... Website: www.bkacad.com 11 NetworkLayer Fields • bits • Indicates version of IP used • IPv4: 010 0; IPv6: 011 0 H c vi n m ng Bách khoa - Website: www.bkacad.com 12 NetworkLayer Fields • • bits Indicates ... www.bkacad.com 13 NetworkLayer Fields • • bits Specifies the level of importance that has been assigned by upper -layer protocol H c vi n m ng Bách khoa - Website: www.bkacad.com 14 NetworkLayer Fields ... Website: www.bkacad.com 17 NetworkLayer Fields • • 13 bits Used to help piece together datagram fragments H c vi n m ng Bách khoa - Website: www.bkacad.com 18 NetworkLayer Fields • bits • Specifies...
... 802 .11 b and 802 .11 g standards IEEE 802 .11 b - Operates in the 2.4 GHz frequency band, speed up to 11 Mbps Longer range and better able to penetrate building structures than devices based on 802 .11 a ... the bandwidth of 802 .11 a IEEE 802 .11 n - Is currently in draft form The proposed standard defines frequency of 2.4 Ghz or GHz The typical expected data rates are 10 0 Mbps to 210 Mbps with a distance ... 802 . 15 - Wireless Personal Area Network (WPAN) standard, commonly known as "Bluetooth", uses a device pairing process to communicate over distances from to 10 0 meters • Standard IEEE 802 .16 -...
... Transport layer protocol H c vi n m ng Bách khoa - Website: www.bkacad.com 10 TCP Header format: H c vi n m ng Bách khoa - Website: www.bkacad.com 11 TCP Header format: Port number • Source Port 16 ... ng Bách khoa - Website: www.bkacad.com Transport Layer Role and Services • Major functions of the transport layer and the role it plays in data networks – Tracking the individual communication ... Website: www.bkacad.com Transport Layer Role and Services • Explain the purpose of the Transport layer • Enables multiple applications • • to communicate over the network at the same time on a single...
... First Look Network 19 2 .16 8 .1. 0/24 Network 19 2 .16 8.2.0/24 19 2 .16 8 .1. 254 /24 C 19 2 .16 8.2.0/24 is direction connected, FastEthernet0 /1 Routers know about: Directly connected networks (C): Network addresses ... that network This is just like a host that is configured with an IP address/mask (coming) 17 -Jul -12 CCNA Exploration Semester 34 Routing – First Look Network 19 2 .16 8 .1. 0/24 Network 19 2 .16 8.2.0/24 ... decimal Network part then host part Here network part (prefix) is 24 bits /24 Length of network part can vary 17 -Jul -12 CCNA Exploration Semester 27 Message to same network 17 -Jul -12 CCNA Exploration...
... thay đổi từ → ∞ Ví dụ: Nghiệm phương trình đặc trưng K thay đổi 1+ K System and Control s+3 =0 ( s + 1) ( s + 2)( s + 4)( s + 5) Ngo Quang Hieu Phương pháp quỹ đạo nghiệm số Định nghĩa Ví dụ:...
... Overview • • • • • • Describe how networks impact our daily lives Describe the role of data networking in the human network Identify the key components of any data network Identify the opportunities ... computer data networks each have their own individual versions of the four basic network elements H c vi n m ng Bách khoa - Website: www.bkacad.com Converged Networks Converged networks • Technology ... these disparate networks onto one platform - a platform defined as a converged network H c vi n m ng Bách khoa - Website: www.bkacad.com Converged Networks • • Intelligent Information Networks: The...
... URL:http://mike.passwall.com/networking/netmodels/isoosi7layermodel.html [4] R Feig, “The OSI Reference Model”, Date Unknown, URL:http://www2.rad.com/networks /19 94 /osi/ osi.htm [5] H S Ha, OSILayer , 2000 URL:http://userpages.umbc.edu/~hha1 /network/ protocol.html ... Delhi, IN Feb 11 , 2 013 - Feb 22, 2 013 Live Event SANS Scottsdale 2 013 Scottsdale, AZUS Feb 17 , 2 013 - Feb 23, 2 013 Live Event SANS Belgium 2 013 Brussels, BE Feb 18 , 2 013 - Feb 23, 2 013 Live Event ... 2 013 - Mar 09, 2 013 Live Event SANS 2 013 Orlando, FLUS Mar 08, 2 013 - Mar 15 , 2 013 Live Event SANS Secure Canberra 2 013 Canberra, AU Mar 18 , 2 013 - Mar 23, 2 013 Live Event SANS Monterey 2 013 ...
... Figure 19 .2 Finding the classes in binary and dotted-decimal notation 19 .12 Example 19 .4 Find the class of each address a 000000 01 000 010 11 000 010 11 111 011 11 b 11 0000 01 10000 011 00 011 011 11 111 111 ... Example 19 .5 the /28 can be represented as 11 111 111 11 111 111 11 111 111 11 110 000 (twenty-eight 1s and four 0s) Find a The first address b The last address c The number of addresses 19 .27 Example 19 .9 ... 0 010 011 1 If we set 32 − 28 rightmost bits to 1, we get 11 0 011 01 00 010 000 0 010 010 1 0 010 111 1 or 2 05 .16 .37.47 This is actually the block shown in Figure 19 .3 19 .24 Note The number of addresses in the...
... Internet as a Datagram Network Internet as a Connectionless Network 20.2 Figure 20 .1 Links between two hosts 20.3 Figure 20.2 Networklayer in an internetwork 20.4 Figure 20.3 Networklayer at the source, ... 20 -1 INTERNETWORKING In this section, we discuss internetworking, connecting networks together to make an internetwork or an internet Topics discussed in this section: Need for NetworkLayer ... Maximum transfer unit (MTU) 20. 25 Table 20 .5 MTUs for some networks 20.26 Figure 20 .10 Flags used in fragmentation 20.27 Figure 20 .11 Fragmentation example 20.28 Figure 20 .12 Detailed fragmentation...
... address The result is 18 0.70. 65 .12 8, which does not match the corresponding network address The second mask (/ 25) is applied to the destination address The result is 18 0.70. 65 .12 8, which matches ... has 256 addresses, and the mask is / 24 There is a sense of hierarchy in this configuration All routers in the Internet send a packet with destination address 12 0 .14 .64.0 to 12 0 .14 .12 7. 255 to ... Example 22 .1 Make a routing table for router R1, using the configuration in Figure 22.6 Solution Table 22 .1 shows the corresponding table 22 .10 Figure 22.6 Configuration for Example 22 .1 22 .11 Table...
... these disparate networks onto one platform - a platform defined as a converged network 34 Converged Networks 35 Architecture of the Internet Network Architecture A fault tolerant network is one ... the establishment of operation policies and procedures related to the network. ” 30 Devices on a network 31 Network Medium 32 Network Applications and Protocols Some other applications: DNS, DHCP, ... changing to keep up with the evolution of this global networkNetwork Centric World Using Networks in our lives Using Networks in our work Networks are no longer just a luxury, but a necessity...