Network Interview Quastions-1
Network Interview Quastions-1
Q : 1 What are the two types of
transmission technology available?
Ans : (i) Broadcast and (ii)
point-to-point
Q : 2 What is subnet?
Ans : A generic term for
section of a large networks usually separated by a bridge or router.
Q : 3 Difference between the
communication and transmission.
Ans : Transmission is a
physical movement of information and concern issues like bit polarity,
synchronisation, clock etc. Communication means the meaning full exchange of
information between two communication media.
Q: 4 What are the possible
ways of data exchange?
Ans : (i) Simplex (ii)
Half-duplex (iii) Full-duplex. .
Q : 5 What is SAP?
Ans : Series of interface points
that allow other computers to communicate with the other layers of network
protocol stack.
Q : 6 What do you meant by
"triple X" in Networks?
Ans : advertisements The function of PAD
(Packet Assembler Disassembler) is described in a document known as X.3. The
standard protocol has been defined between the terminal and the PAD, called
X.28; another standard protocol exists between hte PAD and the network, called
X.29. Together, these three recommendations are often called "triple
X"
Q : 7 What is frame relay, in which
layer it comes?
Ans : Frame relay is a packet switching
technology. It will operate in the data link layer.
Q : 8 What is terminal emulation, in
which layer it comes?
Ans : Telnet is also called as terminal
emulation. It belongs to application layer.
Q: 9 What is Beaconing?
Ans : The process that allows a network to
self-repair networks problems. The stations on the network notify the other
stations on the ring when they are not receiving the transmissions. Beaconing
is used in Token ring and FDDI networks.
Q : 10 What is redirector?
Ans : Redirector is software that intercepts file or prints I/O requests and translates them into network requests. This comes under presentation layer.
Q: 11 What is NETBIOS and
NETBEUI?
Ans : NETBIOS is a programming interface
that allows I/O requests to be sent to and received from a remote computer and
it hides the networking hardware from applications. NETBEUI is NetBIOS extended
user interface. A transport protocol designed by microsoft and IBM for the use
on small subnets.
Q: 12 What is RAID?
Ans : A method for providing fault
tolerance by using multiple hard disk drives.
Q: 13 What is passive
topology?
Ans : 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. Example for passive topology - linear
bus.
Q: 14 What is Brouter?
Ans : Hybrid devices that combine the
features of both bridges and routers.
No. minimum spanning tree of a graph
give the shortest distance between any 2 specified node Minimal spanning tree
assures that the total weight of the tree is kept at its minimum. But it
doesn’t mean that the distance between any two nodes involved in the
minimum-spanning tree is minimum.
Q: 15 What is cladding?
Ans : A layer of a glass surrounding the
center fiber of glass inside a fiber-optic cable.
Q: 16 What is point-to-point protocol?
Ans : A communications protocol used to
connect computers to remote networking services including Internet service
providers.
Q: 17 How Gateway is different
from Routers?
Ans : A gateway operates at the upper
levels of the OSI model and translates information between two completely
different network architectures or data formats
Q : 18 What is attenuation?
The degeneration of a signal over distance on a network cable is called attenuation.
Q : 19 What is MAC address?
Ans : The address for a device as it is
identified at the Media Access Control (MAC) layer in the network architecture.
MAC address is usually stored in ROM on the network adapter card and is unique.
Q: 20 Difference between bit rate
and baud rate?
Ans : Bit rate is the number of bits
transmitted during one second whereas baud rate refers to the number of signal
units per second that are required to represent those bits. Baud rate = bit
rate / N where N is no-of-bits represented by each signal shift.
Q: 21 what are the types of
Transmission media?
Ans : Signals are usually transmitted over
some transmission media that are broadly classified in to two categories.
a) Guided Media: These are those
that provide a conduit from one device to another that include twisted-pair,
coaxial cable and fiber-optic cable. A signal traveling along any of these
media is directed and is contained by the physical limits of the medium.
Twisted-pair and coaxial cable use metallic that accept and transport signals
in the form of electrical current. Optical fiber is a glass or plastic cable
that accepts and transports signals in the form of light.
b) Unguided Media: This is the
wireless media that transport electromagnetic waves without using a physical
conductor. Signals are broadcast either through air. This is done through radio
communication, satellite communication and cellular telephony