What does Smurf mean in drugs?
Smurfing is purchasing cold and allergy medications containing pseudoephedrine and knowingly or unknowingly selling or trading them to those who cook meth. This practice started happening when states became concerned about the meth outbreaks that were happening.
What is Papa Smurfs name?
Le Grand Schtroumpf
What is the difference between ACK and NACK?
ack is used for positive acknowledgements. basic. nack is used for negative acknowledgements (note: this is a RabbitMQ extension to AMQP 0-9-1) basic.
Where is the ack?
Nantucket Memorial Airport (IATA: ACK, ICAO: KACK, FAA LID: ACK) is a public airport on the south side of the island of Nantucket, Massachusetts, United States. It is owned by the Town of Nantucket and is located three miles (5 km) southeast of the town center.
How big is an ack?
One of the smallest packets commonly seen on networks is a TCP ACK. This has a 20 byte IP header and a 20 byte TCP header, adding up to 40 bytes. Because this is smaller than ethernet’s minimum payload size of 46 bytes, it is automatically padded prior to transmission to bring it up to size.
What is the average packet size on the Internet?
1476 – 1500 bytes
How many bytes is an Ethernet packet?
What is the minimum size of Ethernet frame?
Ethernet has a minimum frame size of 64-bytes. When you include the frame preamble and the minimum interframe gap, it can take 80-bytes to transport 64-bits of data which is an efficiency of 10%.
What is maximum frame size?
What is the maximum size? The original Ethernet IEEE 802.3 standard defined the minimum Ethernet frame size as 64 bytes and the maximum as 1518 bytes. The maximum was later increased to 1522 bytes to allow for VLAN tagging.
Where is the SFD found in an Ethernet frame?
Answer. Answer: The SFD is the eight-bit (one-byte) value that marks the end of the preamble, which is the first field of an Ethernet packet, and indicates the beginning of the Ethernet frame.
Which field in an Ethernet frame is used for error detection?
How is FCS calculated?
The FCS field contains a number that is calculated by the source node based on the data in the frame. This number is added to the end of a frame that is sent. If the two numbers are different, an error is assumed and the frame is discarded. The FCS provides error detection only.
Is Ethernet address same as MAC address?
The MAC (Media Access Control) address is a devices hardware address. Each device on a local area network must have a unique MAC address assigned. The MAC address is often referred to as the Ethernet Address on an Ethernet network. They are in fact the same thing.
What are the two sizes minimum and expected maximum of an Ethernet frame?
The minimum Ethernet frame size is 64 bytes, and the expected maximum is 1518 bytes. The frame size might be larger than that if additional requirements are included, such as VLAN tagging.
Why is Ethernet frame size 1518 or 1522?
With the normal untagged Ethernet frame overhead of 18 bytes, the Ethernet maximum frame size is 1518 bytes. If a 1500 byte IP packet is to be carried over a tagged Ethernet connection, the Ethernet frame maximum size needs to be 1522 due to the larger size of an 802.1Q tagged frame.
What is Ethernet frame size?
What is the purpose of the 8 byte frame start field in an Ethernet frame?
Ethernet Frames The first 8 bytes are the preamble. Some Ethernet systems don’t transmit continuously, so the preamble is used to synchronize a receive clock before data is transmitted.
How do I know my Ethernet frame size?
The frame size of a standard Ethernet frame (defined by RFC 894) is the sum of the Ethernet header (14 bytes), the payload (IP packet, usually 1,500 bytes), and the Frame Check Sequence (FCS) field (4 bytes).
What is canonical format indicator?
The Canonical Format Indicator (CFI) bit indicates whether the following 12 bits of VLAN identifier conform to Ethernet or not. (The other possible value, CFI=1, is used for Token Ring LANs, and tagged frames should never be bridged between an Ethernet and Token Ring LAN regardless of the VLAN tag or MAC address.)
What is the purpose of preamble bits in an Ethernet frame?
Ethernet Frames A frame holds one packet of data. The first 8 bytes are the preamble. Some Ethernet systems don’t transmit continuously, so the preamble is used to synchronize a receive clock before data is transmitted.
What is the range of MAC address according to IEEE 802.3 Ethernet standard?
The IEEE 802 MAC address originally comes from the Xerox Network Systems Ethernet addressing scheme. This 48-bit address space contains potentially 248 (over 281 trillion) possible MAC addresses. The IEEE manages allocation of MAC addresses, originally known as MAC-48 and which it now refers to as EUI-48 identifiers.
What is frame in OSI model?
In the OSI model of computer networking, a frame is the protocol data unit at the data link layer. A frame is “the unit of transmission in a link layer protocol, and consists of a link layer header followed by a packet.” Each frame is separated from the next by an interframe gap.
What is 802.1 Q trunking?
VLAN Trunking (802.1Q) allows physical network interfaces in a computing environment to be shared, or multi-homed. Network devices on the network then only interact with packets that have the correct tags. This allows multiple different logical networks to run on the same cable and switch infrastructure.
What is 802.1 Q enable?
802.1Q tunneling enables service providers to use a single VLAN to support customers who have multiple VLANs, while preserving customer VLAN IDs and keeping traffic in different customer VLANs segregated. A port configured to support 802.1Q tunneling is called a tunnel port.
What does VLAN 0 mean?
Priority Tagging feature
What does untagged VLAN mean?
Untagged VLANs An untagged port, or access port on a Cisco switch, connects to hosts (such as a server). The host is unaware of any VLAN configuration. The connected host sends its traffic without any VLAN tag on the frames. When the frame reaches the switch port, the switch will add the VLAN tag.