communicating over the network chapter 2

... khoa - Website: www.bkacad.com Chapter 2 - Communicating over the Network CCNA Exploration 4.0CCNA Exploration 4.0 End Devices and their Role on the Network ã The network devices that people ... Devices and their Role on the Network ã Intermediary devices to provide connectivity and to work behind the scenes to ensure that data flows across the network. ã These devices connect the individual ... set of rules for all networks. ã Using this research, the ISO created a network model that helps vendors create networks that are compatible with other networks. ã The Open System Interconnection...

Ngày tải lên: 12/12/2013, 14:15

Ngày tải lên: 01/04/2014, 12:20

... khoa - Website: www.bkacad.com 28 • Use the subnet mask and ANDing process to extract the network address from the IP address. Network portion and the role of the subnet mask Học viện mạng ... used in the network ã Explain how addresses are assigned to networks by ISPs and within networks by administrators ã Hc vin mng Bỏch khoa - Website: www.bkacad.com 2 ã Determine the network ... block 1 72. 16.0.0 /22 Học viện mạng Bách khoa - Website: www.bkacad.com 36 Calculate address Học viện mạng Bách khoa - Website: www.bkacad.com 17 Testing the Network Layer ã Describe the role...

Ngày tải lên: 22/12/2013, 13:17

Ngày tải lên: 27/06/2014, 16:20

Ngày tải lên: 11/08/2014, 12:21

... 194. 12. 230. 128 /25 5 .25 5 .25 5.1 92 address range: 194. 12. 230. 129 (10 000001) has 194. 12. 230.190 (01 111 110) - 194. 12. 230.1 92/ 255 .25 5 .25 5.1 92 in interconnection network address range: 194. 12. 230.193 ... 194. 12. 230.1 (00 000001) has 194. 12. 230. 62 (00 111110) - Engineers in 194. 12. 230.64 /25 5 .25 5 .25 5.1 92 network address range: 194. 12. 230.65 (01 000001) has 194. 12. 230. 126 (01 111110) - Commercial network ... from 194. 12. 230.130 to 194. 12. 230.140. 1. Propose a mask of sub -network for the network of company. 194. 12. 230.0 is a Class C address, the last byte must be used to encode the numbers of sub-network...

Ngày tải lên: 17/09/2012, 09:13

... compromising the information – A worm or virus could be introduced to the media, potentially damaging the stored information and infecting the network Hardening Network Security Devices ã The final ... activity ã Network- based IDS monitors all network traffic instead of only the activity on a computer – Typically located just behind the firewall ã Other IDS systems are based on behavior: Watch network ... attached to a network (also called a client) – Connected to a LAN and shares resources with other workstations and network equipment – Can be used independently of the network and can have their...

Ngày tải lên: 17/09/2012, 10:43

... năng lượng lớn 1. Trung bình là 22 5W 2. Chi phí cho năng lượng gấp 4 lần Capex 3. Máy chủ tiêu thụ năng lượng tăng 9% mỗi năm 4. Số lượng máy ch tng 50% t 20 05 n 20 10 ã Mỏy ch s dng tài nguyên ... giữa sáng kiến và hiệu quả của nó SAN solution Hp nht vic lu tr ã SAN (Storage Area Network) v NAS (Network Attached Storage) là hai cách để tổ chức lại một hệ thống vào trong một nguồn lưu ... nối sử dụng LAN hoặc WAN) đã phỏt trin theo cp s nhõn nhng nm gn õy ã Qun lý a nn(nh Windows NT đ, UNIX, Novell NetWare, VMS v phn mm c s d liu nh DB2 đ, Oracle, Informix đ, SQL Server) mụi...

Ngày tải lên: 17/09/2012, 10:43

... level Below primary 12. 8 66 .2 21.1 p < 0.001 Primary 18.5 56.8 24 .7 Secondary 22 .8 56.5 20 .6 Tertiary 34.1 44.6 21 .2 Currently married Yes 22 .1 55.5 22 .4 No 22 .2 57.5 20 .3 Self reported health ... 19.9 61.9 18 .2 p < 0.001 Female 23 .9 51.7 24 .4 Age 15 -29 26 .9 57.3 15.8 p < 0.001 30-39 29 .4 50.8 19.7 40-49 24 .1 52. 4 23 .5 50-59 21 .9 56.0 22 .2 60-69 16.5 57.6 25 .9 70+ 12. 7 66.1 21 .3 Education ... Excellent or very good 23 .8 59 .2 17.1 p < 0.001 Good or fair 22 .0 55.8 22 .2 poor 22 .0 55.4 22 .6 Self reported chronic disease status Yes 17.3 57.8 24 .9 p < 0.001 No 23 .8 55.5 20 .6 Chi Ho Chung...

Ngày tải lên: 25/10/2012, 10:06

... asymptomatic without needing ther- apy for the rest of their lives, but asthma remission also does exist ( 12) . The more severe the asthma is in childhood the more likely it is that the disease will persist ... investigations of the maternal medical records at the University Hospital, including PHC data of the statements made by the mid-wife in her records of the check-up of the mothers during the pregnancy ... or in PHC. The asthma diagnosis was set at the Paediatric clinic at the University Hospital for 91.4% of the children in group A and for 95.1% of the children in group NA, the others were...

