Computer Networks (I.T)
This test contains some questions based on basic concepts of computer networks.
Questions
Which layer of OSI network model provides end to end connectivity from host to host?
- Network layer
- Transport layer
- Session layer
- Application layer
- Data link layer
The magnitude of a voltage waveform is known as
- amplitude
- attenuation
- ALOHA
- angle modulation
- bandwidth
What do we call the method of simultaneously transmitting data to a number of stations?
- Multicast
- Unicast
- Broadcast
- Anycast
- Geocast
Which of the following methods is used to achieve error detection in data link layer?
- Cyclic redundancy check
- Bit stuffing
- Hamming codes
- Character stuffing
- Burst error correction
Which mode of communication supports transfer of data in both directions at the same time?
- Half duplex
- Simplex
- Parallel transmission
- Full duplex
- Serial transmission
Which protocol can be used for transferring electronic mail messages from one machine to another?
- FTP
- SNMP
- SMTP
- SGMP
- RPC
In which network is the central computer surrounded by one or more satellite computers?
- Star network
- Bus network
- Ring network
- Mesh network
- Tree network
Which of the following is true about physical layer of the OSI model?
- Controls error detection and correction
- Constructs packet of data and sends them across the network
- Defines the electrical characterstics of the signals passed between the computer and communication devices
- Responsible for dialogue control and token management
- Encryption and decryption
Which communication mode supports two way traffic, but in only one direction at a time?
- Simplex mode
- Half duplex mode
- Full duplex mode
- Coaxial cable
- Router
Which layer of OSI network model delivers error-free data?
- Transport layer
- Application layer
- Network layer
- Session layer
- Physical layer
Which layer of OSI model makes use of bridges?
- Network layer
- Application layer
- Physical layer
- Data link layer
- Session layer
In OSI model, which of the following layers is responsible for dialogue control and token management?
- Session layer
- Physical layer
- Data link layer
- Presentation layer
- Network layer
________ is a medium access control technique for multiple access transmission media.
- Bridge
- Bandwidth
- Attenuation
- Angle modulation
- Aloha
Creating and recognising frame boundaries is the responsibility of
- data Link layer
- presentation layer
- application layer
- transport layer
- network layer
_______ is used for linking two homogenous packet broadcast local networks.
- Bridge
- Hub
- Repeater
- Gateway
- Modem