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PDF Cisco Network Administration Interview Questions: CISCO CCNA Certification Review

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The Interfaces are fixed configurations that refer to the router ports. Logical Topology refers to the signal path through the physical topology. Physical Topology is the actual layout of the network medium. This may happen when the hold-down timer has already expired, or when the router received a processing task that incidentally was proportional to the number of links in the internetwork. The highest IP address of any physical interface. The lowest IP address of any logical interface.

The middle IP address of any logical interface. The lowest IP address of any physical interface. The highest IP address of any interface. The highest IP address of any logical interface. The lowest IP address of any interface. It also has the numeric identification number that defines the packet number and order. When data is sent across the network, that information is segmented into data packets.

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In short, data packets carry the information and routing configuration for your transferred message. You can also make static IPS for machines like printers, servers, routers, and scanners.


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It is because UDP is un-sequenced and unreliable. It is not capable of creating virtual circuits and acknowledgments. It is availed on a router to share routes with other routers within the same autonomous system. Unlike other routers like RIP, EIGRP only sends incremental updates, decreasing the workload on the router and the amount of data that needs to be transferred.

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Mention what command you must use if you want to delete or remove the configuration data that is stored in the NVRAM? Erase startup- coding is the command you must use if you want to delete the configuration data that is stored in the NVRAM. Explain the difference between half-duplex and full-duplex? Full duplex means that the communication can occur in both directions at the same time, while half-duplex means that the communication can happen in one direction at a time.

Route poisoning is a technique of preventing a network from transmitting packets through a route that has become invalid. In the case of RIP table entry, 16 hops will be assigned to dead or invalid route making it unreachable. Your email address will not be published. In the absence of loopback, router id is highest physical interface ip address but if loopback is present than it is highest loopback ip address before all this depending upon the priority, router id is selected.

First of all we can set manaul router-id if manual is not set then it check for loopback address if loopback address is not configure then it check the physical interface ip and in loopback and interface ip configured it accept the highest one. Latest Articles You are here: Please wait while the activity loads. If this activity does not load, try refreshing your browser.

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Cisco Network Administration Interview Questions: CISCO CCNA Certification Review

Feel Free to add additional fields for the Quiz Taker to complete using the "Add Fields" options to the right. The number of correct answers. The total number of questions. Number of wrong answers.

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Time allowed Requires timer add on. Time used Requires timer add on. Your answers are highlighted below. The configuration file that is being executed. Allows Half duplex data transmission and reception. Allows Full duplex data transmission and reception. In configuring a router, what command must be used if you want to delete the configuration data that is stored in the NVRAM?

When configuring a router utilizing both physical and logical interfaces, what factor must be considered in determining the OSPF router ID? Once you are finished, click the button below. Any items you have not completed will be marked incorrect. You have not finished your quiz. If you leave this page, your progress will be lost. No, this is correct Reply. Whatever the connection, layer 1 is always physical layer Reply. Static IP addresses are reserved and do not change with time.

Subnets are used in IP network to optimise the performance of a network because it reduces traffic by breaking a large network into smaller networks. MTU stand for maximum transmission unit. The default MTU size is bytes. The above questions will give you an idea on how to prepare for a CCNA interview. The number of CCNA certified professionals are growing in the IT industry and you need to have all the terminologies, techniques and best practices on your fingertips in order to be successful in a job interview. If you are not a CCNA certified professional, you can get one by enrolling in a course that will help you in your preparation for the examination.

Naukri Learning offers a comprehensive range of such courses to help you get certified for and be an expert in the field. Hasibuddin Ahmed Hasib is a professional writer associated with learning. He has written a number of articles related to technology, marketing, and career on various blogs and websites.


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As an amateur career guru, he often imparts nuggets of knowledge related to leadership and motivation. He is also an avid reader and passionate about the beautiful game of football. It is an interface ID, which is typically composed of mac addresses. Global unicast addresses are IPv6 public addresses, which can be used globally as public addresses and are unique in nature; e.

IPv4 address is 32 bit address and IPv6 is bit address. In IPv6 many millions of addresses are there, it has 3. There are three types of ACL:. Frame relay is a packet switching technology, it is used to join two or more routers with a single interface. It is cheaper in cost and belongs to ISP. LMI Local Management Interface is a signaling standard that is used between the routers and frame relay switches. CHAP- challenge message passes and replies with username and password so no other router can come inside. Router - Each port has one separate collision domain and one separate broadcast domain.

Switch - Each port has one separate collision domain but all ports have one single broadcast domain. For example sending datas to some 5 machines instead of all 10 Machines. XXXX series where Syslog server is a popular server used to store log information- port no: It can be configured easily. It can store a large volume of data. It can also be sent to Syslog. It is implemented mostly while using Syslog on the networks. MIB Management Information Base , database object that describes the information in a predetermined format; that the agent can use to populate the data.

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It is an open standard routing protocol that has been implemented by a wide range of network vendors, including Cisco. It supports multi vendors like Cisco, Alcatel, Juniper, 3Com routers. BPDU Guard is used to protect the integrity of switch ports that have portfast enabled. By default, BPDU guard is disabled; it is mainly used to shut the port in an error condition. EtherChannels can be negotiated between two switches to provide some dynamic link configuration. Learn more about Top 10 Networking Stories Of HSRP is a redundancy protocol developed by Cisco to provide gateway redundancy without any additional configuration on the end devices in the subnet.

These hello messages are forwarded to multicast address It is used to find which routing protocol is trusted. We can have any number of routing protocols. Each of them can have different paths, values ranging from 0 to It uses virtual links to connect IPv6 localities together within a site that is primarily using IPv4. CCNA acts as a stepping stone for entry into the networking domain, especially if you want to work with Cisco products. It enhances your networking knowledge to a great level.

It not only helps freshers in getting a job, but a CCNA certification also helps an experienced professional to earn a promotion. Many technologies have come and gone; but, networking domain is evergreen and gives one a good chance to obtain a job in the software field. Finally, to conclude, apart from imparting knowledge; CCNA helps in getting quality jobs and career growth and also adds to a sense of self satisfaction. Go opt for CCNA to achieve your dream career of working in a reputed company and earning a handsome salary.

This site uses cookies. By continuing to browse the site, you are agreeing to our use of cookies and to our privacy policy. Don't have an account? Already have an account? Sundara Pandian 11 JUN Sample logos of various Cisco Certifications Image Source: Major topics covered in CCNA: It is a set of rules used to describe how to make networks.

Whenever we design new network or hardware device, we have to follow OSI reference model. It deals only with packets data with IP address B Packet filtering- router sends and receives only packets.