Ngày tải lên: 26/10/2012, 09:48

... sign before the end of the week. Chúng tôi cần ông ký trong tuần này. Quý bạn đang theo dõi chương trình "Tiếng Anh Thương mại" của đài Úc Châu. Lesson Three: Over the phone‟ Bài ... gets off the phone? Could you ask him to call me To call me To call me? Could you ask him to call me When he gets off the phone? Trần Hạnh hẹn gặp lại bạn trong Bài 4 để tiếp tục theo dõi ... when he gets off the phone? It‟s quite urgent. Vậy cô làm ơn yêu cầu Harvey gọi lại tôi sau khi ông ấy nói chuyện xong được không? Chuyện này hơi gấp cô ạ. Lesson 3: Over the phone Bài...

Ngày tải lên: 19/10/2013, 03:15

... hierarchy. 4 The Network Switching Subsystem The NSS plays the central part in every mobile network. While the BSS pro- vides the radio access for the MS, the various network elements within the NSS assume ... deficiencies in the protocol between the MSC and the VLR forced the manufacturers to implement proprietary solutions. That is the reason the interface between the MSC and the VLR, the B-interface, ... forwards the triplets to the VLR, which uses them as input parameters for authentication and ciphering. The Glossary provides a detailed description of the authentication procedure. 4 .2 Visitor...

Ngày tải lên: 19/10/2013, 03:20

... 100BaseT4 network can be no further apart than 20 5 meters—regardless of whether the nodes are next to each other. The following variants of 100BaseT Ethernet have been defined: 100BaseFX: Runs over ... its LSP, the new version is broadcast and replaces the older versions at each other router. The scheme used to distribute the LSP greatly influences the performance of the routers. These types ... assume that any subnetworks are under the control of network administrators, so that the internet- work administrator can concentrate on the connections between networks rather than those between...

Ngày tải lên: 22/10/2013, 15:15

... 303.470.4800. 125 727 1 12/ 023 00981 simple fact that dirty connectors are the highest cause of poor performance and most likely failure points in the network. Periodic cleaning of the connector ... look at the overhead. But with- out a VAM, it is still an intrusive solution and doesn’t provide a true picture of the network, only the specific point under test. Cost roadblocks Network operators ... without exposing the other fiber to the risk of breaking and tak- ing down service. Many transmission equipment vendors build in performance monitoring functions into their equipment. There is a mistaken notion...

Ngày tải lên: 22/10/2013, 18:15

... your proposal. There are a couple of issues arising from your proposal. Quí bạn đang theo dõi chương trình 'Tiếng AnhThương mại' của Đài Úc Châu. Lesson 4: Over the phone continued ... chuyện qua Điện thoại (tiếp theo) Xin bạn lắng nghe những từ ngữ và mẫu câu mới trong khi tiếp tục theo dõi đoạn hội thoại bằng cả tiếng Anh lẫn tiếng Việt. Hội thoại 2: Edward: …Just one ... website của cơ quan này theo địa chỉ ames.net.au. Thay mặt toàn ban tiếng Việt Đài Úc Châu, TH thân ái chào tạm biệt. END OF LESSON 4 Lesson 4: Over the phone (continued)...

Ngày tải lên: 23/10/2013, 01:15

... traffic. The pattern is carried on the network or circuit under test, then test equipment at the receive point determines whether the transmission is successful (without errors). At this point, the ... granted access to the rear, the other to the front. For example, an ILEC hands off OC- 12 ( 622 -Mbit/sec) optical bandwidth to an Internet service provider (ISP); the ISP will then split that signal ... choosing a VAM is the access to the connectors. Dirty connectors are the highest cause of poor performance and the most likely failure points in the network. Thus, periodic cleaning of the connectors...

Ngày tải lên: 10/12/2013, 16:15

... Nga Sơn – Thanh Hóa March 1, 20 10 http://mba-programming.blogspot.com http://mbaprogram.travellerspoint.com/ Page 1 Trên đỉnh núi của động Từ Thức Over the top of Tu Thuc mountain ... Nga Sơn – Thanh Hóa March 1, 20 10 http://mba-programming.blogspot.com http://mbaprogram.travellerspoint.com/ Page 10 Nga Sơn – Thanh Hóa March 1, 20 10 http://mba-programming.blogspot.com ... Nga Sơn – Thanh Hóa March 1, 20 10 http://mba-programming.blogspot.com http://mbaprogram.travellerspoint.com/ Page 8 Nga Sơn – Thanh Hóa March 1, 20 10 http://mba-programming.blogspot.com...

Ngày tải lên: 12/12/2013, 20:15

... from one end of the fiber to another (see Figure 1). By improving the bend radius of optical fiber, light entering the core is effectively reflected by the cladding back into the core. Instead ... applications. For standard optical fiber, the 1 625 nm to 1550 nm wavelengths are the first to go when the cable is wrapped around a mandrel. Preserving these wavelengths around tighter bends ... refraction than the core, causing light to stay within this core. To achieve tighter bend radii, some constructions change the Mode Field Diameter (MFD) the area across the core of the fiber that...

Ngày tải lên: 21/12/2013, 07:17