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When comparing and contrasting the similarities and differences between bridges and switches, which of the following are valid statements? Choose all the valid answer choices) A. Bridges are faster than switches because they have fewer ports. B. A switch is a multiport bridge, C. Bridges and switches learn MAC addresses by examining the source MAC address of each frame received. D. A bridge will forward a broadcast but a switch will not. E. Bridges and switches increase the size of a collision domain. F. None of the above statements are true. Answer: B, C Explanation: Both bridges and switches build the bridge table by listening to incoming frames and examining the source MAC address in the frame. Switches are multiport bridges that allow you to create multiple broadcast domains. Each broadcast domain is like a distinct virtual bridge within a switch. Incorrect Answers: A. Switches are generally faster than bridges. Bridges also do not necessarily have fewer ports than switches. D. Both bridges and switches will forward broadcast and multicast traffic, assuming that the traffic remains in the same VLAN. E. The use of VLANs in a switch can decrease the size of the collision domain, by creating additional, smaller collision domains. QUESTION 4: Which of the following correctly describe the various functions and virtues of a router? (Select all valid answer choices) A. Packet switching B. Collision prevention on a LAN segment. C. Packet filtering D. Broadcast domain enlargement E. Broadcast forwarding 640-802 F. Internetwork communication G. None of the above Answer: A, C, F Explanation: The main function of a router is to connect different, separated networks together. In doing so, switching packets from one network to another is a primary function, along

D. Repeaters can be used to physically extend the LAN to greater distances. A hub E. actually interpreting Ethernet header information. As an additional feature. You are instructed to enlarge the area covered by a single LAN segment on the Certifyme network. 640-802 QUESTION 6: Cisco is the leader in the router market space. Routers can indeed be used to segment a network separate a collision domain. Unless bridging or IP helpers are configured on the router. QUESTION 5: The LAN needs are expanding at the Certifyme corporate office. particularly addresses. repeating an electrical signal. whereas a switch performs OSI layer 2 functions. Which of the following are layer 1 devices that you can use? (Choose all that apply. since routers do not forward LAN broadcasts and multicasts to other interfaces. The microsegmentation of broadcast domains B. A network adapter card D. routers alone can not prevent all collisions from occurring on any given LAN segment. However. Routers actually segment LANs into smaller broadcast domains. LAN broadcasts are blocked at the router level. So. Bridging between LAN segments . a hub actually performs OSI layer 1 functions. which is quickly growing. so choice C is also correct. to make forwarding decisions. A repeater Answer: D. but does examine and generate electrical signals. Routers do not forward broadcast and multicast traffic out the additional interfaces by default. E Explanation: A hub simply repeats the electrical signal and makes no attempt to interpret the electrical signal (layer 1) as a LAN frame (Layer 2). a repeater is considered to operate at Layer 1. Packet switching D. Hubs can be used to increase the number of stations that can be supported on a LAN.with providing for communication between networks.) A. Path selection C. A router C. Incorrect Answers: B. routers are capable of providing filtering on a network address and application port level. E. A switch B. Because the repeater does not interpret what the bits mean. What basic functions do their routers perform in a network? (Choose two) A.

Switches are primarily software based while bridges are hardware based. A CSU/DSU terminates a digital local loop. A CSU/DSU terminates an analog local loop. B. D. A router is commonly considered a DTE device. Bridges define broadcast domains while switches define collision domains. Switches usually have a higher number of ports than most bridges. A router is commonly considered a DCE device. Bridges are frequently faster than switches. C Explanation: The primary functions of a router are: Packet Switching and Path Selection. Answer: B. D. C. QUESTION 9: . Both bridges and switches make forwarding decisions based on Layer 2 addresses. D Explanation: Layer 2 switching is considered hardware-based bridging because it uses specialized hardware called an application-specific integrated circuit (ASIC). C. E. and switching that data as quickly as possible. G. Both bridges and switches forward Layer 2 broadcasts. Generally bridges have two ports. C. Both operates on Data link layer. A modem terminates an analog local loop. Switches usually have higher port number then bridge. A modem is used to terminate a T1 Answer: A. It is the routers job to determine the best method for delivering the data. ASICs can run up to gigabit speeds with very low latency rates. B. 640-802 F. QUESTION 7: Both bridges are switches are being used throughout the Certifyme LAN. F. E. Which of the following correctly describes the roles of devices in a WAN? (Choose three) A. Access layer security F. A modem terminates a digital local loop. Which of the following statements are true regarding bridges and switches in this network? (Choose 3) A. E. F QUESTION 8: As a network administrator.E. VLAN membership assignment G. Application optimization Answer: B. you will need to decide on the appropriate network devices to use.

