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networking fundamentals topic 109 1

Computer networks    networking fundamentals

Computer networks networking fundamentals

Phần cứng

... connection 7 /19 /2008 11 Networking devices (cont.) 7 /19 /2008 12 Networking devices (cont.) Cisco 15 03 Micro Hub 7 /19 /2008 13 Networking devices (cont.) Cisco Catalyst 19 24 Switch 7 /19 /2008 14 Networking ... user networks over large geographic areas 7 /19 /2008 Network history 7 /19 /2008 Network history (cont.) 7 /19 /2008 Network history (cont.) 7 /19 /2008 Networking devices Equipment that connects directly ... manage a network networking technology could increase productivity while saving money In the mid -19 80s, each company that created network hardware and software used its own 7 /19 /2008 Data networks...
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networking fundamentals exam 98-366

networking fundamentals exam 98-366

Kỹ thuật lập trình

... 14 1, 048,574 19 255.248.0.0 /13 30 524,286 18 255.252.0.0 /14 62 262 ,14 2 17 255.254.0.0 /15 12 6 13 1,070 16 255.255.0.0 /16 254 65,534 15 255.255 .12 8.0 /17 510 32,766 10 14 255.255 .19 2.0 /18 1, 022 ... 1, 022 16 ,382 11 13 255.255.224.0 /19 2,046 8 ,19 0 12 12 255.255.240.0 /20 4,094 4,094 13 11 255.255.248.0 / 21 8 ,19 0 2,046 14 10 255.255.252.0 /22 16 ,382 1, 022 15 255.255.254.0 /23 32,766 510 16 255.255.255.0 ... Figure 1- 17 VLAN Switch Example of a port-based VLAN ` ` ` ` Classroom 19 2 .16 8 .1. 0 ` ` ` ` Classroom 19 2 .16 8.2.0 ` ` ` ` Classroom 19 2 .16 8.3.0 ` ` ` Library 19 2 .16 8.4.0 ` ` ` Staff 19 2 .16 8 .10 0.0...
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CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 1 pps

CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 1 pps

Chứng chỉ quốc tế

... using cables that are only a couple of meters long 0945_01f.book Page 11 Wednesday, July 2, 2003 3:53 PM Perspectives on Networking 11 Bam Bam happens by and sees that Pebbles is stressed Pebbles ... well—you are going to be finished soon, right?” 0945_01f.book Page 10 Wednesday, July 2, 2003 3:53 PM 10 Chapter 1: Introduction to Computer Networking Concepts So much for using first names for ... computer is typically connected to a network via some cable Figure 1- 1 shows the basic end-user perspective of networking Figure 1- 1 End-User Perspective on Networks Home User PC with Modem Office...
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CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 2 ppsx

CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 2 ppsx

Chứng chỉ quốc tế

... Destination: 1. 1 .1. 1 Source: 2.2.2.2 Bob sends the packet to R2, which makes a routing decision R2 chooses to send the packet to R1 because the destination address of the packet is 1. 1 .1. 1, and R1 knows ... topology to know that 1. 1 .1. 1 (Larry) is on the other side of R1 Similarly, when R1 gets the packet, it forwards the packet over the Ethernet to Larry And if the link between R2 and R1 fails, IP allows ... source 0945_01f.book Page 27 Wednesday, July 2, 2003 3:53 PM The TCP/IP Protocol Architecture Figure 2-4 27 IP Services Provided to TCP Bob - 2.2.2.2 Larry - 1. 1 .1. 1 HTTP GET R2 TCP R1 IP R3 HTTP...
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CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 3 pptx

CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 3 pptx

Chứng chỉ quốc tế

... and a trailer? 10 If a Fast Ethernet NIC currently is receiving a frame, can it begin sending a frame? 11 What are the two key differences between a 10 -Mbps NIC and a 10 /10 0 NIC? 12 What is the ... collide All devices on a 10 BASE2, 10 BASE5, or 10 BASE-T network using a hub risk collisions between 0945_01f.book Page 61 Wednesday, July 2, 2003 3:53 PM Early Ethernet Standards 61 the frames that they ... 3 -11 , which shows the full-duplex circuitry used with a single PC cabled to a LAN switch 0945_01f.book Page 63 Wednesday, July 2, 2003 3:53 PM Ethernet Data-Link Protocols Figure 3 -11 63 10 BASE-T...
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CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 4 ppt

CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 4 ppt

Chứng chỉ quốc tế

... EIA/TIA-232 Distance (Meters) EIA/TIA-449, V.35, X. 21, EIA-530 2400 60 12 50 4800 30 625 9600 15 312 19 ,200 15 15 6 38,400 15 78 11 5,200 3.7 — T1 (1. 544 Mbps) — 15 Many Cisco routers support serial interfaces ... kbps T1 DS1 1. 544 Mbps (24 DS0s, plus kbps overhead T3 DS3 44.736 Mbps (28 DS1s, plus management overhead) E1 ZM 2.048 Mbps (32 DS0s) E3 M3 34.064 Mbps (16 E1s, plus management overhead) J1 Y1 2.048 ... 0945_01f.book Page 10 1 Wednesday, July 2, 2003 3:53 PM Packet-Switching Services Table 4-8 10 1 SONET Link Speeds Optical Carrier Speed* OC -1 52 Mbps OC-3 15 5 Mbps OC -12 622 Mbps OC-48 2.4 Gbps OC -19 2...
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CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 5 pptx

CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 5 pptx

Chứng chỉ quốc tế

... Hannah MAC IP 0200 .11 11. 111 1 10 .1. 1 .1 0200 .12 34.5678 10 .1. 1.2 0200.5432 .11 11 10 .1. 1.3 RARP Reply IP: ?.?.?.? MAC: 0200 .11 11. 111 1 Hey Everybody! My MAC Address Is 0200 .11 11. 111 1 If You Are a RARP ... Address! Your IP Address Is 10 .1. 1.2 BOOTP Configuration MAC IP Gateway 0200 .11 11. 111 1 10 .1. 1 .1 10 .1. 1.200 0200 .12 34.5678 10 .1. 1.2 10 .1. 1.200 0200.5432 .11 11 10 .1. 1.3 10 .1. 1.200 Hannah BOOTP Broadcast ... 5 -14 Router A Advertising Routes Learned from Router C Router A 16 2 .11 .5.0 16 2 .11 .8 .1 Routing Update To0 s0 s1 16 2 .11 .9.0 Routing Update 16 2 .11 .10 .0 16 2 .11 .5.0 16 2 .11 .9.0 16 2 .11 .8.0 16 2 .11 .10 .0...
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CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 6 pptx

CCNA INTRO Exam Certification Guide - Part 1 Networking Fundamentals - Chapter 6 pptx

Chứng chỉ quốc tế

... Port 10 25 Port 10 28 Port 10 30 UDP Ad Wire Web Application Application Server Port 800 Port 20 ,10 0 Port 80 UDP TCP IP Address 10 .1. 1.2 IP Address 10 .1. 1 .1 (10 .1. 1 .1, TCP, 10 30) (10 .1. 1 .1, TCP, 10 28) ... (10 .1. 1 .1, TCP, 10 28) (10 .1. 1 .1, UDP, 10 25) TCP (10 .1. 1.2, TCP, 80) (10 .1. 1.2, TCP, 2 010 0) (10 .1. 1.2, UDP, 800) 0945_01f.book Page 15 4 Wednesday, July 2, 2003 3:53 PM 15 4 Chapter 6: Fundamentals of ... 0945_01f.book Page 15 1 Wednesday, July 2, 2003 3:53 PM The Transmission Control Protocol Figure 6 -1 1 51 TCP Header Fields Bit 15 Bit Bit 16 Source Port (16 ) Bit 31 Destination Port (16 ) Sequence...
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networking fundamentals

networking fundamentals

Quản trị mạng

... Cú pháp file:   IP addressFully.Qualified.Name[host_alias]* 19 2 .16 8 .1. 10 centos -1. nhatnghe.com centos -1  Các ứng dụng trước tiên sử dụng file cần truy vấn máy tính tên File /etc/sysconfig/network ... ifconfig dùng để cấu hình địa IP, netmask, địa broadcast tham số cấu hình khác   ifconfig eth0 19 2 .16 8 .1. 10 netmask 255.255.255.0 man ifconfig  Lệnh ifconfig cấu hình cho card mạng (từng interface) ... file, dùng ethereal để phân tích gói tin, xác định loại traffic, tìm kiếm dấu hiệu mong muốn 10 Hỏi & Đáp 11 ...
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Fundamentals-of-wimax-understanding-broadband-wireless-networking

