Q. Does a bridge divide a network into smaller segments?

Ans: Bridge is a simple network device that works in the data link layer. Basically, the bridge connects multiple LANs using similar protocols to form a single LAN.

Q. Utilizing RIP, what is the limit when it comes to the number of hops?

Ans: RIP stands for Routing Information Protocol. RIP helps the router to identify the reach of other routers and also provides information related to the distance of networks. The maximum number of hops allowed with RIP is 15. It simply means that the hop count of 0 indicates a network is directly connected to the router while 16 hops indicate the destination is unreachable as 15 is the limit.

Q. How do you configure a Cisco router to route IPX?

Ans: First you need to enable IPX routing. After enabling, RIP and SAP will also be enabled automatically.

#config t
(config)#ipx routing

Q. Why is UDP less favored when compared to TCP?

Ans: The main disadvantage of UDP over TCP is you can’t rely on UDP protocol in terms of reliability. Once you use UDP for message transfer, there is no acknowledgment of transfer message while TCP assures the reach of the message to the destination.

Q. What are some standards supported by the Presentation layer?

Ans: I am listing some standards as mentioned below:

• SSL
• FTP
• SSH
• IMAP

Q. What does the show protocol display?

Ans: show protocols display list of configured protocols. This command displays the global and interface-specific status of any configured Level 3 protocol.

Q. How do you go to privileged mode?

Ans: You may switch to the privileged mode by just use enable keyword:

>enable

Q. What is Bandwidth?

Ans: Bandwidth simply tells about what amount of information your network carries. Use of bandwidth command restricts traffic based on defined BW.

Q. Mention what is the size of IP address?

Ans: IP addresses are 32-bit numbers that contain two primary parts: the network prefix and the host number.  IP addresses are further divided into three different classes: class A, class B, and class C.

00000000 xxxxxxxx xxxxxxxx xxxxxxxx (Class A)
00000000 00000000 xxxxxxxx xxxxxxxx (Class B)
00000000 00000000 00000000 xxxxxxxx (Class C)

Additional Questions

Q. Mention what is BOOTP?

Q. What are the things that can be accessed in a CISCO router’s identifying information?

Q. What causes a triggered update to reset the router hold-down timer?

Q. In configuring a router, what command must be used if you want to delete the configuration data that is stored in the NVRAM?

Q. What are the benefits of IPv6?

Q. Mention what is the difference between the switch, hub, and router?

Q. Mention what is the size of IP address?

Q. Mention what does data packets consist of?

Q. Mention what is DHCP?

Q. Mention what is BOOTP?

Q. Mention what is the matric of EIGRP protocol?

Q. Mention what does the clock rate do?

The post CCNA Advanced Interview Questions first appeared on All About Testing.

Q1. What is the purpose of the Data Link?

Ans: Data Link is the second layer out of seven layers of the OSI model. OSI model stands for Open Systems Interconnection model and it is used as a standard to communicate digital data from source to destination.

For incoming data, the Data Link layer detects and corrects errors in the data stream coming from the physical layer.

For outgoing data, this layer receives data from the network layer and converts it into frames. Later, provide addressing information by adding the header to each frame. It also provides a flow control mechanism and an error control mechanism.

Q2. When does network congestion occur?

Ans: Network Congestion is a term when there is so much data in the network layer that it slows down network response time.

Congestion is the main reason for deteriorating quality in terms of data packet loss and more latency.

Q3. Differentiate full-duplex from half-duplex.

Ans: In simple words, there is two-way communication at the same time in full-duplex communication while in half-duplex communication, two-way communication is there but not simultaneously.

Q4. What is Network latency?

Ans: Latency is a term used to denote the time duration for getting output after providing input. Ideally, network latency should be zero.

Q5. Explain the benefits of VLANs.

Ans: A virtual LAN (VLAN) is a combination of one or more LANs configured so that all the work systems are on the same network virtually.

Benefits:

• If configured correctly, it improves the performance of a network.
• Improves the overall security of the network.

Q6. How does RIP differ from IGRP?

Ans: RIP and IGRP are different routing protocols. RIP stands for Routing Information Protocol while IGRP stands for Interior Gateway Routing Protocol. RIP and IGRP both are distance vector protocols.

RIP takes the best route decision to the network based on the number of hops in order to determine the best route to a network while IGRP takes the best route decision to the network based on bandwidth, reliability, MTU, and hop count.

Q7. What are the different memories used in a CISCO router?

Ans: Here is the list of memories used in the CISCO router:

• ROM (Read Only Memory)
• RAM (Random Access Memory)
• Flash RAM
• NVRAM (Non-Volatile Random Access Memory)

Q8. What is 100BaseFX?

Ans: 100BASE-X also referred to as “Fast Ethernet”. It provides a data transmission speed of 100 Mbps using a baseband.

Q9. What are the advantages of a layered model in the networking industry?

Ans: Here are the advantages of a layered model in the networking industry:

• Promote industry standardization by providing the role of the different layers.
• Network Administrators are able to troubleshoot network problems easily in a layer without affecting the other layers.

Q10. What is HDLC?

Ans: HDLC stands for High-level Data Link Control. It refers to the group of rules and protocols for transmitting data from different network nodes.

Q11. What is Routing?

Ans: Routing is the process of identifying the path for traffic in a network, or between or across multiple networks.

Q12. What is BootP?

Ans: BootP is also called Boot Program. This protocol basically assigns an IP address when the computer is connected to a network and boots its operating system.

Q13. How does cut-through LAN switching work?

Ans: In Cut-Through LAN switching, the router forwards the frame to the next segment as soon as it reads the destination address without waiting for the whole frame.

Q14. What are the different IPX access lists?

Ans: Standard and Extended are the different IPX access lists.

Standard Access List filters network traffic based only on the source or destination IP address.

An Extended Access List filters network traffic based on source and destination IP addresses, ports, sockets, and protocols.

Q15. What’s the simplest way to remotely configure a router?

Ans: Cisco AutoInstall Procedure is available to remotely configure a router. Obviously, you need to connect the internet or LAN to the router.

Q16. How are internetworks created?

Ans: Internetwork is a collection of many different networks to create a large network. Internetworks are created by using routers to connect different networks.

Q17. Give some benefits of LAN switching.

Ans: Here are some benefits of LAN switches:

• Increased network scalability
• less congestion
• low latency
• No single point of failure
• Improved bandwidth performance
• More network connections simultaneously

Q18. Briefly, explain the conversion steps in data encapsulation.

Ans: When a user sends an email or requests a pizza on the website, data is converted into segments. Segments are passed on different OSI layers and converted into packets. Packets are then converted into frames. Frames are also not transmitted via physical cables; instead, it converted into bits before actual transmission.

Q19. Differentiate Logical Topology from Physical Topology.

Ans: Logical Topology is a network that defined how data is transmitted from source to destination irrespective of the physical connection of devices.

Physical Topology is an actual physical interconnection of cables that are laid down for connectivity.

Q20. What is the role of the LLC sublayer?

Ans: The logical link control (LLC) is the upper sublayer of the data link layer of the OSI model. It provides flow control to the Network layer by using different codes. Error correction is another function of this layer.

The post Interview Questions : CCNA | Network Security first appeared on All About Testing.