CSC 2212 Local Area Networks

Which of the following use the CSMA/CD access method?

1000BaseT

Which of the following Ethernet standards uses fiber-optic cabling? (Select two.) 1000BaseCX 100BaseT4 100BaseFX 100BaseTX 1000BaseLX

100BaseFX, 1000BaseLX

Assuming the network is indicated by the default portion of the IP address, which three of the following IP addresses belong to the Class A network 114.0.0.0? (Select three.) 114.0.0.15 115.77.89.4 114.58.12.0 115.0.0.66 114.122.66.12 115.88.0.55

114.0.0.15, 114.58.12.0, 114.122.66.12

A host on the network has an IP address of 129.11.99.78 using the default subnet mask. How would you identify the address and mask using CIDR notation? 129.11.99.78:8 129.11.99.78:24 129.11.99.78:16 129.11.99.78/16 129.11.99.78/24 129.11.99.78/8

129.11.99.78/16

Which of the following is the last IP address that can be assigned to hosts on the 166.70.0.0 network using the default subnet mask? 166.70.255.255 166.71.0.0 166.70.255.254 166.70.0.254 166.70.0.255

166.70.255.254

You've decided to use a subnet mask of 255.255.192.0 on the 172.17.0.0 network to create four separate subnets. Which network IDs will be assigned to these subnets in this configuration? (Select two.) 172.17.32.0 172.17.96.0 172.17.16.0 172.17.0.0 172.17.128.0

172.17.0.0, 172.17.128.0

Your network has been assigned the Class B network address of 179.113.0.0. Which three of the following addresses can be assigned to hosts on your network? 180.113.0.67 179.113.89.0 179.113.0.118 179.114.88.0 179.113.0.0 179.112.95.64 179.113.65.12

179.113.65.12, 179.113.0.118, 179.113.89.0

You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service in a wiring closet on the main floor. You have a second wiring closet on the main floor. You need to connect the two wiring closets. Which of the following are typically used to connect the two wiring closets? (Select two.)

25 pair, Horizontal cross connect

Which of the following is a valid MAC address? 145.65.254.10 FABC.875E.9BG6 95ABC2F4.ABC5.569D.43BF AB.07.CF.62.16.BD

AB.07.CF.62.16.BD

A host wants to send a message to another host that has the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address?

ARP

You have a network connected using a physical star topology. One of the drop cables connecting a workstation has been removed. Which of the following best describes what affect this will have on network communications?

All devices will be able to communicate, except the device connected with the drop cable .

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You use a single Cat6e cable to connect the wiring closet to the shipping building. Which of the following conditions are you most likely to experience?

Attenuation

The media access control method of all Ethernet networks is __________.

CSMA/CD

You are making Ethernet drop cables using Cat5e cable and RJ45 connectors. You need to remove the plastic coating over the cable to expose the individual wires. Which tool should you use?

Cable stripper

What is the minimum cable specification that supports 1000 Mbps Ethernet?

Cat 5e

Which of the following are requirements of the 1000BaseT Ethernet standards? (Select three.)

Cat 5e cabling, RJ45 connectors, The cable length must be less than or equal to 100m

Which of the following cable types often includes a solid plastic core that keeps the twisted pairs separated?

Cat 6

What type of cabling is used with 100BaseTX Fast Ethernet networks?

Cat5 or higher

You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0. Which of the following describes the address type?

Classless

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 3 and pin 2 to pin 6.

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 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5.

What is the basic purpose of the OSI Physical layer?

Coordinates rules for transmitting bits.

You are building network cables and attaching RJ45 connectors to each end. Which tool do you need for this task?

Crimping tool

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

Crossover

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?

Crossover

You have decided to implement Gigabit Ethernet on your network. Each switch port is connected to a single device. Following the installation, you find one device connected to a switch that is only running at 100 Mbps. Which of the following are likely causes?

Crosstalk

Use the exhibit to match the connector type on the left with the corresponding letter on the right. RJ11 A DB9 B RJ45 C DB25 D LC E BNC F F-Type G

DB25 - A DB9 - B RJ45 - C RJ11 - D LC - E BNC - F F-Type - G

You have a small network, as shown in the Exhibit. You have configured the IP address and subnet mask on Wrk1. You want to be able to use Wrk1 to browse the internet to connect to sites like www.cisco.com. Which other parameters are required on the workstation? (Select two.) WINS server address DHCP server address DNS server address Default gateway Host name

DNS server address, Default gateway

You have a network connected using a full physical mesh topology. The link between device A and device B is broken. Which of the following best describes what affect this will have on network communications?

