Linux Networking and Network Interface Cards Quiz

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
  • 2. FCS comparison
  • 3. Error detection
  • 4. Error correction
  • 5. Frame discard
  • 6. Retransmission
  • 7. Notification

Ethernet Frame Structure

• The correct order of parts within an Ethernet frame is:
  • 1. Preamble
  • 2. SFD (Start Frame Delimiter)
  • 3. Destination MAC address
  • 4. Source MAC address
  • 5. EtherType
  • 6. Payload
  • 7. 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.

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.