... compatibility with 802 .11 b? A B C D 802 .11 a 802 .1q 802 .11 g 802 .11 p Answer: C QUESTION NO: 73 Leading the way in IT testing and certification tools, www.testking.com - 26 - 642 - 8 71 TestKing is a ... assurance Answer: A, B, D, F QUESTION NO: 64 What is the device weight limit per CallManager in a Cisco IP phone configuration? A B C D 2 500 300 0 500 0 6 500 Answer: C QUESTION NO: 65 Which of the ... than 15 00 bytes Turn off pre-fragmentation for IPSec Set the MTU value to 14 00 bytes Answer: C, D QUESTION NO: 50 Leading the way in IT testing and certification tools, www.testking.com - 19 - 642 ...
... improve the quality of life for people everywhere H c vi n m ng Bách khoa - Website: www.bkacad.com Examples of Today’s Popular Communication Tools • The existence and broad adoption of the Internet ... complexity of the network and the number of devices a message must pass through on its route to its final destination External factors affecting the success of communication include: – The quality ... Traditional telephone, radio, television, and 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...
... www.bkacad.com 11 Network Layer Fields • bits • Indicates version of IP used • IPv4: 010 0; IPv6: 0110 H c vi n m ng Bách khoa - Website: www.bkacad.com 12 Network Layer Fields • • bits Indicates datagram ... www.bkacad.com 10 IPv4 packet header • Identify the major header fields in the IPv4 protocol and describe each field's role in transporting packets H c vi n m ng Bách khoa - Website: www.bkacad.com 11 Network ... www.bkacad.com 16 Network Layer Fields • bits(R, DF MF) – R(reserved): set to – DF(Don’t fragment): • 0: Fragment if necessary • 1: Do not fragment – MF(More fragment): • 0: This is the last fragment • 1: ...
... 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 bits • Destination Port 16 bits H c vi n m ng ... www.bkacad.com 43 Labs H c vi n m ng Bách khoa - Website: www.bkacad.com 44 Summary H c vi n m ng Bách khoa - Website: www.bkacad.com 45 H c vi n m ng Bách khoa - Website: www.bkacad.com 46 ... www.bkacad.com 41 UDP Protocol • Describe in detail the process specified by the UDP protocol to reassemble PDUs at the destination device H c vi n m ng Bách khoa - Website: www.bkacad.com 42 UDP Protocol...
... Sum: 11 001010110010 10 1s complement: 0011010 10 0110101 Total: 11 111 111 111 111 11 UDP checksum provides error detection, any changed bits or missing segments Simplified explanation (see RFC 10 71 for ... 15 16 Client Server 31 16-bit Source Port Number 16 -bit Destination Port Number 16 -bit UDP Length 16 -bit UDP Checksum Time Data (if any) Cumulative Sum: 11 001010110010 10 1s complement: 0011000100110101 ... 11 001010110010 10 1s complement: 0011000100110101 Total: 11 111 011 111 111 11 What if there is an error? UDP does nothing to recover the error It is up to the application layer protocol (example TFTP) to decide...
... Hypertext Transfer Protocol (HTTP) - TCP Port 80 – Simple Mail Transfer Protocol (SMTP) - TCP Port 25 – Post Office Protocol (POP) - UDP Port 11 0 – Telnet - TCP Port 23 – Dynamic Host Configuration ... - Website: www.bkacad.com DNS - Example H c vi n m ng Bách khoa - Website: www.bkacad.com DNS - Example H c vi n m ng Bách khoa - Website: www.bkacad.com DNS - Example H c vi n m ng Bách khoa ... - Website: www.bkacad.com DNS - Example H c vi n m ng Bách khoa - Website: www.bkacad.com DNS - Example H c vi n m ng Bách khoa - Website: www.bkacad.com DNS - Example H c vi n m ng Bách khoa...
... vi n m ng Bách khoa - Website: www.bkacad.com The Sending and Receiving Process • Step 1: (Refer to 2 .4. 6 .1) H c vi n m ng Bách khoa - Website: www.bkacad.com The Sending and Receiving Process ... Model • The first layered protocol model for internetwork communications was created in the early 19 70s and is referred to as the Internet model H c vi n m ng Bách khoa - Website: www.bkacad.com ... Step 9: H c vi n m ng Bách khoa - Website: www.bkacad.com The Sending and Receiving Process • Step 10 : H c vi n m ng Bách khoa - Website: www.bkacad.com OSI model • • • • To address the problem of...
... Media Required to Make a LAN Connection Speed and Types of Ports/Interfaces • The speed : 10 / 10 0 / 10 00 Mbps Can increased speeds without replacing the devices • The number and type of ports: – ... ports? • The number of UTP ports and fiber ports will be needed The number of Gbps ports and 10 / 10 0 Mbps ports H c vi n m ng Bách khoa - Website: www.bkacad.com Basic Network Media Required to ... • Total Cable Length – Attenuation phenomenon – For UTP: spans four areas, maximum distance is 10 0 meters per channel Up to meters of patch cable for interconnecting patch panels as well as cable...
... Preamble is used for timing synchronization in the asynchronous 10 Mbps and slower implementations of 10 1010 11 10 1010 11 Ethernet Faster versions of Ethernet are synchronous, and this timing information ... Mbps per wire pair to 12 5 Mbps per wire pair, or 500 Mbps for the four pairs Each wire pair signals in full duplex, doubling the 500 Mbps to 10 00 Mbps • 10 00 BASE-T uses 4D-PAM5 line encoding ... Ethernet Physical Layer • 10 00 BASE-T (IEEE • • 802 .3ab) was developed to provide additional bandwidth 10 00 BASE-T (CAT 5e) standard is interoperable with 10 BASE-T and 10 0BASE-TX (Fast Ethernet was...
... 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 IEEE 802 .11 g ... 2 .4 GHz frequency band, speed up to 54 Mbps Devices implementing this standard therefore operate at the same radio frequency and range as 802 .11 b but with the bandwidth of 802 .11 a IEEE 802 .11 n ... code bits that are interpreted and mapped as data bit patterns For example, code bits 10 101 could represent the data bits 0011 • Code groups are often used as an intermediary encoding technique...
... www.bkacad.com 40 Follow Data Through an Internetwork H c vi n m ng Bách khoa - Website: www.bkacad.com 41 Follow Data Through an Internetwork H c vi n m ng Bách khoa - Website: www.bkacad.com 42 Follow ... device then sends the data • This method is used by 802 .11 wireless networking technologies H c vi n m ng Bách khoa - Website: www.bkacad.com 18 Media Access Control for Non-Shared Media • • • ... Website: www.bkacad.com 11 Standards H c vi n m ng Bách khoa - Website: www.bkacad.com 12 Media Access Control Techniques H c vi n m ng Bách khoa - Website: www.bkacad.com 13 Placing Data on the...