Lower Layers Part 2 Flashcards
What are the three types of networks classified by area?
LAN (Local Area Network), MAN (Metropolitan Area Network), WAN (Wide Area Network)
Personal Area Networks (PANs) are also sometimes included.
What is the primary distinction between LANs and WANs in terms of technology?
LANs typically use simpler technologies and protocols, while WANs require more complex planning and structured addressing.
What does CSMA/CD stand for?
Carrier Sense Multiple Access Collision Detection
What was the main purpose of early LANs?
To connect terminals to timeshare computers
What is one of the main applications of WANs?
File transfer, job transfer, remote login
True or False: Ethernet was originally developed at Xerox in the 1970s.
True
Fill in the blank: The maximum frame size for Ethernet is _______ bytes.
1500
What is the significance of the 0x55 preamble in Ethernet frames?
It allows receivers to synchronize with the data transmission.
What technology is known for connecting computers within data centers?
Vendor Networks
What is the typical maximum length of an Ethernet segment without amplification?
500 meters
What protocol suite did ARPANET originally use before TCP/IP?
NCP (Network Control Protocol)
What are the two main types of Ethernet cables mentioned?
Coaxial cable and twisted pair cable
What happens when a collision is detected in a CSMA/CD network?
The network is jammed with a specific pattern to inform all stations of the collision.
What is the minimum frame size for Ethernet?
64 bytes
True or False: The function of the VLAN tag in an Ethernet frame is mandatory.
False
What does ATM stand for in networking technology?
Asynchronous Transfer Mode
What is the purpose of the inter-packet gap in Ethernet?
To allow time for the network to recover before the next packet is sent.
What is the main challenge of WAN technology historically?
Slow speed and unreliability
What is the maximum diameter for an Ethernet network determined by?
The maximum length of the transmission medium and the permissible number of repeaters.
What is the function of a checksum in Ethernet frames?
To verify the integrity of the data within the packet.
What does the term ‘collision domain’ refer to?
The set of all stations whose packets might mutually collide.
Fill in the blank: Ethernet originally operated at _____ Mbps.
3
True or False: The Ethernet protocol allows multiple stations to transmit simultaneously without any control.
False
What are the different BaseT standards for Ethernet?
10BaseT, 100BaseT, 1000BaseT
These standards represent different speeds and technologies for Ethernet networking.