Increasing the size of broadcast domains C. a switch can be programmed to reject (not forward) all frames sourced from a particular network. To obtain the IP Address of a connected device in order to telnet to the device 640-802 C. D Explanation: A: A half duplex connection is where only one device can send or receive at a time. .The Certifyme network administrator needs to determine what LAN devices to install on the Certifyme network. if you have a 100Mb half-duplex connection. You can use: Show cdp neighbor Show cdp neighbor details Commands to gather the information of connected neighbors. To verify the type of cable interconnecting two devices D. filters can be helpful in dealing with unnecessary broadcast and multicast packets. Furthermore. What are two advantages of using Layer 2 Ethernet switches over hubs? (Choose two) A. If you have a 100Mb full duplex connection. To determine the status of the routing protocols between directly connected routers G. you can effectively get 200Mb out of the link because you could be sending 100Mb and receiving 100Mb at the same time. Decreasing the number of collision domains Answer: A. Allowing simultaneous frame transmissions B. which is useful info for troubleshooting and documenting the network. To verify Layer 2 connectivity between two devices when Layer 3 fails E. To determine the status of network services on a remote device B. Filtering frames based on MAC addresses E. Because link layer information often includes a reference to an upper-layer protocol. only sending at 100Mb OR receiving at 100Mb can happen at the same time. D: Switches are capable of filtering frames based on any Layer 2 fields. A full duplex connection is where both devices can send and receive at the same time. To obtain VLAN information from directly connected switches F. Thus. D Explanation: Cisco Discovery Protocol (CDP) is a proprietary protocol designed by Cisco to help administrators collect information about both locally attached and remote devices. QUESTION 10: CDP is being used throughout the Certifyme network. switches usually can filter on this parameter. What are two reasons why the Certifyme network administrator would use CDP? (Choose two) A. To support automatic network failover during outages Answer: B. Increasing the maximum length of UTP cabling between devices D. For example. you can gather hardware and protocol information about neighbor devices. By using CDP.

C Explanation: 640-802 QUESTION 12: Two Certifyme offices are connected as shown below: Two buildings on the London campus of a the Certifyme corporation must be connected to use Ethernet with a bandwidth of at least 100 Mbps. Interference immunity and lack of emissions are givens in FO systems and in the fiber medium itself. Based on the information shown above. However. QUESTION 13: Refer to the Certifyme network shown below: You work as a network technician at Certifyme . Device Identifiers B. Coaxial cable B. it’s not susceptible to electrical interference. In this scenario the distance between the buildings is only 55 meters so either copper or fiber could be used. Fiber optic cable C. Please study the exhibit carefully.com. FO-product vendors also claim that fiber systems make secure communications easier. B. as the distance limitation for 100M UTP Ethernet is 100 meters. fiber would be a better fit as it is not prone to errors that could occur due to the voltage potential differences. What information is supplied by CDP? (Select three) A.QUESTION 11: CDP is running between two Certifyme devices. Route identifier E. Certifyme is concerned about possible problems from voltage potential differences between the two buildings. UTP cable D. STP cable E. None of the above Answer: B Explanation: Current Ethernet technology typically comes via either copper UTP or fiber cables. Neighbor traffic data Answer: A. Because fiber is a dielectric material. Platform D. Which media type should be used for the connection? A. what is needed to allow host 640-802 . Capabilities list C.

one serial connection for the T1 and one Ethernet interface to connect to the switch on the LAN. QUESTION 15: As a CCNA candidate. A router with one Ethernet and one modem interface F. you must know the various layers of the OSI model. A switch with one Ethernet and one serial interface D. so both switches need to connect to a router using straight-through cables. A router with two Ethernet interfaces C. At which layers of the OSI Model do Wide Area Networks operate in? (Choose two) . A straight-through cable is used to connect two different devices like. A router with one Ethernet and one serial interface E. a backbone switch connecting the switches with either fiber optic or straight-through cables C. Since we need to insert a router for communication between the two switches. a router connected to the switches with straight-through cables Answer: E Explanation: Routers are Layers 3 devices used for inter-network communication. a straight-through cable connecting the switches D. a CSU/DSU connected to the switches with straight-through cables E. and a network device needs to be installed in the place of the icon labeled Network Device to accommodate a leased line T1 to the Internet. straight through cables will be used between the switches and the router. a crossover cable connecting the switches B. we will need a router with two interfaces. Which network device and interface configuration meets the minimum requirements for this installation? A.Certifyme 1 to ping host Certifyme 2? A. host to switch. A switch with two Ethernet interfaces B. Here. and only a router can connect two different IP networks. QUESTION 14: Exhibit: A new Certifyme office is opening. switch to router. In this scenario there are two different networks. None of the above Answer: D 640-802 Explanation: Only a router can terminate a leased line T1 access circuit.

ICMP helps control and manage IP’s work and therefore is considered part of TCP/IP’s network layer. ISBN 1-58720-083-X) page 277. such as telephone companies. The access layer D. The application layer C. Network Layer D. Datalink Layer C. Physical Layer B. The network layer Answer: E Explanation: TCP/IP includes ICMP. Control message is the most descriptive part of a name. B Explanation: A WAN is a data communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers. Presentation Layer G. Session Layer E.” At which OSI layer is this problem associated with? A. but since this question asked for only 2 choices layers 1 and 2 are better choices. a protocol designed to help manage and control the operation of a TCP/IP network. you issue the ping command from your PC command prompt. The session layer E. Reference: CCNA Self-Study CCNA ICND exam certification Guide (Cisco Press. QUESTION 17: . Application Layer Answer: A. WAN technologies generally function at the lower two layers of the OSI reference model: the physical layer and the data link layer as shown below. The ICMP protocol provides a wide variety of information about a network’s health and operational status. Note: Occasionally WAN’s would also be considered to operate at layer 3. Transport Layer F. 640-802 QUESTION 16: While troubleshooting a connectivity problem on the network. but the output shows “request times out. The data link layer B.A.