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Apr
17
comment Which device can create a new network?
@heavyd: Thanks. Is the following a necessary condition for being a network: in a network, must every connected machine be assigned an internal IP?
Apr
13
comment what is RouterOS used for in my network?
Is 192.168.0.2 in my internal network or in the external network (i.e. the Internet) or some intermediate network?
Apr
13
comment what is RouterOS used for in my network?
done. Could you explain the output?
Apr
13
comment what is RouterOS used for in my network?
I don't have tracert on my Ubuntu. Which package to install?
Apr
13
comment Relation between wireless network's frequency, speed, and range?
Do you call the freq range from 2.412GHz to 2.462GHz (offered as channel options in my router) "a 2.4GHz spec"?
Apr
13
comment Relation between wireless network's frequency, speed, and range?
" if an N router is configured for B/G/N it will only operate in 2.4GHz. Most routers can only operate at one frequency for all connections, so if you allow a 2.4GHz spec on your network, then it has to run everything at 2.4." My router is G router (supports G, B and their mix). Its channel options vary from channel 1 (2.412GHz) to 11 (2.462GHz), doesn't it not just operate on one frequency?
Apr
13
comment Relation between wireless network's frequency, speed, and range?
Thanks. (1) My router is linksys WRT54GL. Its options for channel are 1 (2.412GHz) to 11 (2.462GHz). Does it mean that the router will not create a wireless network with 5GHz? (2) My router supports "Mixed", "B-only" and "G-only" network mode. Is 5GHz only supported by 802.11a, not by 802.11b or 802.11g?
Apr
13
comment what is RouterOS used for in my network?
each ip is for a different version of RouterOS.
Apr
13
comment what is RouterOS used for in my network?
Thanks! How can I find out the my local internal network's internal ip range?
Mar
6
comment Does moving data between memory and secondary storage device need to go through cpu registers?
thanks!.... @JamieHanrahan
Mar
5
comment Does moving data between memory and secondary storage device need to go through cpu registers?
Thanks. How about within main memory, within a hard drive, and between an internal hard drive and an external hard drive?
Jan
17
comment Batch download multiple images after inspect elements in Chrome browser?
Thanks. I have tried FF + DownloadThemAll on an online book reading site, but it seems that it can't capture the pictures for the pages. Can you also try to see if it works?
Jan
12
comment What are functional unit and control logic of a cpu?
@slhck; about the first point, does a superscalar architecture replicate only functional units (i.e. execute unit) as said in the text, or both functional units (i.e. execute unit) and the control logic (i.e. fetch and decode units) as shown in figure 1-7(b)?
Jan
12
comment What are functional unit and control logic of a cpu?
(2) Also by multithreading, the text actually means time-multiplex. Why replicating control logic is necessary for time-multiplex? Can't multiple threads share the same control units (fetch unit and decode unit) at different times?
Jan
12
comment What are functional unit and control logic of a cpu?
@slhck: My questions are more than what you thought. The text says superscalar architectures replicate the functional units, while multithreading replicates not only the functional units, but also the control logic. (1) But in figure 1.7(b), the superscalar one have multiple fetch and decode units besides multiple execute units, so I am not sure if "control logic == fetch and decode units" and "functional unit == execute unit".
Jan
12
comment What are functional unit and control logic of a cpu?
Thanks. do you mean that you think that functional unit and execute unit the same thing in the book? (note that I am not sure about if execute unit and execution unit are the same). what about control logic?
Jan
12
comment What are functional unit and control logic of a cpu?
no it doesn't. can you tell me what they are?
Jan
8
comment What manages IO between a buffer and a device?
Thanks. What does ""only give data to the requesting program if the I/O completes successfully" mean? What is the opposite of "only give data to the requesting program if the I/O completes successfully"?
Jan
4
comment What determines the page size and the cluster size?
@sawdust Thanks. (1) Wikipedia says "Page size is usually determined by processor architecture. " So is a memory's page size determined by the CPU? A memory may have different page sizes when it is used by different CPUs? (2) You said that MMU put constraints on page size, and if I am correct, MMU is part of a CPU, so is your reply consistent with Wikipedia? (3) Is the OS not involved in determining the page size?
Jan
1
comment Are the size of a memory page and the size of a file system cluster always the same?
@sawdust: is it always or almost always true that "The virtual memory manager will bypass the filesystem, and access the disk driver directly"?