section 5

Your network follows the 100Base-TX specifications for Fast Ethernet. What is the maximum cable segment length allowed? 100 meters 1,000 meters 500 meters 2,000 meters

100 meters Fast Ethernet using twisted-pair cables (either 100BaseT4 or 100BaseTX) has a maximum cable segment length of 100 meters. All Ethernet networks that use twisted-pair cable (Ethernet, Fast Ethernet, and Gigabit Ethernet) have a distance limitation of 100 meters.

Which Gigabit Ethernet standard uses multimode fiber optic cabling and supports network segments up to a maximum of 550 meters long? 1000Base-T 1000Base-ZX 1000Base-SX 1000Base-CX

1000Base-SX The 1000Base-SX standard uses multimode fiber optic cable with a maximum segment length of 550 meters. However, to implement segments this long, you must use 50-micron 500MHz/km multimode fiber optic cabling. Other types of cabling will shorten the maximum segment length. 1000Base-FX also supports lengths up to 550 meters using multimode cabling. 1000Base-FX supports distances up to 10 kilometers using single-mode cabling. 1000Base-ZX has a maximum segment length of up to 100 km. 1000Base-CX and 1000BaseT use copper cabling instead of fiber optic.

Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with single-mode fiber optic cable? 1000BaseSX 1000BaseT 1000BaseLX 1000BaseCX

1000BaseLX 1000BaseLX supports segment lengths of up to 5 km when used with single-mode fiber optic cable. This maximum segment length is cut to 550 m when multimode fiber optic cable is used. 1000BaseSX supports segment lengths of only 550 meters. 1000BaseCX uses copper wire and supports segment lengths of only 25 meters. 1000BaseT uses twisted-pair cables.

You have been tasked with designing an Ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings, some of which are around 300 meters apart. Multimode fiber optic cabling has already been installed between buildings. Your client has asked that you use the existing cabling. Which Ethernet standard meets these guidelines? (Choose two.) 10GBase-T 10Base-FL 1000Base-T 1000Base-SX 10GBase-SR

10GBase-SR 1000Base-SX 10GBase-SR and 1000Base-SX can operate within these parameters. Both support segment lengths 300 meters long and can use multimode fiber optic cabling. 10Base-FL isn't a good choice because its data transmission rate is relatively slow. 10GBase-T and 1000Base-T both use copper wiring.

You would like to implement 10 Gbps Ethernet over a distance of 1 kilometer or greater. Which of the following would be the minimum requirement for this implementation? (Select two.) Multimode fiber 10GBaseER standards 10GBaseSR standards Single-mode fiber 10GBaseLR standards

10GBaseLR standards Single-mode fiber For 10 Gbps at distances up to 10 kilometers, use 10GBaseLR with single-mode fiber. Multimode fiber is cheaper, but it has a shorter maximum distance than single-mode fiber. 10GBaseSR uses multi-mode fiber at distances up to 300 meters. 10GBaseER supports distances up to 40 kilometers using single-mode fiber.

Your network follows the 100Base-FX specifications for Fast Ethernet and uses half-duplex multimode cable. What is the maximum cable segment length allowed? 100 meters 412 meters 550 meters 1,000 meters

412 meters 100Base-FX half-duplex multimode cable has a maximum segment length of 412 meters. 1000Base-SX and 1000Base-LX support multimode cable up to 550 meters. 10Base-FL supports fiber optic cable between 1,000 and 2,000 meters.

You have a network that's connected using a physical star topology. One of the drop cables connecting a workstation has been removed. Which of the following BEST describes the effect that this will have on network communications? All devices except the device connected with the drop cable will be able to communicate. All devices will be able to communicate. Only devices on one side of the missing cable will be able to communicate with each other, while only devices on the other side of the missing cable will be able to communicate with each other. No devices will be able to communicate. Devices on one side of the missing cable will be able to communicate with each other, while devices on the other side of the missing cable will not be able to communicate.

All devices except the device connected with the drop cable will be able to communicate. A cable break in a star topology means that the device connected to the central device (hub or switch) through that cable can no longer communicate on the network. All other hosts will be able to communicate with all other devices.

