cisco chapter 2 communicating over the network

... Devices and their Role on the Network • The network devices that people are most familiar with are called end devices These devices form the interface between the human network and the underlying ... www.bkacad.com The Internet – A Network of Networks • • • A global mesh of interconnected networks (internetworks) meets these human communication needs The Internet is created by the interconnection of networks ... Area Networks • • Networks infrastructures can vary greatly in terms of: – The size of the area covered – The number of users connected – The number and types of services available Local Area Network...

Ngày tải lên: 12/12/2013, 14:15

... computer networking protocol suite The terms are often used interchangeably Strictly speaking, the suite is the definition of the protocols, and the stack is the software implementation of them 24 Network ... Providers) Often also TSPs Connect their customers to the Internet The Internet – ISPs connected to other ISPs 20 The Internet – A Network of Networks •Although there are benefits to using a LAN ... Devices and their Role on the Network Intermediary devices to provide connectivity and to work behind the scenes to ensure that data flows across the network These devices connect the individual...

Ngày tải lên: 01/04/2014, 12:20

... 697Hz B 770Hz C 852Hz * # D 941Hz 1 029 1336 1477 1633 Hz Hz Hz Hz Page Tín hi u chuông Tín hi u xoay chi u, ñi n áp 40 – 130V, t n s 16 – 50Hz Ng t qu ng 2s:4s ho c 0.4s:0.2s:0.4s:2s Page M ch chuông ... Giao ti p thuê bao t ng ñ ài Analog Digital ði n áp vào DC, c p ngu n ði n áp vào 75VAC, 25 Hz Ring Relay SLIC Overvoltage (Subscriber Loop Protection Interface Circuit Circuit) RE (Ring Enable) PD ... (Battery) Line Interface Dòng ñi n m ch vòng thuê bao T SLIC R 48VDC Page 12 Giao ti p thuê bao t ng ñ ài Ch c b o v áp O (OverVoltage Protection) B o v có ñi n áp cao xu t hi n ñư ng dây sét, ñi...

Ngày tải lên: 27/07/2014, 07:20

... knew that dolls could things, they would make them work So, perhaps, they have promised each other to keep it a secret If you stay in the room, Emily will just sit there and stare; but if you go ... soon as lessons are over you must make each other's acquaintance." The pupils bowed ceremoniously, and Sara made a little curtsy, and then they sat down and looked at each other again "Sara," ... "le pere" meant "the father," and "la mere" meant "the mother." Miss Minchin glanced toward her scrutinizingly "You look rather cross, Sara," she said "I am sorry you not like the idea of learning...

Ngày tải lên: 14/12/2013, 21:15

... them considerable money; but if they were -34- offered wages for the service, that would turn it into work and then they would resign The boy mused awhile over the substantial change which had ... He put down his pail, took the white alley, and bent over the toe with absorbing interest while the bandage was being unwound In another moment he was flying down the street with his pail and ... attention to the steamboat Ben stared a moment and then said: "Hi- yi ! You're up a stump, ain't you!" No answer Tom surveyed his last touch with the eye of an artist, then he gave his brush another...

Ngày tải lên: 15/12/2013, 07:15

... along the path, around the garden fence, and by and by fetched up on the steep top of the hill the other side of the house Tom said he slipped Jim's hat off of his head and it on a limb right over ... bushes, and Tom made everybody swear to keep the secret, and then showed them a hole in the hill, right in the thickest part of the bushes Then we lit the candles, and crawled in on our hands and ... hain't he got a father?" says Tom Sawyer "Yes, he's got a father, but you can't never find him these days He used to lay drunk with the hogs in the tanyard, but he hain't been seen in these parts for...

Ngày tải lên: 15/12/2013, 09:15

... assigned to the local host by the operating system in environments where no IP configuration is available TEST-NET Addresses – The address block 1 92. 0 .2. 0 to 1 92. 0 .2. 255 (1 92. 0 .2. 0 /24 ) is set ... used in the network Explain how addresses are assigned to networks by ISPs and within networks by administrators Determine the network portion of the host address and explain the role of the subnet ... www.bkacad.com 21 Classify and Define IPv4 Addresses • Link-Local Addresses • – IPv4 addresses in the address block 169 .25 4.0.0 to 169 .25 4 .25 5 .25 5 (169 .25 4.0.0 /16) are designated as link-local addresses These...

Ngày tải lên: 22/12/2013, 13:17

... it till the next day s 10 The working day at the office is finally over and you decide to take one of your clients out to dinner to discuss a new proposal At the restaurant, you find the service ... personality for the job Add up your answers (A, B or C) and read the results: On your way to work you pick up a newspaper What you read first? A: the “gossip” pages s B: the front page s C: the crossword ... mean a lot of coverage* for the client s C: you tell the client that you don’t approve of his unrealistic expectations s During your coffee break you watch the news and hear about the outbreak...

Ngày tải lên: 23/12/2013, 00:15

... Foreword < /chapter> < /chapter> < /chapter> 2. 7 Making a Chapter Chapters, Prefaces, ... ]> These declarations form what is known as the internal subset The declarations stored in the file referenced by the public or system identifier in the DOCTYPE ... ]> These declarations form what is known as the internal subset The declarations stored in the file referenced by the public or system identifier in the DOCTYPE...

