This type of twisted pair cable consists of twisted pair wires that are not only individually insulated but also surrounded by a shielding made of foil. a- STP B- UTP C-UTPA D-STPE What are the two general types of fiber optic cable found in current networking environments? A Red and Green B- Single mode and Multimode C-High-frequency and Low-frequency D- Narrowband and Wideband In a star network a- Each device is connected to a switch or hub b- Each device connects to each other c- Each device is connected in a line d- Each device is connected to a terminal

This type of twisted pair cable consists of twisted pair wires that are not only individually insulated but also surrounded by a shielding made of foil. a- STP B- UTP C-UTPA D-STPE What are the two general types of fiber optic cable found in current networking environments? A Red and Green B- Single mode and Multimode C-High-frequency and Low-frequency D- Narrowband and Wideband In a star network a- Each device is connected to a switch or hub b- Each device connects to each other c- Each device is connected in a line d- Each device is connected to a terminal

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter8: Data And Network Communication Technology

Section: Chapter Questions

Problem 2PE

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167. Which of the following statements is correct? a. characteristic of LAN is unlimited expansion b. characteristic of LAN is low cost access for low bandwidth channels c. characteristic of the hub architecture of ARC-net is alternative routing d. characteristic of the hub architecture of ARC-net is directionalized transmission
8. Answer the questions below based on the given network topology: (a) How many collision domains are there? (b) How many broadcast domains are there? (c) What type of cable (straight-through or crossover) is required to connect PCO and Switch0? (d) What type of cable (straight-through or crossover) is required to connect two PCs? (e) If PCO wishes to discover the MAC address of PC1, which network protocol should be utilized?
Discuss any two constraints of computer networks based on shared media with the aid of suitable illustrations.Are there any differences between half duplex traditional Ethernet, half duplex fast Ethernet, and half duplex gigabit Ethernet in terms of slot time and maximum network diameter? Explain!If a company has a single Fast Ethernet hub, it may divide its network into three Fast Ethernet hubs linked by one Fast Ethernet switch to form a Fast Ethernet LAN. Are split networks more efficient than their original counterparts? With the aid of a suitable diagram, explain.
3. (a) The Bluetooth device has a limitation of devices connecting to a network. How to increase the network size of a BT network? (b) In the illustration, the J router updates its routing. Do you know how? If another new router is added to the same network named X and delay from G, H and D is 6, 12,18 respectively. Show the routing table of X.
. Which of the following is a characteristic of unshielded twisted-pair cabling? (Choose all that apply.) a. Consists of four wires b. Commonly used in physical bus topologies c. Has a distance limitation of 100 meters d. Susceptible to electrical interference
Subject code - rcs509 Correct answer will be appreciated , else downvoted. Consider a 10 km long broadcast LAN has 10^10 bps bandwidth and uses CSMA/CD. The signal travels along the wire at 2.5 x 10^8 m/s. What is the minimum packet size that can be used on this network?
A 1-km-long, 10-Mbps CSMA/CD LAN (i.e., Classic Ethernet)has a propagation speed of 200 m/μsec (i.e., how fast the radio signal moves on the link). Thereare no repeaters in this system. Data frames are 512 bits long, including 480 bits of payload (i.e.,effective data) and 32 bits of overhead (e.g., header, checksum, and other overhead fields). Everydata frame should be confirmed by a 64-bit ACK frame. We assume the sender needs to use onecontention slot to seize the channel before transmitting the data frame, and the receiver needsto use one contention slot to seize the channel before transmitting the ACK frame. Answer thefollowing questions: a. What is the minimum length of a contention slot in μsec? b. What is the effective data rate for the sender to send one data frame? Assume that there areno collisions. Show the calculation c. What would be the impact on the total delay and the effective data rate if we used a longerdata payload size in the data frame? Given one application…
H2. Consider designing a 2 km-long, 1 Gbps LAN which uses CSMA/CD and has a propagation speed of 200 m/µsec. What is the minimum frame size and the optimal channel efficiency that can be achieved using this frame size?
7.a. How many wavelengths are usually leased in a lit fiber lease agreement over two fibers?A. FourB. TwoC. OneD. Three7.b. When replacing a section of cable, the _______ must be less than the optical budget in the fiber link.A. attenuationB. insertion lossC. splice lossD. total loss
Assume a 10Mbps Ethernet has two nodes, A and B, connected by a 360m cable with threerepeaters in between, and they each have one frame of 1,024 bits to send to each other. Further assumethat the signal propagation speed across the cable is 2*10^8 m/sec, CSMA/CD uses back-off intervals ofmultiples of 512 bits, and each repeater will insert a store-and-forward delay equivalent to 20-bittransmission time. At time t=0, both A and B attempt to transmit. After the first collision, A draws K = 0and B draws K = 1 in the exponential back-off protocol after sending the 48bits jam signal. a. What is the one-way propagation delay (including all repeater delays) between A and B inseconds? At what time is A's packet completely delivered at B? b. Now suppose that only A has a packet to send and that the repeaters are replaced with switches.Suppose that each switch has an 8-bit processing delay in addition to a store-and-forward delay.At what time, in seconds, is A's packet delivered at B?
Computer Science Which of the following statement is true for Path term in SDH Network? a. Points where add/drop signal occurs. b. Points between SDH network Originated and Terminated. c. Points where regeneration of signal occurs. d. Points where Multiplexing/Demultiplexing of signal occurs.
Why CDMA can make users communicate at the same time using the same frequency band without interference? Explain the advantages and disadvantages of CDMA. Why ADSL can achieve the transmission rate of several Mbps using the bandwidth less than 1MHz? Each question is a judgment question. Write down your answer with T for True, F for False, and give the explanation if the answer is False. Consider a system of bandwidth 10Mbps, with multiple users, each is active (i.e., have data to transmit at rate 1Mbps) with a low probability, e.g. 0.1. From the capacity perspective, packet switching is better than circuit switching because the former can support more users. Denial of Service (DoS) attack can be generated by a large number of (legitimate) TCP connection requests to the same targeted server at the same time. These TCP requests can be originated from different hosts in a botnet, which is controlled by the attacker. In VSAT systems the micro-stations do not have sufficient…