OBJ 1

Question 1

OBJ 1.1

Layer 1

Answer 1

Physical

Cables, bits, voltages, network cards, Hub & Repeater

Question 2

OBJ 1.1

Layer 2

Answer 2

Data Link

MAC addressing, switches, frames, error detection, Qos & Bridge

Question 3

OBJ 1.1

Layer 3

Answer 3

Network

Routing, IP addressing, Firewall, Router

Question 4

OBJ 1.1

Layer 4

Answer 4

Transport

End-to-end connections, reliability (TCP/UDP)

Question 5

OBJ 1.1

Layer 5

Answer 5

Session

Manages sessions (start/stop conversations)

Question 6

OBJ 1.1

Layer 6

Answer 6

Presentation

Data format (encryption, compression, encoding)

Question 7

OBJ 1.1

Layer 7

Answer 7

Application

User interface, APIs, app access to network services

Question 8

OBJ 1.5

DOCSIS

Answer 8

Standard to make use of existing cable infrastructure to provide high speed internet

Question 9

OBJ 1.5

MTRJ

Answer 9

Combines both transmit and receive fibers into a single ferrule, very compact

Question 10

OBJ 1.6

Ring

Answer 10

Devices are connected in a circle - one connection breaks, the whole network can get disrupted

Question 11

OBJ 1.6

Mesh

Answer 11

Every device is connected to every other device- high redundancy and fault tolerance

Question 12

OBJ 1.6

Bus

Answer 12

single backbone cable connecting all devices- single point of failure

Question 13

OBJ 1.6

Star

Answer 13

central hub - less resilient to hub failure

Question 14

OBJ 1.6

Spine and Leaf

Answer 14

Optimal scalability and performance for large-scale data centers

Question 15

OBJ 1.8

EUI - 64(Extended Unique Identifier)

Answer 15

Automatically configure IPv6 host addresses
An IPv6 device will use the MAC address of its interface to generate a unique 64-bit interface ID.

Question 16

OBJ 1.8

Virtual Extensible Local Area Network (VXLAN)

Answer 16

Address scalability limitations of traditional Vlans by extending Vlan space to accommodate over 16 mill unique identifiers.