Mastering Network Interface Cards (NICs)

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Which layer of the OSI model is responsible for assigning IP addresses?

Transport layer

Network layer (correct)

Data link layer

Physical layer

What is the purpose of an ARP request message?

To request the IP address of a router

To request the IP address associated with a MAC address

To request the MAC address associated with an IP address (correct)

To request the MAC address of a router

In the given network communication example, how does Bob obtain Sally's MAC address?

Bob sends an ARP request message to the LAN (correct)

Bob sends a broadcast message to Sally

Bob sends an IP request message to Sally

Bob sends a unicast message to Sally

If two computers are in the same LAN, can they communicate directly without a router?

Yes Signup and view all the answers

Which layer of the OSI model is responsible for communication between devices on different networks?

Network layer Signup and view all the answers

What is the purpose of a router in network communication?

To facilitate communication between devices on different networks Signup and view all the answers

What information is required for communication between devices in a network?

Both MAC address and IP address Signup and view all the answers

Which device is responsible for connecting all the segments of a network together in a star topology Ethernet network?

Basic Hub Signup and view all the answers

What is the purpose of a default gateway in a LAN?

To send data towards the destination if it is not part of the network Signup and view all the answers

What is a collision domain?

A network segment where data collisions can occur when multiple devices attempt to transmit data at the same time Signup and view all the answers

What can collisions cause in a network?

Data corruption and loss Signup and view all the answers

How can collisions be reduced in a network?

Dividing networks into segments with routers or layer three switches Signup and view all the answers

What is a broadcast domain?

A network segment where broadcast messages are sent and received by all devices Signup and view all the answers

What can high broadcast traffic cause in a network?

Congestion Signup and view all the answers

Which device is responsible for connecting two similar network segments together and breaking up collision domains?

Bridge Signup and view all the answers

What is the primary function of a switch?

To recognize frames and pay attention to the source and destination MAC address Signup and view all the answers

Where are firewalls usually placed in a network?

Closest to the WAN connection Signup and view all the answers

What is the main purpose of a DHCP server?

To assign IP addresses to hosts Signup and view all the answers

What is the goal of a DNS server?

To match hostnames to IP addresses Signup and view all the answers

Which model is a condensed version of the OSI model and is composed of four layers?

DoD Model Signup and view all the answers

What is the most common protocol suite for networking today?

TCP/IP Signup and view all the answers

Which layer of the OSI Model do TCP and UDP operate at?

Transport layer Signup and view all the answers

What is the main difference between TCP and UDP?

TCP is connection-oriented while UDP is connectionless Signup and view all the answers

Which step is part of the TCP three-way handshake?

SYN-ACK Signup and view all the answers

What does the client send to the server to initiate the TCP three-way handshake?

SYN Signup and view all the answers

What does the server respond with during the TCP three-way handshake?

SYN-ACK Signup and view all the answers

What does the client send to the server to confirm the TCP connection establishment?

ACK Signup and view all the answers

Which layer of the OSI Model is the IP Header part of?