Fundamentals-of-wimax-understanding-broadband-wireless-networking

Điện - Điện tử

... 5.9 .1 Switching Between Diversity and Multiplexing 5.9.2 Multiuser MIMO Systems Chapter 14 5 14 5 15 0 15 0 15 2 15 3 15 4 15 4 15 5 15 6 15 7 15 8 16 0 16 4 16 9 17 0 17 1 17 4 17 4 17 9 18 1 18 2 18 2 18 3 18 4 18 5 18 6 ... Systems 11 4 11 7 11 7 11 7 11 9 12 2 12 2 12 3 12 4 12 6 12 7 13 0 13 1 13 1 13 2 13 5 14 0 14 2 14 4 xiv Contents 4.8 Summary and Conclusions 4.9 Bibliography Chapter Multiple-Antenna Techniques 14 9 5 .1 The Benefits ... Chapter 79 82 84 86 87 90 91 91 95 99 10 4 10 5 10 7 10 8 10 9 11 0 11 0 11 0 Orthogonal Frequency Division Multiplexing 11 3 4 .1 Multicarrier Modulation 4.2 OFDM Basics 4.2 .1 Block Transmission with Guard...
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Spinal Disorders: Fundamentals of Diagnosis and Treatment Part 109 pps

Spinal Disorders: Fundamentals of Diagnosis and Treatment Part 109 pps

Sức khỏe người cao tuổi

... Stuttgart, pp 319 – 327 10 5 Weber U, Pfirrmann CW, Kissling RO, Hodler J, Zanetti M (2007) Whole body MR imaging Chapter 38 10 85 10 86 Section Tumors and Inflammation 10 6 10 7 10 8 10 9 11 0 in ankylosing ... Combined 1. 5 % 0.2 % 0.3 % 1. 4 % 0.3 % 0.3 % 0.0 % 1. 0 % 1. 3 % 0 .1 % 0.6 % 0.2 % 0.2 % 0 .1 % 3.5 % 1. 4 % 0.3 % 1. 0 % 0 .1 % 0 .1 % 0.0 % In a French deformity surgery cohort, 90 % scoliosis, 10 % kyphosis ... spinal surgery 0.2 % 1. 1 % 1. 6 % Coe et al (2006) [ 21] ) hip arthroplasty 1. 0 % 1. 3 % 0.2 % Mahomed et al (2003) [73] Schmalzried et al (19 91) [10 2] ) knee arthroplasty 0.6 % 1. 3 % 0.4 % Katz et...
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CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 109 pps

CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 109 pps

Chứng chỉ quốc tế

... 11 02.book Page 10 50 Tuesday, May 20, 2003 2:53 PM 10 50 cabling STP, 12 4 12 5 UTP, 12 5 12 7 cutover, 9 51 fiber-optic, 14 1 absorption, 15 0 cladding, 14 2 core, 14 3 dispersion, 15 0 duplex fiber, 14 1 ... Ethernet 10 57 cable installation safety, 907– 910 circuits, 12 1 current, 12 0 impedence, 12 1 resistance, 12 0 viewing electrical signals, 18 8 voltage, 11 9 wattage, 12 0 electromagnetic spectrum, 13 4 radio ... noise, sources of, 19 1, 19 6 19 8 shielding, 19 2 signaling, 19 2 terminating, 936–938 twisted-pair cabling STP, 12 4 12 5 UTP, 12 5, 12 7 copying images with TFTP, 660–6 61 core, 14 3 corrupt Flash images,...
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Networking Theory and Fundamentals - Lecture 11 pot

Networking Theory and Fundamentals - Lecture 11 pot

Quản trị mạng

... conditions ]} Dik ≤ Dik -1 for all k ≤ h so that h +1 h h 1 h Di = D j + d ij ≤ D j + d ij = Di j [ ] Dih ≤ Di1 = di1 = di1 + D1h j [ ] shortest (≤ h + 1) walk length = min{ , min[D + d ]} D Combining ... cycles without node 1, and it yields the shortest path lengths to node 18 h j Proof of Bellman-Ford (1) Proof is by induction on hop count h For h = we have Di1 = di1 for all i ≠ 1, so the result ... B Walk: sequence of nodes (n1, n2, …, nk), where (n1, n2), (n2, n3), …, (nk -1, nk) are arcs Path: a walk with no repeated nodes Cycle: a walk (n1, n2, …, nk), with n1=nk and no other repeated...
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Networking Theory and Fundamentals - Lectures 9 & 10 pps

