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- What are the four different Ethernet encapsulation types?
Answer: From the Cisco IPX encapsulation command they are ARPA, NOVEL-ETHER, SAP and SNAP
- What are the three main tasks of a transparent bridge?
Answer: Learning, Forwarding, Filtering
- What type of routing protocol is EIGRP?
Answer: Hybrid
- While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows “request times out.” At which OSI layer is this problem associated with?
Answer: The Network Layer
- 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.
- What is a stub area?
Answer: A stub area is an area that does not accept routing updates from outside its autonomous system.
- 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.
- What is the primary purpose of a LAN?
Answer: The primary purpose of a local-area network is to allow resource sharing. The resources may be devices, applications, or information. Examples of shared resources are files, databases, e-mail, modems, and printers.
- What is a protocol?
Answer: A protocol is an agreed-upon set of rules. In data communications, the rules usually govern a
procedure or a format.
- What is the purpose of a MAC protocol?
Answer: A Media Access Control protocol defines how a given LAN medium is shared, how LAN devices
connected to the medium are identified, and how frames transmitted onto the medium are
- What is a frame?
Answer: A frame is a digital “envelope” that provides the information necessary for the delivery of data across a data link. Typical components of a frame are identifiers (addresses) of the source and destination devices on the data link, an indicator of the type of data enclosed in the frame, anderor-checking information.
- What feature is common to all frame types?
Answer: A feature common to all frame types is a format for identifying devices on the data link.
- What is a MAC address or MAC identifier?
Answer: A Media Access Control address or identifier is a means by which individual devices connected to a data link are uniquely identified for the purpose of delivering data.
- Why is a MAC address not a true address?
Answer: An address specifies a location. A MAC address is not a true address because it is permanently associated with the interface of a specific device and moves whenever the device moves. A MAC identifies the device, not the location of the device.
- What are the three sources of signal degradation on a data link?
Answer: The three sources of signal degradation on a data link are attenuation, interference, and distortion. Attenuation is a function of the resistance of the medium. Interference is a function of noise entering the medium. Distortion is a function of the reactive characteristics of the medium, which react differently to different frequency components of the signal.
Here in this blog last time we have presented the CCNA interview Questions part-1
CCNA interview Questions part-3
CCNA interview Questions part-3
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