Device A will be able to communicate with all other devices.

In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.)

Encrypt and compress data, Specify data format (such as file formats).

Which of the following functions are performed by the OSI Transport layer? (Select three.)

End-to-end flow control, Reliable message delivery, Data segmentation and reassembly

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

Ethernet 100BaseFX networks use what type of cabling?

Fiber optic

Which of the following is the best device to deploy if you want to protect your private network from a public untrusted network?

Firewall

You are the administrator of your company's network. You want to prevent unauthorized access to your intranet from the internet. Which of the following should you implement?

Firewall

Which of the following are advantages of using fiber optic cabling for a network? (Select two.)

Greater cable distances without a repeater, Immunity to electromagnetic interference

Which of the following devices does not segment the network?

Hub

Which of the following devices operates at the OSI model Layer 1?

Hub

You have a network that occupies both floors of a building. The WAN service provider has installed the line for the WAN service in a wiring closet on the main floor. You have a second wiring closet on the second floor directly above the wiring closet that holds the demarc. Which of the following terms describes the closet on the second floor?

IDF

You have a workstation connected to a small branch network using a single switch. The network does not have any routers and is not connected to the internet. What are the minimum configuration parameters required on the workstation to be able to communicate with all hosts on the network?

IP address and subnet mask

You recently created a new network segment for the development department. Because the hosts are now on a different network segment, they can no longer contact the DHCP server. Both network segments are connected via a Cisco router. Which of the following would be the best action to take in order to fix the problem?

Implement an IP helper address on the router.

Users are complaining that sometimes network communications are slow. You use a protocol analyzer and find that packets are being corrupted as they pass through a switch. You also notice that this only seems to happen when the elevator is running. What should you do?

Install shielded cables near the elevator.

Which of the following is true about the MAC address? (Select two.)

It is typically represented by hexadecimal numbers, It is a 48-bit address.

Which of the following statements accurately describes how a modem works? (Select two.)

It modulates digital data from the PC into analog data and transmits it on a telephone network, It demodulates analog data from a telephone network into digital PC data.

At which OSI model layer does a media converter operate?

Layer 1

At which of the following OSI layers does a router operate?

Layer 3

Which of the following terms identifies the wiring closet in the basement or a ground floor that typically includes the demarcation point?

MDF

Which of the following connectors are used with fiber optic cables and include both cables in a single connector? (Select two.)

MTRJ, LC

Which of the following tests can be performed by a TDR? (Select two.)

Measure the length of a cable, Identify the location of a fault on a cable.

You have a server that has a 100BaseFX network interface card that you need to connect to a switch. The switch only has 100BaseTX switch ports. Which device should you use?

Media converter

You have a network that uses a logical bus topology. How do messages travel through the network?

Messages are broadcast to all devices connected to the network.

You have a network that uses a logical ring topology. How do messages travel through the network?

Messages travel from one device to the next until they reach the destination device.

Which of the following geographic network types are typically managed by a city as a public utility?

Metropolitan area network (MAN)

Which of the following functions are performed at the Physical layer of the OSI model?

Moving data across network cables

Which network component connects a device to transmission media and allows the device to send and receive messages?

Network interface card

Which of the following devices operate at the Data Link layer of the OSI model? (Select three.)

Network interface cards (NICs), Bridges, Switches

You have a network connected using a physical bus topology. One of the cables that connects a workstation to the bus breaks. Which of the following best describes what effect this will have on network communications?

No devices will be able to communicate.

You are building a new network for a small startup financial services company. Security is paramount, so each organization within the company will have its own network segment separated by a router. However, funds are limited, and you have been asked to keep costs to a minimum. You have acquired a used fiber optic switch and want to use it to create a fiber optic backbone that interconnects all of the routers. You purchased several used single-mode GBIC modules on eBay that you will install in each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRJ connectors. You connect each module to the switch with 1-meter multimode patch cables. Will this implementation work?

No. You shouldn't use multi-mode patch cables with single-mode GBIC modules.

Which of the following is used to terminate individual wires from a 25 pair or 100 pair cable using female RJ45 ports?

Patch panel

You have implemented a network where each device provides all other devices on the network with access to shared files. What type of network do you have?

Peer-to-peer

At which layer of the OSI model do hubs operate?

Physical

You are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights and provides an air path for heating and air conditioning. You would like to run your Ethernet cables in this area. Which type of cable must you use?

Plenum rated cable

What tool should you use to extend network services beyond the demarc?