Networking Theory and Fundamentals - Lectures 9 & 10 pps

Quản trị mạng

... averages of these times: 1 W2 = R + Q1 + Q2 + λ1W2 1 µ2 1 1 λ1W1 + λ 2W2 + λ1W2 1 µ2 1 Solving for W2 and using the expression for W1 : R W2 = (1 − 1 ) (1 − 1 − ρ2 ) =R+ 10 -30 Non-Preemptive ... p)n np np (1 ¡ p) (1 ¡ p)k 1 p k = 1; 2; : : : pet 1 (1 p)et p 1 p p2 r p r (1 p) p2 ¸ ¸ ¡n¢ k Geometric p Negative Bin (r; p) Moment Gen Fun MX (t) ³ k 1 r 1 ´ r (1 k¡r p ¡ p) k = r; r + 1; : : : ... terms: Tk = Rk + + Tk ( 1 + µ k − 1 − − ρ k Final solution: Tk = + ρ k 1 ) (1/ µ k ) (1 − 1 − − ρk ) + Rk (1 − 1 − − ρk 1 ) (1 − 1 − − ρ k ) where: k Rk = ∑ λ i X i2 i =1 ...
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Networking Theory and Fundamentals - Lecture 8 potx

Networking Theory and Fundamentals - Lecture 8 potx

Quản trị mạng

... ∑ n n 11 ρ22 ρ nk k ∑ n n 11 ρ22 ρ nk + k n1 + + nk = M = n1 + + nk = m nk = = ∑ n1 + + nk 1 = m n n 11 ρ22 ∑ n1 + + nk = m nk > ρnk− 1 + k n n 11 ρ 22 ∑ n1 + + nk = m nk > n n 11 ρ 22 ... mK = M mi′ +1> = n 11 ∑ ρini 1 ρnK K m1 1 ρimi′ m1 +…+ mi′ +…+ mK = M 1 mi′≥ ρ mK K ρ mK K = n 11 ρini 1 ρ nK K G ( M − 1) This is the probability of state ( n1 ,…, ni − 1, … nK ) in an identical ... 11 ∑ m∈F ( M ) mi > ρini m 1 ρ nK K ρimi ρ mK K Changing index mi = mi′ + 1, mi′ ≥ in the sum in the denominator: αij ( n ) = ∑ n 11 ρini ρnK K m1 1 ρimi′ +1 m1 +…+ mi′ +1+ …+ mK = M mi′ +1> ...
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Networking Theory and Fundamentals - Lecture 7 doc

Networking Theory and Fundamentals - Lecture 7 doc

Quản trị mạng

... leaves with probability 1- p Composite arrival rate and steady-state distribution: λ′ = λ + λ′r 11 = λ + λ′p ⇒ λ′ = λ / (1 − p ) p( n ) = (1 − ρ)ρ n , n ≥ 0; ρ = λ ′ / µ = λ / (1 − p )µ Probability ... 1{ ni > 0} + ∑ µi ri 01{ ni > 0} ij m ≠n i i, j i i i i i = ∑ γ i + ∑ µi [∑ rij + ri ] ⋅ 1{ ni > 0} j = ∑ γ i + ∑ µi 1{ ni > 0} ∑ q* (n, m) = ∑ γ* + ∑ µi1{ni > 0} = ∑ λ i ri + ∑ µi1{ni > 0} i m ≠n i ... distribution of the network is K p( n ) = ∏ pi ( ni ), n1 ,…, nK ≥ i =1 where for every node i =1, 2,…,K pi ( ni ) = (1 − ρi )ρin , ni ≥ k 1 rik j rij i i γi ri 8-6 Jackson’s Theorem (proof) Guess...
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Networking Theory and Fundamentals - Lecture 6 pot

Networking Theory and Fundamentals - Lecture 6 pot

Quản trị mạng

...  1 03 n2 λ2 Detailed Balance Equations: 1 p( n1 + 1, n2 ) = 1 p( n1 , n2 ) µ2 p( n1 , n2 + 1) = λ2 p( n1 , n2 ) 1 13 µ2 1 1 λ2 02 λ2 23 µ2 µ2 1 λ2 1 1 λ2 µ2 1 1 00 1 1 λ2 µ2 1 µ2 ... λ2 µ2 1 µ2 1 1 λ2 µ2 31 1 λ2 µ2 1 20 1 µ2 32 1 λ2 1 21 10 1 µ2 λ2 11 µ2 33 22 1 λ2 1 12 01 Verify that the Markov chain is reversible – Kolmogorov criterion 1 λ2 µ2 30 1 6-24 Truncation ... n1 , n2 ) : ( n1 − 1) + + ( n2 − 1) + ≤ B} Distribution of truncated chain: 1 03 λ2   n p(0,0) =  ∑ ρ1n1 ρ 2   ( n1 ,n2 )∈E  µ2 λ2 1 λ2 µ2 1 1 λ2 01 22 µ2 1 1 λ2 11 µ2 1 00 λ2 1 31...
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Networking Theory and Fundamentals - Lecture 4 & 5 doc

