start with 192.168.157.0/24 for the number of hosts that need 128 because u need to use all 8 bits in the host range of 255,
192.168.157.1-192.168.157.255
because we cant use 0 and 256 because they are broadcast addresses.
then move onto 192.168.158.0/25 to accommodate the number of hosts of 90
192.168.158.1- 192.168.158.127
one again cant use 0 and 128 because they are for broadcast.
and then the 60 host will continue at the ip address of 192.168.158.129
and so just follow this patten.
MAC addressing. IP addressing. port addressing. specific address.
Addressing is the present participle of address.
Flat
When addressing a standard envelope, the correct location for the return address is the upper left corner of the envelope.
Direct Addressing in computer systems architecture is when the number in the address field of the instruction is the actual memory address to be accessed.
the address that is obtained by applying any specified indexing or indirect addressing rules to specified address
Each instruction of a computer specifies an operation on certain data. The are various ways of specifying address of the data to be operated on. These different ways of specifying data are called the addressing modes. The most common addressing modes are:Immediate addressing modeDirect addressing modeIndirect addressing modeRegister addressing modeRegister indirect addressing modeDisplacement addressing modeStack addressing modeTo specify the addressing mode of an instruction several methods are used. Most often used are :a) Different operands will use different addressing modes.b) One or more bits in the instruction format can be used as mode field. The value of the mode field determines which addressing mode is to be used.The effective address will be either main memory address of a register.Immediate Addressing:This is the simplest form of addressing. Here, the operand is given in the instruction itself. This mode is used to define a constant or set initial values of variables. The advantage of this mode is that no memory reference other than instruction fetch is required to obtain operand. The disadvantage is that the size of the number is limited to the size of the address field, which most instruction sets is small compared to word length.INSTRUCTIONOPERANDDirect Addressing:In direct addressing mode, effective address of the operand is given in the address field of the instruction. It requires one memory reference to read the operand from the given location and provides only a limited address space. Length of the address field is usually less than the word length.Ex : Move P, Ro, Add Q, Ro P and Q are the address of operand.Indirect Addressing:Indirect addressing mode, the address field of the instruction refers to the address of a word in memory, which in turn contains the full length address of the operand. The advantage of this mode is that for the word length of N, an address space of 2N can be addressed. He disadvantage is that instruction execution requires two memory reference to fetch the operand Multilevel or cascaded indirect addressing can also be used.Register Addressing:Register addressing mode is similar to direct addressing. The only difference is that the address field of the instruction refers to a register rather than a memory location 3 or 4 bits are used as address field to reference 8 to 16 generate purpose registers. The advantages of register addressing are Small address field is needed in the instruction.
A microprocessor with 12 address lines is capable of addressing 4096 locations in memory. The Intel 4004 and the DEC PDP-8 are examples of processors with 12 address lines.
The Logical address is what we assign to the Network device to identify. for example IP Address.
the address that is obtained by applying any specified indexing or indirect addressing rules to specified address
Direct addressing involves specifying the exact memory address where data is stored or fetched. Indirect addressing involves using a memory address that points to where the data is stored or fetched. In direct addressing, the actual data is accessed, while in indirect addressing, a reference to the data's location is accessed.
Addressing is a process of putting a person's name and address on an item of mail, or making a speech or speaking to a person or group.