Punch down tool

You have a small home network connected to the internet using an RG-6 cable. You need to move the router connecting the network to the internet, but can't find any RG-6 cable. Which cable types could you use instead?

RG-59

Which of the following connectors is used with Ethernet 100BaseT networks?

RJ45

Which of the following connector types would you most likely use to connect to a T1 WAN service?

RJ48c

You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat 6a cable to connect the wiring closet to the shipping building. Which of the following should you include in your plan?

Repeater

Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? (Select two.)

Repeater, Hub

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 the sales 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 network card in the user's computer.

In which of the following topologies does each device on the network act as a repeater, sending the signal to the next device?

Ring

Which of the following connectors is used with fiber optic cables and requires that you use a twisting motion to connect it?

ST

Which of the following connectors usually require polishing as part of the assembly process? (Select two.)

ST, SC

An eight-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do?

Send the frame out ports two through eight.

Which of the following connectors is typically used on one end of a rollover cable?

Serial

Which type of optical fiber is normally used to connect two buildings that are several kilometers apart?

Single-mode

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.)

Single-mode fiber, 1000BaseLX

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 the implementation? (Select two.)

Single-mode fiber, 10GBaseLR standards

Users report that the internet is no longer accessible. You suspect that the line connecting your building to the internet is not working properly. Which of the following allows the service provider to remotely test the local loop?

Smartjack

RingWhich of the following topologies connects each network device to a central hub?

Star

You have a small network that uses a switch to connect multiple devices. Which physical topology are you using?

Star

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

Star, Bus

Which topologies is a CAN able to use? (Select three.)

Star, Bus, Ring

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?

Straight-through

Which of the following best describes the purpose of using subnets?

Subnets divide an IP network address into multiple network addresses.

You manage a subnet that uses the subnet address 198.162.1.0/23. Which of the following best describes how addressing is configured for the subnet?

Supernetting

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

What device is used to create a physical star topology?

Switch

Which of the following devices operates at the OSI model Layer 2?

Switch

Which of the following devices operate at OSI model Layer 2? (Select two.)

Switch, Network interface card

You have been asked to document the wiring in your building. You would like to identify the length of each Cat5 cable to verify that it meets Ethernet standards. You need to identify the length of the cables, but most cables run through walls and ceilings, making them difficult to trace. Which tool should you use?

TDR

You have a small network connected to the internet as shown in the Exhibit. You need to configure the default gateway address on Wrk1 so that it can communicate with hosts on the internet. Which address would you use for the default gateway address?

The IP address assigned to Fa0/0 on Router1.

Which of the following is true about single-mode fiber optic network cabling?

The central core is smaller than standard multi-mode fiber optic cabling core.

A network is connected following the IEEE 802.3 specifications. Which of the following best describes when a device can transmit messages?

The device listens to determine if the transmission media is free.

Which of the following are characteristics of coaxial network cable? (Select three.)

The ends of the cable must be terminated, It uses two concentric metallic conductors, It has a conductor made from copper in the center of the cable.

Which of the following are characteristics of an MTRJ fiber optic connector? (Select two.)

They use metal guide pins to ensure accurate alignment, They can be used with multi-mode fiber optic cables.

Which of the following is a good reason to install a firewall?

To prevent hackers from accessing your network.

Which device sends signals from a computer onto a network?

Transceiver

You are troubleshooting a connectivity problem in which one client system is unable to connect to a server. Both the server and client system are connected to the same Ethernet network switch. No other users have complained of a problem, and you suspect that faulty network cabling might be to blame. Which of the following troubleshooting steps are you most likely to perform first?

Use a cable tester to test the cable between the computer system and the network switch.

You are preparing to attach wires in a 110 block. You want to connect the wires and trim off the excess at the same time. Which of the following should you do? (Select two. Each answer is part of the complete solution.)

Use a punch down tool with a notched blade, Point the cut side of the tool towards the wire end.

You have just been hired as a network administrator. A user has just changed offices and needs you to activate the network and telephone connections in his office. However, the wiring at the punch down block is labeled poorly, and you are unable to tell which wires go to the user's office. What should you do?

Use a tone generator to locate the correct wiring.

Which of the following methods would you use to create a crossover cable?

Use the T568A standard on one connector and the T568B standard on the other connector.

Which of the following terms are often synonymous with or made possible with CIDR? (Select two.) Classful OSPF VLSM Classless NAT

VLSM, Classless

How do switches and bridges learn where devices are located on a network?

When a frame enters a port, the source MAC address is copied from the frame header.

When would you typically use an RJ11 connector?

When connecting a phone to a phone line

You want to use the T568A standard to add connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector?

