the network. The purpose of this field is to eliminate the possibility of a packet endlessly traversing the network.

Why People Should Get Network+, Ccna, Ccnp or Ccie Network Based Certifications

Why People Should Get Network+, Ccna, Ccnp or Ccie Network Based Certifications
As the world is running so fast the integrity of IT certification is very important to everyone. IT, as an industry and a profession, is largely growing with immense speed.

Certifications cannot be achieved before passing some particular standards. Certifications are required to make oneself more practical or experience. The qualifications a person must have in order to earn a certification are a combination of hands-on experience, skills and subject matter knowledge. Such qualifications can vary widely from one certification candidate to another and they are difficult to assess accurately. In an ideal world, a certifying agency would use a practical hands-on methodology to test an individual's knowledge and skills. Because this is cost prohibitive and logistically challenging in most cases, agencies use standardized examinations to assess candidates' qualifications. When the legitimacy of the test process is compromised for example, when people can openly find the exams posted word for word on the Internet the value of certification is diminished. If certification were to ever completely lose its value, the IT profession in general would suffer.

So networking based certification is a basic need now days for becoming a network engineer. Networking has always been a priority job. Installation of a LAN, WAN and internet Connectivity with changing architectures that brought about file server, printer server has highlighted the need of networking professionals. Networking certifications from CompTIA, Cisco, Microsoft, Novell and other companies have sought to bring professionalism into the installation and configuration of their products. Security has become an important part of networking and network security certifications have also become incorporated into the network certifications. Certification gives better pay but look at your ability to complete the learning to get the certification. You may be spending more and may not even get certified. Certification holders must actually perform to be an asset to the company. This increases his credential.