Mastering Network Interface Cards (NICs)

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Which layer of the OSI model is responsible for the MAC address?

Transport layer
Physical layer
Data link layer (correct)
Network layer

Which device is used to connect two similar network segments together and break up collision domains?

Router
Network Interface Card (NIC)
Bridge (correct)
Switch

In the network communication example, what does Bob send to the LAN to find Sally's MAC address?

ARP request (correct)
Broadcast message
Destination MAC address
IP address

Which protocol suite is the most common for networking today and accounts for over 85% of the internet traffic?

TCP/IP (B) Signup and view all the answers

What does Sally do when she sees the ARP request broadcasted by Bob?

Sally responds directly to Bob with her MAC address (D) Signup and view all the answers

Which layer of the DoD model is responsible for host-to-host communication?

Host-to-Host layer (A) Signup and view all the answers

If Sally wanted to reply to Bob, what would she need to find out?

Bob's MAC address (B) Signup and view all the answers

Which device is used to connect multiple segments of a network together and recognizes frames and pays attention to the source and destination MAC address?

Switch (D) Signup and view all the answers

In which scenario would a router be required for communication?

When two computers are in different networks (A) Signup and view all the answers

Which device is used to separate networks and broadcast domains?

Router (D) Signup and view all the answers

Which layer of the OSI model is responsible for the IP address?

Network layer (D) Signup and view all the answers

Which server is responsible for assigning IP addresses to hosts in a network?

DHCP Server (C) Signup and view all the answers

What is the purpose of an ARP request in network communication?

To find the destination MAC address (C) Signup and view all the answers

Which server is responsible for matching hostnames or FQDNs to IP addresses and vice versa?

DNS Server (C) Signup and view all the answers

Which of the following steps does Bob need to follow to determine if the destination IP address is part of his network?

Look at the subnet mask (B) Signup and view all the answers

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

To send data to other networks (B) Signup and view all the answers

What is a collision domain?

A network segment where data collisions can occur (C) Signup and view all the answers

What are the causes of collisions in a collision domain?

Shared mediums and simultaneous transmissions (A) Signup and view all the answers

How can collisions be reduced in a network?

By using switches instead of hubs (B) Signup and view all the answers

What is a broadcast domain?

A network segment where broadcast messages are sent (C) Signup and view all the answers

What are the causes of broadcasts in a broadcast domain?

Broadcast messages and network discovery (B) Signup and view all the answers

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

Transport layer (A) Signup and view all the answers

What is the main difference between TCP and UDP?

TCP is connection-oriented, while UDP is connectionless (C) Signup and view all the answers

Which step initiates the three-way handshake in TCP?

SYN (C) Signup and view all the answers

What is the purpose of the SYN-ACK packet in the three-way handshake?

To acknowledge the request and agree to establish a connection (C) Signup and view all the answers

Which layer of the OSI Model does the IP Header belong to?

Network layer (D) Signup and view all the answers

What is the purpose of the Identification field in the IP Header?

To uniquely identify each IP datagram (A) Signup and view all the answers