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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

Incorrect Answers: B. A router C. QUESTION 5: The LAN needs are expanding at the Certifyme corporate office. a repeater is considered to operate at Layer 1. routers alone can not prevent all collisions from occurring on any given LAN segment. 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). Routers do not forward broadcast and multicast traffic out the additional interfaces by default. However. but does examine and generate electrical signals. routers are capable of providing filtering on a network address and application port level. Hubs can be used to increase the number of stations that can be supported on a LAN.with providing for communication between networks. whereas a switch performs OSI layer 2 functions. a hub actually performs OSI layer 1 functions. Which of the following are layer 1 devices that you can use? (Choose all that apply. Path selection C. which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the Certifyme network. A repeater Answer: D. Bridging between LAN segments . Repeaters can be used to physically extend the LAN to greater distances. Unless bridging or IP helpers are configured on the router. repeating an electrical signal. D. since routers do not forward LAN broadcasts and multicasts to other interfaces. A switch B. so choice C is also correct. A hub E. A network adapter card D. to make forwarding decisions. Routers actually segment LANs into smaller broadcast domains. Because the repeater does not interpret what the bits mean. E. particularly addresses. Packet switching D. 640-802 QUESTION 6: Cisco is the leader in the router market space. LAN broadcasts are blocked at the router level. What basic functions do their routers perform in a network? (Choose two) A.) A. actually interpreting Ethernet header information. As an additional feature. The microsegmentation of broadcast domains B. Routers can indeed be used to segment a network separate a collision domain. So.

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

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

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

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

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