Here you can find CCNA Interview Questions and Answers.
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What is difference between Switch & Hub?
Switch: Switches operate at Layer 2 Data Link Layer Address Learning Forward / Filter decision using MAC address Loop Avoidance Breakup collision domains Switches create separate collision domains but a single broadcast domain Hub: Hub operates at Layer 1 Physical Layer No Filtering No Addressing Hub creates single collision domain and single broadcast domain Make forwarding to all the ports when signal is arrived
What is PING utility?
PING – Packet Internet Gopher A utility that verifies connections to one or more remote hosts. The ping command uses the ICMP echo request and echo reply packets to determine whether a particular IP system on a network is functional. Ping is useful for diagnosing IP network or router failures.
What is a VLAN? What does VLAN provide?
VLAN – Virtual Local Area Network Vlan is a logical grouping or segmenting a network connected to administratively defined ports on a switch, they provide Broadcast control, Security and Flexibility.
What is Subnetting? Why is it used?
Used in IP Networks to break up larger networks into smaller subnetworks. It is used to reduce network traffic, Optimized network performance, and simplify management i.e. to identify and isolate network problems.
Difference between the Communication and Transmission?
Communication is the process of sending and receiving data by means of a data cable that is connected externally. Transmission means the transfer of data from the source to the destination.
What is RAID in ccna?
A method used to standardize and categorize fault-tolerant disk systems. RAID levels provide various mixes of performance, reliability, and cost. Some servers provide three of the RAID levels: Level 0 (striping), Level 1 (mirroring), and Level 5 (striping & parity).
What are 10Base2, 10Base5 and 10BaseT Ethernet LANs?
10Base2 an Ethernet term meaning a maximum transfer rate of 10 Megabits per second that uses baseband signaling, with a contiguous cable segment length of 200 meters (185mts). Known as Thinnet. 10Base5 an Ethernet term meaning a maximum transfer rate of 10 Megabits per second that uses baseband signaling, with a contiguous cable segment length of 500 meters. Known as Thicknet. an Ethernet term meaning a maximum transfer rate of 10 Megabits per second that uses two pairs of twisted-pair baseband signaling, with a contiguous cable segment length of 100 meters.
What are the two types of Transmission Technology available in ccna?
Two types of Transmission Technology available in ccna are Point – to – Point and Broadcast
What is point-to-point protocol in ccna?
An industry standard suite of protocols for the use of point-to-point links to transport multiprotocol datagrams.
What are the possible ways of data exchange in ccna?
Possible ways of data exchange in ccna are Simplex Half-duplex Full-duplex