During a network infrastructure upgrade, you replaced two 10 Mbps hubs with switches and upgraded from a Category 3 UTP cable to a Category 5e. During the process, you accidentally cut the Cat 5e patch cable that stretches from the network printer to the upgraded switch. What is the impact on your network? All network nodes on the same subnet as the printer will be unavailable. All network nodes, including the printer, will be available. All network nodes except the printer will be available. All network nodes authenticated by the same server as the printer will be unavailable. All network nodes connected to the switch will be unavailable.

All network nodes except the printer will be available. UTP cable and switches are associated with a star network topology. In a star topology, each device is attached to the network using its own patch cable. If a cable were to fail for any reason, only the device connected by that cable would be unavailable.

You are implementing a SOHO network for a local business. The ISP has already installed and connected a cable modem for the business. The business has four computers that need to communicate with each other and the internet. The ISP's cable modem has only one RJ45 port. You need to set up the network within the following parameters: You must spend as little money as possible. You must not purchase unnecessary equipment. Computers need to have a gigabit connection to the network. New devices should not require management or configuration. You examine each computer and notice that only one of the four computers has a wireless NIC. They all have Ethernet NICs. What should you purchase? A hub and CAT 5e cabling. A new cable modem with a built-in switch and CAT 6a cabling. A wireless AP and three new wireless NICs. A managed switch and CAT 6 cabling. An unmanaged switch and CAT 5e cabling.

An unmanaged switch and CAT 5e cabling. You should purchase an unmanaged switch and CAT 5e cabling. Switches offer guaranteed bandwidth to each switch port and full-duplex communication. Unmanaged switches are autonomous in their function, requiring no port management or configuration. CAT 5e cabling supports transfer speeds up to 1,000 Gbps. Purchasing a new cable modem with a built-in switch would be more expensive than an unmanaged switch. Additionally, CAT 6a cabling is unnecessary for this type of network. Because all of the computers already have wired NICs, purchasing a wireless AP and three new wireless NICs would introduce new costs. The wireless AP would also require additional management and configuration. Hubs suffer from collisions, so only half-duplex communication is possible. This also wouldn't support 1,000 Gbps speeds. A small business with four computers doesn't need the additional features that a managed switch provides.

Which of the following is true about half-duplex mode? It requires switches with dedicated switch ports. Collision detection is turned on. The device can send and receive at the same time. Collision detection is turned off.

Collision detection is turned on. Half-duplex mode requires that collision detection be turned on. Full duplex mode requires that collision detection is turned off, that the device can send and receive at the same time, and that there are dedicated switch ports.

You want to create a loopback plug using a single RJ45 connector. How should you connect the wires in the connector? Connect pin 1 to pin 5 and pin 2 to pin 6. Connect pin 1 to pin 3 and pin 2 to pin 6. Connect pin 1 to pin 2 and pin 3 to pin 3. Connect pin 1 to pin 3 and pin 2 to pin 4. Connect pin 1 to pin 8 and pin 2 to pin 7.

Connect pin 1 to pin 3 and pin 2 to pin 6. To create a loopback plug or a crossover cable, connect pin 1 (Tx+) to pin 3 (Rx+) and pin 2 (Tx-) to pin 6 (Rx-). Connecting each pin to the opposite pin (1 to 8, 2 to 7, and so on) creates a rollover cable.

You want to create a rollover cable that has an RJ45 connector on both ends. How should you connect the wires within the connectors? Connect pin 1 to pin 3 and pin 2 to pin 6. Connect each pin on one end to the same pin on the other end (pin 1 to pin 1, pin 2 to pin 2, etc.). Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5. Use the T568A standard on one end and the T568B standard on the other end.

Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5. When terminated with an RJ45 connector on both ends, the wires within the connectors are rolled over to the opposite connectors as follows: Pin 1 connects to pin 8. Pin 2 connects to pin 7. Pin 3 connects to pin 6. Pin 4 connects to pin 5. A crossover cable uses the T568A standard on one end and the T568B standard on the other end. The crossover cable connects pin 1 to pin 3 and pin 2 to pin 6. Connecting each pin to the same pin on the other end creates a straight-through cable.

You want to connect the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. Which type of cable should you use? Loopback Straight-through Crossover Rollover

Crossover Use a crossover cable to connect a workstation or a router to a switch's uplink port. Use a straight-through cable to connect the router to a regular switch port. Use a rollover cable to connect a workstation to a router's console port. Use a loopback plug to allow a device to communicate with itself through its own network adapter.

