PE Study Notes
PE means portable executable (portable execution body ). Overall hierarchical distribution of PE file structure:--------------| Dos MZ header || -------------- || Dos Stub || -------------- || PE Header || -------------- || Section Table || -------------- || Section 1 || -------------- || Section 2 || -------------- || Section... || -------------- || Section N |--------------1. Summary of PE
. 2. The segmentation principle of TCP/IP V4 protocol NetworkThe TCP/IP protocol assigns an IP address to each host in the network, which contains two pieces of information: The network address and the host address. There are two ways to store this information: one is to use two separate domains, so we have to consider the maximum length of two domains, the other is to wrap the network address and host address in 1 domains, sometimes the host address
If the Alert Log contains the following information:
* ** Session ID: (538.48) 08:41:30. 649
Warning: cocould not lower the asynch I/O limit to 224 for SQL direct I/O. It is set to-1
Warning: cocould not lower the asynch I/O limit to 192 for SQL direct I/O. It is set to-1
Warning: cocould not lower the asynch I/O limit to 224 for SQL direct I/O. It is set to-
addresses of the router are 192, 168, 1, and 1. The following logon interface is displayed when 192, 168, 1, and 1 are written to IE.
Enter the access account and password to go to the router access interface. You can easily acc
The command set of Oracle clusterware can be divided into the following four types:
Node layer: osnodes
Network Layer: oifcfg
Cluster layer: crsctl, ocrcheck, ocrdump, ocrconfig
Application Layer: srvctl, onsctl, crs_stat
Node layer:
The command for managing the node layer is olsnode.
[Oracle @ node1 bin] $. /olsnodes- helpusage: olsnodes [-N] [-p] [-I] [
|-L] [-G] [-
V] Where -
N print node number with the node name -
P print private interconnect na
: 0.0.0.0––127.255.255.255, the standard subnet mask is 255.0.0.0.
Class B IP Address
Scope: 128.0.0.0––191.255.255.255, the standard subnet mask is 255.255.0.0.
Class C IP Address
Scope: 192.0.0.0––223.255.255.255, the standard subnet mask is 255.255.255.0.
As you can see from the above description, the first byte between 0 and 127 is a Class A IP address, between 128 and 191 is a class B IP address, and between 192 and 223 is the C class IP add
worst case is that the K process each process assigned two printers, then the process is deadlocked here each is waiting to allocate a third printer, as long as there is a printer, the process can be released in succession, does not produce a deadlock, so the condition is not to create a deadlock is 2k+1Class A: 1.0.0.1~126.255.255.254 first byte range 1~126 (0000 0001~0111 1110) ' 0 ' starts with Class B: 128.0.0.1 to 191.255.255.254 First byte rang
hosts)
2. configure master:
[Root @ localhost mysql] # vi/etc/my. cnf // edit the configuration file
Server-id = 1 // The default value is 1. if not, change it to 1.
Thread_concurrency = 2 // number of concurrent threads (CPU * 2)
Log-bin = mysql-bin // enable the binary log function
Save and exit, and restart mysql.
Log on to mysql:
[Root @ localhost mysql] #
extracted by identifying the features of the image and classifying it based on tagged data.Such an integrated system is a multilayer perceptron, which is a neural network with dense connections of multi-layer neurons. A classic depth network contains many parameters, and because of the lack of enough training samples, it is virtually impossible to train a model that fits. But for the CNN model, you can use a large data set such as Imagenet when you train a network from the beginning. The reason
192.56.76.0 netmask 255.255.255.0 dev eth0
The preceding command adds a route from "eth0" to "192.56.76.x. The Class C network mask modifier is not actually necessary because 192. * is a class c ip address. The word "Dev" can also be omitted here.
Routing is a very profound topic. AboutrouteYou can useinfo routeCommand.
ConclusionLinux was designed for the network from the very beginning. It has built-in mature functions that were previously only vi
Oracle Development Series (1) maddening null values and null values (no results)
Recently, I encountered some problems when I was doing development and writing operations. I found the cause for a long time and did not know it before. In this case, let's take a note and give it a reference.I. null Value
The following is the simplest example. It must be much more complicated than this SQL statement in normal work. In this case, we only present this erro
In recent years, network operators have been heavily dependent on ROADM-based optical transmission equipment, using a fixed point-to-point WDN connection, using 10g wavelength in the entire metropolitan area network and wide area network convergence and transmission client services. If these networks are well planned, the existing spectra can be used reasonably and effectively. Typically, a tran0000der transceiver is used to map Client Services with a bandwidth equivalent to a WDM line rate (for
special audio files, and try to use different bit rates to see which one is most appropriate in terms of file size and quality. If most of your files are speech, you can use a relatively low bit rate.
Here is a table that gives you an overview of the most common bit rates:
32 kbit/s: the quality of AM broadcast
48 kbit/s: Generally, the bit rate of a long-time speech podcast.
64 kbit/s: the bit rate of normal-length speech podcasts
96 kbit/s: quality of FM Broadcast
128 kbi
"", and " #192;" indicates "à ".1.2 garbled
We can use codeview to view the encoding of "received letter, thank you". Its GBK encoding is:
C0 B4 D0 C5 ca D5 B5 BD A3 AC D0 BB D0 bb
Some software systems do not support Chinese characters. These non-ASCII characters (1 in bytes) are represented by named entities. For example, " agrave;" is used to represent C0 and " acute;" is used to represent B4. In this
Art of Unit Test (1), artunit
1 #!/usr/bin/env python 2 # encoding: utf-8 3 4 import unittest 5 6 """ 7 the simplyest way to test return value 8 No needs to use stub 9 """ 10 class LogAnalyzer_0(object): 11 def IsValidLogFileName(self, fileName): 12 return str(fileName).endswith('.sln') 13 """ 14 However somethimes we have to rely on the extenal class or method 15 that we cannot
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.