Networking Theory and Fundamentals - Lecture 4 & 5 doc

Quản trị mạng

... distribution pn = n (1 ), n = 0 ,1, n +1 4&5-7 The M/M /1 Queue Average number of customers in system n =0 n =0 N = npn = (1 ) n = (1 ) n n N = (1 ) n n =0 = = (1 ) Littles ... empty =1/ 3, T =1 N=T/ =1/ 3 p1 =1/ 3 Example 2: LAA violated Poisson arrivals Service time of customer i: Si= Ti +1, < Upon arrival: system is always empty Average time the system has customer: p1= ... (k) (t) = MSi (t)MSi 1 (t) : : : MSiĂk +1 (t)MRiĂk (t) = i Then: MTi (t) = X ảk +1 k=0 = ạĂt (1 Ă ẵ)ẵk = (1 Ă ẵ) ạĂá ạĂá = (ạ Ă á) Ă t Ă t Ă ạĂt ạĂt ạĂt ảk +1 X ảk k=0 ạĂt 4&5- 41 Moment Generating...
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Networking Theory and Fundamentals - Lecture 3 ppt

Networking Theory and Fundamentals - Lecture 3 ppt

Quản trị mạng

... q (1 − p) (1 − p) (1 − q) + pq p (1 − q) p p (1 − q) n q (1 − p) (1 − p) (1 − q) + pq n +1 3-20 Example: Discrete-Time Queue p p (1 − q) p (1 − q) (1 − p) q (1 − p) q (1 − p) (1 − p) (1 − q) + pq π p = π1q (1 ... π1q (1 − p) ⇒ 1 = Define: ρ ≡ p / q, α ≡ n q (1 − p) (1 − p) (1 − q) + pq p/q π0 1 p π n p (1 − q ) = π n +1q (1 − p) ⇒ π n +1 = p (1 − q ) q (1 − p) p (1 − q) p (1 − q ) πn , n ≥ q (1 − p) ρ  π0 1 = ... µn µn µn 1 µn µn 1 1 i = µi +1 1 ∞ n 1 ∞ n 1 ∞ n 1   λi  λi  λ = ⇔ p0 = 1 + ∑ ∏ pn = ⇔ p0 1 + ∑ ∏ , if ∑ ∏ i < ∞ ∑   n=0 n =1 i = µi +1  n =1 i = µi +1  n =1 i = µi +1   ∞ Use...
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Networking Theory and Fundamentals - Lecture 2 potx

Networking Theory and Fundamentals - Lecture 2 potx

Quản trị mạng

... pmf: P fX1 = k1; X2 = k2g = = P fX1 = k1; X2 = k2 jX = k1 + k2g P fX = k1 + k2g ³k + k ´ ¸k1+k2 k1 k2 ¡¸ = p p2 ¢ e k1 (k1 + k2)! (¸p1)k1 (¸p2)k2 ¢ e¡¸(p1+p2) = k1 !k2! k1 k2 ¡¸p1 (¸p1 ) ¡¸p2 ... Fun P fX = kg ¡n¢ pk (1 ¡ p)n¡k k k = 0; 1; : : : ; n Poisson ¸ Mean E[X] Variance Var(X) (pet + ¡ p)n np np (1 ¡ p) pet 1 (1 p)et p 1 p p2 r p r (1 p) p2 ¸ ¸ k 1 (1 ¡ p) p k = 1; 2; : : : Geometric ... k1 !k2! k1 k2 ¡¸p1 (¸p1 ) ¡¸p2 (¸p2 ) ¢e = e k1 ! k2! ² X1 and X2 are independent k1 k2 ² P fX1 = k1g = e¡¸p1 (¸p1!) , P fX2 = k2g = e¡¸p2 (¸p2!) k1 k2 Xi follows Poisson distribution with parameter...
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