Linux Networking and Network Interface Cards Quiz

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Questions and Answers

What command can be used in Linux to display the MAC address of the Ethernet network interface card?

netinfo

ethmac

ifconfig (correct)

macaddr

Why are network cards considered smart devices?

They have built-in antivirus protection.

They are capable of autonomous decision-making.

They are capable of self-repairing in case of damage.

They inspect every packet on the local network to filter traffic. (correct)

What is the correct order of the steps involved in the detection of a corrupted frame at the Data Link layer?

Frame Preparation, FCS Verification, Transmission Over the Medium

FCS Verification, Frame Reception, Frame Preparation

Detection of Corruption, Handling Corrupted Frames, Notification or Logging (correct)

Frame Reception, Detection of Corruption, FCS Verification

Place the numbers 1 to 7 beside each part to show its order within an Ethernet frame.

1, 2, 3, 4, 5, 6, 7 Signup and view all the answers

How many bytes make up the Source MAC address in an Ethernet frame?

6 Bytes Signup and view all the answers

In the context of network protocols, which category does Token Ring belong to?

Controlled access Signup and view all the answers

What is the role of CSMA/CD protocol in Ethernet when a collision occurs?

Both stations stop transmitting and wait for a fixed period of time Signup and view all the answers

Which step in the ARP process involves sending a broadcast to the network?

Step 2: Entry not found, sends a broadcast Signup and view all the answers

Why is the Ethernet frame header modified at each router as a Data Link frame moves through an internetwork?

To ensure proper delivery to the final destination Signup and view all the answers

Which category does WiFi belong to in terms of network protocol access?

Contention based Signup and view all the answers

What is the main purpose of an IP address in a networked computer?

To uniquely identify a device on the network Signup and view all the answers

How are IPv4 addresses normally represented?

As decimal numbers Signup and view all the answers

What is the role of a DHCP server?

To allocate IP settings to the machine Signup and view all the answers

What is the lease time in the context of DHCP servers?

The time allocated to a device for using an IP address Signup and view all the answers

What are the three mandatory IP settings a machine needs to access remote web sites?

IP address, Local router's address, Subnet mask Signup and view all the answers

What is the role of the local DNS server on an IP network?

Converting names to IP addresses Signup and view all the answers

How would you determine the IP network address of a computer given its IPv4 address and subnet mask?

Perform a bitwise AND operation between the IP address and the subnet mask Signup and view all the answers

What does CIDR stand for in relation to subnet masks?

Classless Inter-Domain Routing Signup and view all the answers

If the Network layer settings suggest the source and destination computers of a web interaction are on different networks, what MAC address does the Data Link use as the source and destination of the transmission?

Source: Source Computer MAC Address, Destination: Router MAC Address Signup and view all the answers

What category does Token Ring belong to in terms of network protocol access?

Token Passing Protocol Signup and view all the answers

Study Notes

Displaying MAC Address in Linux

The ip link show command can be used to display the MAC address of the Ethernet network interface card in Linux.

Network Cards

Network cards are considered smart devices because they have their own processing power and can perform tasks independently.

Detection of Corrupted Frames

The correct order of steps involved in the detection of a corrupted frame at the Data Link layer is:
- 1. FCS (Frame Check Sequence) calculation
- 1. FCS comparison
- 1. Error detection
- 1. Error correction
- 1. Frame discard
- 1. Retransmission
- 1. Notification

Ethernet Frame Structure

The correct order of parts within an Ethernet frame is:
- 1. Preamble
- 1. SFD (Start Frame Delimiter)
- 1. Destination MAC address
- 1. Source MAC address
- 1. EtherType
- 1. Payload
- 1. FCS (Frame Check Sequence)
The Source MAC address in an Ethernet frame consists of 6 bytes.

Network Protocols

Token Ring belongs to the LAN (Local Area Network) category in terms of network protocol access.
WiFi belongs to the WLAN (Wireless Local Area Network) category in terms of network protocol access.

CSMA/CD Protocol

The role of CSMA/CD protocol in Ethernet is to handle collisions by:
- Stopping transmission
- Backing off
- Retrying transmission

ARP Process

The step in the ARP process that involves sending a broadcast to the network is the ARP request.

Ethernet Frame Modification

The Ethernet frame header is modified at each router as a Data Link frame moves through an internetwork to update the source MAC address.

IP Address

The main purpose of an IP address in a networked computer is to provide a unique identifier for the device on the network.
IPv4 addresses are normally represented in dotted decimal notation (e.g., 192.0.2.1).

DHCP Server

The role of a DHCP server is to dynamically assign IP addresses and other network settings to devices on a network.
The lease time in the context of DHCP servers is the duration of time for which a device is assigned an IP address.

Mandatory IP Settings

The three mandatory IP settings a machine needs to access remote web sites are:
- IP address
- Subnet mask
- Default gateway

DNS Server

The role of the local DNS server on an IP network is to resolve hostnames to IP addresses.

IP Network Address

The IP network address of a computer can be determined by performing a bitwise AND operation on the IPv4 address and subnet mask.

CIDR

CIDR stands for Classless Inter-Domain Routing in relation to subnet masks.

MAC Address in Data Link

If the Network layer settings suggest the source and destination computers of a web interaction are on different networks, the Data Link uses the MAC address of the router as the source and destination of the transmission.

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Description

Test your knowledge on Linux networking commands, network interface cards, and their functionalities. This quiz covers topics such as displaying MAC addresses, the intelligence of network cards, and the benefits of using smart devices in a network.