Ngày tải lên: 21/01/2014, 06:20

... around the points XYZ, as the following figure indicates: 9 9 7 7 2 2 2 2 2 9 9 7 7 1 2 1 9 9 7 77 1 2 1 9 99 9 7 7 1 2 1 9 9 7 7 2 Number of circulations = values of matrix K 2 2 2 8 8 2 2 8 8 ... map; RS =max { x2−x1 , y2− y1}/ Filter Dx the step of the grid in the x-direction; Dx= x2− x1/i1−1 Dy the step of the grid in the y-direction; Dx= y2− y1/ j1−1 Dmc the minimal Chebyshev ... Minimum curvature method 23 Fig 2. 4.2c: Interpolation of the SHAPE data set using the Kriging method Fig 2. 4.2d: Interpolation of the SHAPE data set using the ABOS method 24 The resulting function...

Ngày tải lên: 21/01/2014, 07:20

... route 10.81 .25 4 .20 2 25 5 .25 5 .25 5 .25 5 1 72. 26.176.1 name NTP ip route xx.xxx .22 3 .23 25 5 .25 5 .25 5 .25 5 1 72. 26.176.1 name rtp5-esevpn-gw3# Crypto Peer ip route 1 72. 26. 129 .25 2 25 5 .25 5 .25 5 .25 5 1 72. 26.176.1 ... ip route 10.81.7 .21 6 25 5 .25 5 .25 5 .24 8 Tunnel216 name Video831 ip route 10.81.7 .22 4 25 5 .25 5 .25 5 .24 8 Tunnel 224 name vpn-jk2-1711-vpn ip route 10.81.7 .23 2 25 5 .25 5 .25 5 .24 8 Tunnel2 32 name rtp9-ese-test ... xx.xxx .22 3 .23 25 5 .25 5 .25 5 .25 5 dhcp ip route 1 92. 5.41.40 25 5 .25 5 .25 5 .25 4 dhcp ip route xx.xxx .22 3 .25 25 5 .25 5 .25 5 .25 5 dhcp ! end The Tunnel0 interface of the branch router is similarly configured to the...

Ngày tải lên: 24/01/2014, 10:20

... In the first part of the URL, you told the browser to use HTTP, the Hypertext Transfer Protocol hypothetical.ora.com In the next part, you told the browser to contact a computer over the network ... blank line and the document text follow Figure 2- 2 shows the transaction Figure 2- 2 A simple transaction Parsing the HTML The document is in HTML (as promised in the Content-type line) The browser ... about the document and about the server itself Then after a blank line, it returns the document The series of lines before the first blank line is called the response header, and the part after the...

Ngày tải lên: 26/01/2014, 07:20

... The status code indicates the result of the request, and the reason phrase is a human-readable description of the status-code The response header tells the client about the configuration of the ... format The complete rundown of these transformations is covered in Appendix B At this point, the server processes the request by forwarding this information on to the CGI program The CGI program then ... form rendered in the browser Let's fill out the form and submit it, as shown in Figure 2- 5 Figure 2- 5 Filling out the form After hitting the Done button, the browser connects to hypothetical.ora.com...

Ngày tải lên: 26/01/2014, 07:20

... of the Argv Only checkbox While these two items appear grouped together in the Application Flags area, they aren’t related Neither, either, or both can be checked at the same time 46 Chapter 2: ... Save from the File menu of the FileTypes window to save the change—but don’t close the window just yet  62 Chapter 2: BeIDE Projects Changing the icon To modify the icon housed in the resource ... tab • Change the size of the window At the top of Figure 2- 14, you see the original window from the HelloWorld program, while at the bottom of the figure you see the new window from the MyHelloWorld...

Ngày tải lên: 26/01/2014, 07:20

... these memory locations, only whole numbers within the range of - 327 68 to 327 67 can be stored //prompt and read dollar cout

Ngày tải lên: 20/02/2014, 08:20

... s=1 92. 168.1.95->1 72. 31 .23 3 .20 9, d=1 72. 31 .2. 1 32 [6 825 ] NAT: s=1 72. 31 .2. 1 32, d=1 72. 31 .23 3 .20 9->1 92. 168.1.95 [21 8 52] NAT: s=1 92. 168.1.95->1 72. 31 .23 3 .20 9, d=1 72. 31.1.161 [6 826 ] NAT*: s=1 72. 31.1.161, d=1 72. 31 .23 3 .20 9->1 92. 168.1.95 ... d=1 72. 31 .23 3 .20 9->1 92. 168.1.95 [23 311] NAT*: s=1 92. 168.1.95->1 72. 31 .23 3 .20 9, d=1 72. 31.1.161 [6 827 ] NAT*: s=1 92. 168.1.95->1 72. 31 .23 3 .20 9, d=1 72. 31.1.161 [6 828 ] NAT*: s=1 72. 31.1.161, d=1 72. 31 .23 3 .20 9->1 92. 168.1.95 [23 313] ... s=1 72. 31.1.161, d=1 72. 31 .23 3 .20 9->1 92. 168.1.95 [23 325 ] © 20 02, Cisco Systems, Inc All rights reserved ICND v2.0—6-18 Translation Not Installed in the Translation Table? • Verify that: – The configuration...

Ngày tải lên: 06/03/2014, 15:20

... decryptions/µs 32 2 32 = 4.3 × 109 23 1 µs = 35.8 minutes 2. 15 milliseconds 56 25 6 = 7 .2 × 1016 25 5 µs = 11 42 years 10.01 hours 128 21 28 = 3.4 × 1038 21 27 µs = 5.4 × 1 024 years 5.4 × 1018 years 168 21 68 = ... S T U V W X Y Z A B C  mathematically give each letter a number a b c d e f g h i j k l m n o p q r s t u v w x y z 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25  then c p = = have Caesar ... bottom) otherwise each letter is replaced by the letter in the same row and in the column of the other letter of the pair Security of Playfair Cipher      security much improved over monoalphabetic...

Ngày tải lên: 06/03/2014, 16:20