Week 1

What is the data unit at L4 of OSI model called?

• Packet

• Segment

• Frame

• Bits

What is a protocol suite?

• group of inter-related protocols necessary to perform Communication

• Contains information for process to process communication

• Identifies sender and receiver

• provides guaranteed delivery of messages

Switches operates in which mode by default?

• duplex

• half-duplex

• full -duplex

• none of the above

In which topology the end devices are connected to a central intermediatory device?

• Star

• Bus

• Mesh

• Tree

Which fiber uses laser technology to send a single ray of light?

• Multi-mode fiber

• Single-mode fiber

• Copper

• None

Which is the security device designed to prevent unauthorized access?

• Router

• Switch

• Firewall

• Modem

Which device connects multiple networks?

• Switch

• Router

• Hub

• Bridge

Number of layers in OSI model

• 5

• 4

• 7

• 6

Which layer describes methods for exchanging data frames between devices over common media?

• L1

• L2

• L3

• L4

What defines a set of rules for exchanging data between devices?

• A model

• A Network

• A Protocol

• none