Computer Network Laboratory

Point to point communication not usually practical, since

• Devices are too close and small set of devices would need less number of connections

• Devices are too far apart and small set of devices would need impractical number of connections

• Devices are too far apart and large set of devices would need impractical number of connections

• Devices are too close and large set of devices would need impractical number of connections

In computer information systems , data are represented by

• Ternary information units

• Decimal information units

• Binary information units

• Hexadecimal information units

Network- Criteria to be met

• Performance, Reliability and Security

• Characteristics, Reliability and Security

• Performance, Authenticity and Security

• Performance, Reliability and throughput

The key elements of protocol are;

• Syntax, Layers and Timing

• Syntax, Semantics and Timing

• Agility, Semantics and Timing

• Syntax, Semantics and Frames

If a sender produces data at 100 Mbps and the receiver processes data at 1 Mbps,

• The transmission will overload the receiver and data will be largely lost.

• The transmission will overload the receiver and data will not be largely lost.

• The transmission will overload the transmitter and data will be largely lost.

• The transmission will overload the transmitter and data will not be largely lost.

The protocol that is used to send and receive file from a remote host

• PPP

• FTP

• TCP

• UDP

The protocol that is used for Internet to send document that is encoded in HTML

• SMTP

• FTP

• HTTP

• TCP

The protocol that is used to send Email over a network

• FTP

• SMTP

• HTTP

• TCP

Network topologies are;

• Mesh, Star, Tree, Bus and Ellipse

• Mesh, Star, Tree, Ethernet and Ring

• Mesh, Star, Tree, Bus and Ring

• Mesh, Star, Wi-Fi, Bus and Ring

Consider a network with 5 nodes in a mesh topology, estimate the number of links required.

• 1.0 links

• 10.0 links

• 20.0 links

• 2.0 links