CCNA Networking Interview Short Questions and Answers - SEO TIPS and TRICKS ~ SEO Tips and Tricks

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Sunday, 23 June 2013

CCNA Networking Interview Short Questions and Answers - SEO TIPS and TRICKS

CCNA Networking Interview Short Questions and Answers - SEO TIPS and TRICKS

1.
What is an ip address ?
An IP address is a numeric identifier assigned to each machine on an IP network. It designates the location of a device on the network.
2.
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.
3.
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.
4.
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.
5.
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.
10BaseT 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.
6.
What are the possible ways of data exchange?
  1. Simplex
  2. Half-duplex
  3. Full-duplex
7.
What is difference between Baseband and Broadband Transmission?
In a baseband transmission, the entire bandwidth of the cable is consumed by a single signal.
In broadband transmission, signals are sent on multiple frequencies, allowing multiple signals to be sent simultaneously.
8.
What is Passive Topology?
When the computers on the network simply listen and receive the signal, they are referred to as passive because they don’t amplify the signal in any way.
9.
How Gateway is different from Routers?
Gateway A device connected to multiple physical TCP/IP networks capable of routing or delivering IP packets between them.
Router, It’s a layer 3 device that connects 2 different networks and routes packets of data from one network to another. It breaks up Broadcast domain as well as Collision Domain.
10.
What is Brouter?
It’s a Hybrid device that combines the features of both bridges and routers.

11.
What is Frame relay, in which layer it comes? ?
Frame relay is an industry standard, shared access, switched Data Link Layer encapsulation that services multiple virtual circuits and protocols between connected mechanism. Frame relay is a packet-switched technology..
12.
What is Beaconing?
An FDDI frame or Token Ring frame that points to serious problem with the ring, such as a broken cable. The beacon frame carries the address of the station thought to be down.
13.
What is ICMP?
It is a Network Layer Internet protocol, which can report errors and status information. We can use the ping command to send ICMP echo request messages and record the receipt of ICMP echo reply messages. With these messages, we can detect network or host communication failures and troubleshoot common TCP/IP connectivity problems.
14.
What is difference between ARP and RARP?
ARP – Address Resolution Protocol The protocol that traces IP addresses to MAC addresses.
RARP – Reverse Address Resolution Protocol The protocol within the TCP/IP stack that maps MAC addresses to IP addresses.
15.
What is the difference between TFTP and FTP application layer protocols?
TFTP – Trivial File Transfer Protocol A stripped down version of FTP, easy to use and fast. TFTP has no Directory browsing, no Authentication and insecure it can only send and receive files.
FTP – File Transfer Protocol The TCP/IP protocol used for transmitting files between network nodes. FTP allows access to both Directories and files, manipulating directories, typing file contents and copying files between hosts.
16.
What is logical link control?
One of two sublayers of the data link layer of OSI reference model, as defined by the IEEE 802 standard. This sublayer is responsible for error detection but not correction, flow control and framing.
17.
What is Virtual Path?
Along any transmission path from a given source to a given destination, a group of virtual circuits can be grouped together into what is called path.
18.
What is the difference between interior and exterior neighbor gateways?
Interior gateways connect LANs of one organization, whereas exterior gateways connect the organization to the outside world.
19.
What is a DNS resource record?
A resource record is an entry in a name server's database. There are several types of resource records used, including name-to-address resolution information. Resource records are maintained as ASCII files.
20.
Which of the three switching methods is fastest, and why?
ICut-Through switching is the fastest method because the switches read only the first six bytes of the frame before forwarding it.

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