You need to transfer data from one laptop to another, and you would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use? Straight-through Rollover Crossover Loopback

Crossover Use a crossover cable to connect two devices together in a back-to-back configuration. Use a straight-through cable to connect a workstation to a hub or switch port. Use a rollover cable to connect a workstation to the console port on a router or switch. Use a loopback plug to allow a device to communicate with itself through its own network adapter.

You need to connect two switches using their uplink ports. The switches do not support auto-MDI. Which type of cable should you use? Straight-through Loopback Crossover Rollover

Crossover Use a crossover cable to connect two switches through their uplink ports or to connect two switches through regular ports. Use a straight-through cable to connect the uplink port on one switch to a regular port on another switch. Use a rollover cable to connect a workstation to a switch's console port. Use a loopback plug connected to a single port for troubleshooting.

You have a network that's connected using a full physical mesh topology. The link between Device A and Device B is broken. Which of the following BEST describes the effect that this will have on network communications? No devices will be able to communicate with any other device. Device A will not be able to communicate with any other device. Device A will be able to communicate with any device except for Device B. Device A will be able to communicate with all other devices.

Device A will be able to communicate with all other devices. With a mesh topology, a break in a single link has no effect on communications. Data can be routed to the destination device by taking a different (sometimes longer) path through the mesh topology.

You have just connected four new computer systems to an Ethernet switch using spare patch cables. After the installation, only three systems are able to access the network. You verify all client network settings and replace the network card in the failed system. The client is still unable to access the network. Which of the following might you suspect is the real cause of the problem? Incorrect routing table Faulty IP stack Incorrect LAN protocol Failed switch Failed patch cable

Failed patch cable Bent and damaged patch cables prevent client systems from accessing the network. In this scenario, a faulty patch cable is the most likely cause of the connection failure. The easiest way to test this is to simply swap out the cable and try a known good UTP patch cable.

Which type of cabling do Ethernet 100BaseFX networks use? Fiber optic Coaxial Unshielded twisted pair Shielded twisted pair

Fiber optic

You are moving a client to a new location within an Ethernet network. Previous to the move, the client system did not have difficulty accessing the network. During the relocation, you attach patch cables from the client system to the wall jack and from the patch panel to the switch. Once connected, you do not get a link light on the network card or the switch. You swap out the cable running between the patch panel and the switch with a known good one, but you still cannot connect. Which of the following might you suspect is the problem? Failed patch cable between the client system and the wall jack Failed network card Faulty termination Failed switch Incorrect duplex settings Server software configuration error

Failed patch cable between the client system and the wall jack Because the client system previously worked in a different location, the issue is not likely related to the client system. The NIC and switch LEDs' failure to light indicates that there isn't an end-to-end connection between the client and the switch. This means that either the patch cable between the wall jack and the client is faulty or the cable between the patch panel and the switch is faulty. The cable connecting the switch and the patch panel was verified, leaving the cable between the wall jack and the client system. It is unlikely that the issue is a failed network card, as the system was functioning in a different location, eliminating the possibility of hardware or software on the client system being the problem. The failure is limited to a connection issue between a single client and a switch. If the switch failed, all clients connected to that switch would not be able to connect. Incorrect duplex settings would not prevent NIC and switch LEDs from lighting.

Upon conducting a visual inspection of the server room, you see that a switch displays LED collision lights that are continually lit. You check the LED on the corresponding workstation and see that it is flashing rapidly even though it is not sending or receiving network traffic at that time. What is the cause of the network collisions? Faulty network card Faulty switch Incorrect duplex settings Adapter controller card failure

Faulty network card Sometimes when a NIC fails, it doesn't just stop working, but it begins to flood the network with transmissions. This is called jabbering. A single network card can slow down an entire network by continually transmitting signals. You can identify a jabbering network card by slower than normal speeds, high occurrences of collisions displayed on the hub or switch, and LEDs on the network card, indicating a high level of transmissions even though a user is not accessing the network.

You have a network that's connected using a physical bus topology. One of the cables that connects a workstation to the bus breaks. Which of the following BEST describes the effect that this will have on network communications? Only devices on one side of the break will be able to communicate with each other, while only devices on the other side of the break will be able to communicate with each other. No devices will be able to communicate. All devices except the device connected with the drop cable will be able to communicate. Devices on one side of the break will be able to communicate with each other, while devices on the other side will not be able to communicate. All devices will be able to communicate.

