Change The Default Headers In Word For Mac

CHANGE THE DEFAULT HEADERS IN WORD SERIAL BITS INSTEAD

The default heading styles in Word look pretty lame. Ethernet transmits data with the most-significant octet (byte) first within each octet, however, the least-significant bit is transmitted first. Word 2010 Font default message box.A data packet on the wire and the frame as its payload consist of binary data. In the ensuing message box, choose the radio button for All documents based on the Normal.dotm template, then click OK. Click the Set As Default button at the bottom of the dialog. In the Font dialog, change the font and/or font size to your preference.

Click the Format button from top right of your toolbar to open it. Simply selecting the checkbox again wonвЂ™t retrieve the deleted. Note: If you change your mind, press Command-Z on your keyboard to add the deleted text back. Deselect the Header or Footer checkbox. In the Document sidebar, click the Document tab.

IEEE 802.1ad (Q-in-Q) allows for multiple tags in each frame. Field sizes for this option are shown in brackets in the table above. You can adjust.802.3 Ethernet packet and frame structureEthertype ( EthernetВ II) orВ length ( IEEEВ 802.3)The optional 802.1Q tag consumes additional space in the frame.

Change The Default Headers In Word Serial Bits Instead

For Ethernet variants transmitting serial bits instead of larger symbols, the (uncoded) on-the-wire bit pattern for the preamble together with the SFD portion of the frame is 10101010 10101010 10101010 10101010 10101010 10101010 10101010 10101011 :вЂЉsections 4.2.5 and 3.2.2 The bits are transmitted in order, from left to right. It is followed by the SFD to provide byte-level synchronization and to mark a new incoming frame. The preamble consists of a 56-bit (seven-byte) pattern of alternating 1 and 0 bits, allowing devices on the network to easily synchronize their receiver clocks, providing bit-level synchronization.

The first two octets of the tag are called the Tag Protocol IDentifier (TPID) and double as the EtherType field indicating that the frame is either 802.1Q or 802.1ad tagged. When used as EtherType, the length of the frame is determined by the location of the interpacket gap and valid frame check sequence (FCS).The IEEE 802.1Q tag or IEEE 802.1ad tag, if present, is a four-octet field that indicates virtual LAN (VLAN) membership and IEEE 802.1p priority. Values of 1500 and below mean that it is used to indicate the size of the payload in octets, while values of 1536 and above indicate that it is used as an EtherType, to indicate which protocol is encapsulated in the payload of the frame. Gigabit Ethernet transceiver chips use the GMII bus, which is an eight-bit wide interface, so the preamble sequence followed by the SFD would be 0x55 0x55 0x55 0x55 0x55 0x55 0x55 0xD5 (as bytes).Frame вЂ“ data link layer Header The header features destination and source MAC addresses (each six octets in length), the EtherType field and, optionally, an IEEE 802.1Q tag or IEEE 802.1ad tag.The EtherType field is two octets long and it can be used for two different purposes. Fast Ethernet transceiver chips utilize the MII bus, which is a four-bit (one nibble) wide bus, therefore the preamble is represented as 14 instances of 0xA, and the SFD is 0xA 0xB (as nibbles). The connection between a PHY and MAC is independent of the physical medium and uses a bus from the media independent interface family ( MII, GMII, RGMII, SGMII, XGMII).

The standard states that data is transmitted least significant bit (bit 0) first, while the FCS is transmitted most significant bit (bit 31) first. According to the standard, the FCS value is computed as a function of the protected MAC frame fields: source and destination address, length/type field, MAC client data and padding (that is, all fields except the FCS).Per the standard, this computation is done using the left shifting CRC32 BZIP2 (poly = 0x4C11DB7, initial CRC = 0xFFFFFFFF, CRC is post complemented, verify value = 0x38FB2284) algorithm. Non-standard jumbo frames allow for larger maximum payload size.The frame check sequence (FCS) is a four-octet cyclic redundancy check (CRC) that allows detection of corrupted data within the entire frame as received on the receiver side. The maximum payload is 1500 octets. When the actual payload is less, padding bytes are added accordingly. 802.1ad uses a TPID of 0x88a8.The minimum payload is 42 octets when an 802.1Q tag is present and 46 octets when absent.

This makes the 'verify' value (sometimes called 'magic check') 0x2144DF1C. Since the data is received least significant bit first, and to avoid having to buffer octets of data, the receiver typically uses the right shifting CRC32. (The result is non-zero because the CRC is post complemented during CRC generation). An alternative is to calculate a CRC on both the received data and the FCS, which will result in a fixed non-zero 'verify' value.

Novell raw IEEE 802.3 non-standard variation frame Ethernet II frame, or Ethernet Version 2, or DIX frame is the most common type in use today, as it is often used directly by the Internet Protocol. After a packet has been sent, transmitters are required to transmit a minimum of 96 bits (12 octets) of idle line state before transmitting the next packet.Types Ethernet frame differentiationThere are several types of Ethernet frames: Interpacket gap вЂ“ physical layer Interpacket gap (IPG) is idle time between packets. Later physical layers use an explicit end of data or end of stream symbol or sequence to avoid ambiguity, especially where the carrier is continually sent between frames an example is Gigabit Ethernet with its 8b/10b encoding scheme that uses special symbols which are transmitted before and after a frame is transmitted. Since the complementing of the CRC may be performed post calculation and during transmission, what remains in the hardware register is a non-complemented result, so the residue for a right shifting implementation would be the complement of 0x2144DF1C = 0xDEBB20E3, and for a left shifting implementation, the complement of 0x38FB2284 = 0xC704DD7B.The end of a frame is usually indicated by the end-of-data-stream symbol at the physical layer or by loss of the carrier signal an example is 10BASE-T, where the receiving station detects the end of a transmitted frame by loss of the carrier.

The first two octets of the tag are the Tag Protocol Identifier (TPID) value of 0x8100. This encapsulation is defined in the IEEE 802.3ac specification and increases the maximum frame by 4 octets.The IEEE 802.1Q tag, if present, is placed between the Source Address and the EtherType or Length fields. Differentiation between frame types is possible based on the table on the right.In addition, all four Ethernet frame types may optionally contain an IEEE 802.1Q tag to identify what VLAN it belongs to and its priority ( quality of service). IEEE 802.2 Subnetwork Access Protocol (SNAP) frameThe different frame types have different formats and MTU values, but can coexist on the same physical medium.

For example, an EtherType value of 0x0800 signals that the frame contains an IPv4 datagram. The Q-tag is followed by the rest of the frame, using one of the types described above.Ethernet II framing (also known as DIX Ethernet, named after DEC, Intel and Xerox, the major participants in its design ), defines the two-octet EtherType field in an Ethernet frame, preceded by destination and source MAC addresses, that identifies an upper layer protocol encapsulated by the frame data. The TPID is followed by two octets containing the Tag Control Information (TCI) (the IEEE 802.1p priority ( quality of service) and VLAN id).

Change The Default Headers In Word For Mac