Chapter 1. The TCP/IP and OSI Networking Models Page 1 of 22 Chapter 1. The TCP/IP and OSI Networking Models This chapter covers the following exam topics: Operation of IP Data Networks Recognize the purpose and functions of various network devices such as Routers‚ Switches‚ Bridges and Hubs. Select the components required to meet a given network specification. Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models. Welcome to the first chapter in your
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Cut through frame processing by a switch allows the switch to discard frames that fail the fcs check. –false When a switch Receives an Ethernet frame to a destination Mac address which is not in the devices Mac address tableThe switch applies the following logic – Floods that Ethernet frame out All interfaces except the received interface Which of the following correctly describe silk collation Domain design Trade offs – Single coalition domain requires all devices on a segment to share available
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a card with a unique MAC address. The IEEE is responsible for assigning MAC addresses to the vendors of network interface cards. No two cards ever manufactured should share the same address. Hubs An Ethernet hub or concentrator is a device for connecting multiple twisted pair or fibre optic Ethernet devices together‚ making them act as a single segment. It works at the physical layer of the OSI model‚ repeating the signal received at one
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1. An enterprise campus LAN uses wired UTP Ethernet and wireless 802.11 LANs at the edge of the LAN. Looking at a particular floor in a particular building‚ all the devices connect to either a single Ethernet switch or single wireless access point‚ both of which sit in a wiring closet in the middle of the space. Which of the following is true about the distance limitations in this LAN? C. All Ethernet user devices can be up to 100 meters away (but no farther)‚ while WLAN devices must typically be
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pair (UTP) copper cable for connecting dissimilar networking devices Crossover Cable: UTP copper cable for connecting similar networking devices Serial Cable: Copper cable typical of wide area connections Ethernet: Dominant local area network technology MAC Address: Ethernet Layer 2‚ physical address IP Address: Layer 3 logical address Subnet Mask: Required to interpret the IP address Default Gateway: The IP address on a router interface to which a network sends traffic leaving
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Exercise 4.1.4 Table 4-1 UTP Standards Category Maximum Speed Application 1 Telephone cabling (POTS) 2 4 Mbps Token Ring 3 16 Mbps 10 Base T Ethernet 4 20 Mbps Token Ring 5 100 Mbps 100 Base T Ethernet 5e 1 Gbps Gigabit Ethernet 6 1 Gbps Gigabit Ethernet and faster broadband applications 6a 10 Gbps Future standard that will provide 10 Gbps Ethernet Exercise 4.1.5 Standard Crossover Pin Color Color --- ------------- ------------- 1
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an isolated network to connect computers in an organization for the sole purpose of sharing resources‚ most LANs today are also linked to a wide area network or the Internet. A LAN can be one of two types: wired or wireless. A wired LAN requires Ethernet cable to physically connect all computers on the network to a main device called a switch. Below is an example of wired LAN. 1.1 Wired Local Area Network WLAN is a wireless local area network links devices via a wireless distribution method and
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destination address of a broadcast frame is a value of all binary 0s. ____T 2. Class A addresses are intended for use by large corporations and governments. ____F 3. 1000BaseT‚ released as the 802.3ab standard in June 1999‚ supports Gigabit Ethernet over 100-meter segments of balanced Category 5 copper cabling and requires two pairs of wires. ____T 4. The signaling rates associated with SONET are the same as those for ATM. ____F 5. A hardware firewall is configured with two or more network
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standards so important for NICs‚ connectors‚ and media? Use your textbook and Internet research to justify your answer. So that NIC’s on different service providers can communicate with each other. Exercise 4.1.2 The voltage for registering a bit of 1 on Ethernet can be as low as 2.5 volts or even 1 volt. Why is this so low when the capacity for transmitting electricity on the copper wire is so high? Use your textbook and Internet research to support your answer. Copper wire is used to power appliances and
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Let A and B be two stations attempting to transmit on an ethernet. Each has a steady queue of frames ready to send; A’s frames will be numbered A1 ‚ A2 and so on‚ and B’s similarly. Let T = 51.2 µs be the exponential backoff base unit. Suppose A and B simultaneously attempt to send frame 1‚ collide‚ and happen to
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