Which layer of the OSI model is responsible for identifying the network's physical characteristics?

• Application Layer

• Presentation Layer

• Physical Layer

• Data Link Layer

Answer explanation

The Physical Layer of the OSI model is responsible for identifying the network's physical characteristics.

What is the primary function of the Physical Layer (Layer 1) in the OSI model?

• Managing data encryption and decryption

• Handling the physical connection between devices

• Establishing, managing, and terminating sessions

• Routing data packets across networks

Answer explanation

The primary function of the Physical Layer (Layer 1) in the OSI model is handling the physical connection between devices.

Which mnemonic can help you remember the OSI layers from top to bottom?

• All People Seem To Need Data Processing

• All People Should Try New Data Protocols

• All People Seem To Need Digital Processing

• All People Should Try New Digital Protocols

Answer explanation

The mnemonic 'All People Seem To Need Data Processing' can help remember the OSI layers from top to bottom.

In the OSI model, which layer is referred to as Layer 3?

• Application Layer

• Network Layer

• Data Link Layer

• Transport Layer

Answer explanation

In the OSI model, Layer 3 is referred to as the Network Layer, responsible for routing and forwarding data packets between different networks.

Which layer of the OSI model is responsible for identifying the topology to be used in the network?

• Data Link Layer

• Network Layer

• Physical Layer

• Transport Layer

Answer explanation

The Physical Layer of the OSI model is responsible for identifying the network's topology, focusing on the physical aspects of the network such as cables, connectors, and hardware devices.

Which of the following is NOT a common topology mentioned in the text?

• Ring

• Mesh

• Tree

• Star

Answer explanation

The correct choice is 'Tree' because it is NOT a common topology mentioned in the text, while Ring, Mesh, and Star are common topologies discussed.

Which protocols and technologies operate at the physical layer?

• USB, Ethernet, DSL, ISDN

• HDLC, L2TP, PPP

• TCP, UDP, IP

• HTTP, FTP, SMTP

Answer explanation

The protocols and technologies that operate at the physical layer include USB, Ethernet, DSL, and ISDN.

What does the data link layer use to describe the logical grouping of data?

• Packet

• Frame

• Segment

• Bit

Answer explanation

The data link layer uses 'Frame' to describe the logical grouping of data.

Which sublayer of the data link layer is responsible for the physical or hardware address burned into each NIC?

• Logical Link Control (LLC) layer

• Media Access Control (MAC) layer

• Network Control layer

• Transport Control layer

Answer explanation

The Media Access Control (MAC) layer is responsible for the physical or hardware address burned into each NIC.

Which IEEE standard specifies the MAC layer?

• IEEE 802.1

• IEEE 802.2

• IEEE 802.3

• IEEE 802.11

Answer explanation

The IEEE standard that specifies the MAC layer is IEEE 802.1, making it the correct choice.