No devices will be able to communicate. A break in the network bus means that the end of the network bus is no longer terminated. For this reason, a break in the bus typically means that no devices can communicate. Identifying the location of the break is difficult on a true bus network.

Which of the following connectors is typically used for the ends of a rollover cable? F-type RJ11 RJ45 BNC Serial

RJ45 Serial A rollover cable has a serial connector on one end and an RJ45 connector on the other end. Alternatively, a rollover cable might have an RJ45 connector on both ends and use a serial converter to convert from the RJ45 connector to a serial connector. BNC and F-type connectors are used with coaxial cables. RJ11 connectors are used for telephones.

Which of the following standards does a rollover cable typically use? RG58 RG6 RS232 RJ11

RS232 A rollover cable typically has a serial connector on one end and an RJ45 connector on the other end. RS232 is the standard for serial communications. RJ11 connectors are used for analog telephone lines. RG6 and RG58 are coaxial cable standards.

A user from the sales department calls to report that he is experiencing problems connecting to the sales file server. All users in the sales department connect to this server through a single Ethernet switch. No other users have reported problems connecting to the sales server. Which of the following troubleshooting actions are you MOST likely to perform first? Replace the Ethernet switch in the sales department. Replace the network card in the user's computer. Replace the network card in the sales server. Reinstall the network card drivers on the sales server.

Replace the network card in the user's computer. In this scenario, you are most likely to replace the network card in the user's computer. As there is only one user experiencing the problem, you are unlikely to replace the network card in the server or replace the Ethernet switch. For the same reason, you are also unlikely to replace the network card drivers on the server. If more than one user were experiencing the problem, any of these options could be a valid troubleshooting step.

You have purchased a new router that you need to configure. You need to connect a workstation to the router's console port to complete the configuration tasks. Which type of cable would you most likely use? Straight-through Rollover Crossover RG6

Rollover Use a rollover cable to connect a workstation to the console port on a router or switch. The rollover cable has an RJ45 connector on one end to connect to the console port. The other end has a serial connector to connect to the workstation's serial port. You then run a terminal emulation program on the workstation to connect to the console on the router or switch in order to perform configuration and management tasks. Use a straight-through or crossover Ethernet cable to connect devices using the Ethernet RJ45 ports. An RG6 cable is a coaxial cable.

Which of the following connections would you use a straight-through cable for? Router to a regular port on a switch Hub to hub Router to the uplink port on a hub Workstation to workstation

Router to a regular port on a switch. Use a straight-through cable when connecting the following devices: Workstation to a regular port on a hub or switch. Router to a regular port on a hub or switch. Regular port on a hub or switch to an uplink port on a hub or switch.

You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose? (Select two.) 1000BaseCX Mutimode fiber Single-mode fiber 1000BaseLX 1000BaseSX

Single-mode fiber 1000BaseLX Of the standards listed in this question, 1000BaseLX provides the greatest cable length (think of the "L" in 1000BaseLX as "Long"). When using fiber optic across long distances, use single-mode fiber. Multimode fiber is cheaper, but it has a shorter maximum distance than single-mode fiber. 1000BaseSX stands for short fiber optic, and 1000BaseCX uses short copper within a wiring closet.

Which of the following physical topologies are used with Ethernet networks? (Select two.) Mesh Ring Star Bus Token

Star Bus Ethernet networks use either a physical bus or physical star topology. Hubs can also be cascaded to form a tree topology.

You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not support auto-MDI. Which type of cable should you use? Crossover Rollover Loopback Straight-through

Straight-through Use a straight-through cable to connect a workstation or router to a regular switch port. Use a crossover cable to connect a workstation to an uplink port. Use a rollover cable to connect a workstation to a switch's console port. Use a loopback plug to allow a workstation to communicate with itself through its own network adapter.

Angela is the network administrator for a rapidly growing company with a 100BaseT network. Users have recently complained about slow file transfers. While checking network traffic, Angela discovers a high number of collisions. Which connectivity device would BEST reduce the number of collisions and allow future growth? Switch Router Bridge Hub

Switch A switch would be the best choice in this situation. A bridge would segment traffic and reduce collisions, but it would be harder to maintain and harder to add new bridges as the network grows. A router would also allow growth and reduce collisions, but switches can provide those benefits at a lower cost per port and offer more administration options. A hub is not a good choice in this scenario.