Quiz 1 — Models, Packets, and Local Delivery

Seven questions covering OSI, frames, IP addressing, gateways, ARP, switching, and routing.

Quiz results are saved to your browser's local storage and will persist between sessions.

Reset quiz

#

Which description best matches the OSI model?

A routing protocol used by internet service providers

A seven-layer conceptual model for separating networking responsibilities

A four-step process for obtaining an IP address

A cloud-specific model for VPC design

The OSI model is a conceptual seven-layer framework. The practical internet protocol suite is commonly described with the four-layer TCP/IP model.

#

What is a frame?

An application request before transport encapsulation

A route selected by a router

A Layer 2 unit containing local-link addressing and an encapsulated packet

A DNS response containing several records

Ethernet carries frames on a local link. The frame normally contains an IP packet as its payload.

#

What is the primary purpose of an IP address?

To identify an application process on a host

To provide a logical address for an interface within an IP network

To identify a switch port permanently

To encrypt traffic between two routers

IP addresses support logical addressing and routing. Ports identify application endpoints, while MAC addresses support local Layer 2 delivery.

#

A host wants to send traffic to an address outside its subnet. Which local device does it send the frame to?

The authoritative DNS server

The DHCP server

Its default gateway

The destination host's switch port

The host sends remote traffic to its default gateway. ARP is used to resolve the gateway's local MAC address—not the remote destination's MAC address.

#

What does ARP resolve on an IPv4 LAN?

A hostname to an IP address

A local IPv4 address to a MAC address

A port number to an application

A public address to a private address

ARP operates within a local broadcast domain and does not cross routers.

#

How does an Ethernet switch normally decide where to forward a frame?

By looking up the destination IP in a routing table

By querying DNS for the destination hostname

By looking up the destination MAC address in its MAC table

By translating the source address with NAT

A Layer 2 switch learns source MAC addresses and forwards frames using its MAC address table.

#

What is the main job of a router?

Assign application ports to processes

Resolve local IPv4 addresses to MAC addresses

Forward packets between networks using destination IP routes

Encrypt every packet crossing a switch

Routers make Layer 3 forwarding decisions and separate broadcast domains.

Quiz Progress

0 / 0 questions answered (0%)

0 correct

Quiz Complete!

0%

Reset quiz

Quiz home · Next: Addressing and routing

Quiz Progress

• Answered: 0 / 0 (0%)
• Correct: 0 / 0 (0%) Reset