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How many bits are in logical addresss If a logical address space of eight pages of 1024 words each mapped onto a physical memory of 32 frames?
Wiki User
∙ 12y ago
a.
Logical address will have
3 bits to specify the page number (for 8 pages) .
10 bits to specify the offset into each page (210 =1024 words) = 13 bits.
b.
For (25) 11 32 frames of 1024 words each (Page size = Frame size)
We have 5 + 10 = 15 bits.
Elwin Williamson
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Consider a logical address space with 4 pages of 1024 bytes per pageeach mapped onto a physical memory of 64 frames. how many bits are there in logical address?
4 pages -> 2^2 bits 1024 bytes -> 2^10 bits 64 frames -> 2^6 bits Therefore: Logical memory = 2+10=12 bits Physical memory = 10 +6 =16 bits
What Bridges filter network frames based on?
physical address
Consider a logical address space of eight pages of 1024words each mapped onto a physical memory of 32 frames how many bits are there in the logical address?
As was given for a 4 Page, 1024 words & 64 frames (shown below) 4 pages -> 2^2 bits 1024 bytes -> 2^10 bits 64 frames -> 2^6 bits Therefore: Logical memory = 2+10=12 bits Physical memory = 10 +6 =16 bits The answer for this problem is 13. 8 pages -> 2^3 bits 1024 bytes -> 2^10 bits 32 frames -> 2^5 bits Therefore: Logical memory = 3+10=13 bits (Page + Word) Physical memory = 10 + 5 =15 bits (Word + Frame)
What does the format for Ethernet frames specify?
destination (physical/hardware address) Source (physical/hardware address) Start flag (start of message indicator) Recipient sender encapsulated data end of frame
Does an unmanaged switch have its own MAC address?
yes i think, because the MAC address is the physical address which is assigned by the vendor of the Ethernet card. ** Improved Answer ** No, Unmanaged switches do not have a MAC address. All they do is filter, forward or flood frames.
What layer of the ois model adds source and destination MAC address to frames?
in the osi model data link layer is adds source & destination mac address to frames
The address of the beginning of a page frame is found by multiplying the page frame number by the number of frames?
The address of the beginning of a page frame is found by multiplying the page frame number by the number of frames.
Which osi model layer generates and detects voltage so as transmit and receive signals carrying data?
The physical layer of the OSI model is responsible for encoding frames in to the electronic/RF/optical signals of the physical medium and for reading the media and translating back in to usable frames.
What addressing information is recorded by a switch to build its MAC address table?
the source Layer 2 address of incoming frames
What device is used to move frames between a source and a destination on a MAC address?
switch
What does a switch do to build a MAC address database?
It stores frames in temporary buffer space it floods and notes the source address it associates the source address with a particular port.
How do bridges keep track of whether they should forward or filter frames?
they maintain a filtering database that identifies which frames can be filtered and which should be forwarded, based on their destination MAC address.