White/green, green, white/orange, blue, white/blue, orange, white/brown, brown

You want to use the T568B standard for adding connectors to your Cat5 cable. Starting with pin 1, which order should you use for the wires within the connector?

White/orange, orange, white/green, blue, white/blue, green, white/brown, brown

Why might you use an RJ11 connector?

You want to connect your computer to the internet with a DSL modem.

You want a switch to have the ability to modify the media type the switch port supports. Which type of module might you use to make this possible?

GBIC, SFP

You are working with an older 10Base2 Ethernet network. Which of the following connector types will you most likely encounter?

BNC

Which of the following topologies connects all devices to a trunk cable?

Bus

Your network has been assigned the Class C network address 200.78.151.0. Which of the following addresses can be assigned to hosts on your network? (Select three.) 200.78.151.111 200.78.152.14 200.78.151.252 200.78.151.0 200.78.151.12 200.78.151.257 200.78.151.255

200.78.151.12, 200.78.151.252, 200.78.151.111

During a network infrastructure upgrade, you have replaced two 10 Mbps hubs with switches and upgraded from Category 3 UTP cable to 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 the network?

All network nodes except the printer will be available.

Which of the following is a valid MAC address? C0-34-FF-15-01-8E 192.168.12.15 255.255.255.0 34-9A-86-1G-B3-24 73-99-12-61-15 83-5A-5B-0B-31-55-F1

C0-34-FF-15-01-8E

You have implemented a network where hosts are assigned specific roles, such as file sharing and printing roles. Other hosts access those resources, but do not host services of their own. What type of network do you have?

Client-server

Which of the following tasks is associated with the Session layer?

Connection establishment

A switch is associated with which OSI model layer?

Data Link

Your company purchases a new bridge that filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning?

Data Link

You have a cable internet connection at home. The installer had connected the router near the outside wall of your house with RG6 cable. You move the cable router a distance of 50 meters using RG8 cables and special connector adapters. Which condition are you most likely to experience?

Echo

In the OSI model, which of the following functions are performed at the Application layer? (Select all that apply.)

Enabling communication between network clients and services, Integrating network functionality into the host operating system.

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?

Failed patch cable

You are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the internet to provide users with internet access. Since doing so, it has come to your attention that an intruder has invaded your network from the internet on three separate occasions. What type of network hardware should you implement to prevent this from happening again?

Firewall

Which of the following are included as part of Data Link layer specifications? (Select two.)

Identifying physical network devices, Controlling how messages are propagated through the network.

Which of the following best describes how a switch functions?

It connects multiple cable segments (or devices) and forwards frames to the appropriate segment.

You have implemented an ad hoc wireless network that doesn't employ a wireless access point. Every wireless network card can communicate directly with any other wireless network card on the network. What type of physical network topology has been implemented in this type of network?

Mesh

You want to implement a fault tolerant topology as you connect routers on your wide area network. Which of the following topologies meets your needs?

Mesh

Your manager has asked you to implement a network infrastructure that will accommodate failed connections. Which of the following network topologies provides redundancy for a failed link?

Mesh

At which OSI layer does a router operate to forward network messages?

Network

You are installing networking wiring for a new Ethernet network at your company's main office building. The project specifications call for Cat 5e UTP network cabling and RJ45 wall jacks. Near the end of the project, you run out of wire before the last few runs are complete. You have a spool of Cat 3 network cable in storage. Upon investigation, it appears very similar to Cat 5e wiring. Should you use Cat 3 cabling as a substitute for Cat 5e cabling to finish the project?

No. Cat 5e cabling has more twists per inch than Cat 3 cabling, reducing cross-talk and supporting higher data rates.

Your manager has asked you to implement a wired network infrastructure that will accommodate failed connections. You don't have a large budget, so you decide to provide redundancy for only a handful of critical devices. Which of the following network topologies should you implement?

Partial mesh

What topology is used with 100BaseTX Fast Ethernet networks? (Select two.)

Physical star/logical star, Physical star/logical bus

You need to terminate a Cat 6 UTP cable with an RJ45 connector. Your organization's IT policy states that all cable connectors must be wired according to TIA568A standards. Drag the UTP wire on the left to the correct pin in the RJ45 connector on the right. White with green stripe Pin 1 Solid brown Pin 2 White with orange stripe Pin 3 Solid orange Pin 4 Solid green Pin 5 Solid blue Pin 6 White with brown stripe Pin 7 White with blue stripe Pin 8

Pin 1 - White with green stripe Pin 2 - Solid green Pin 3 - White with orange stripe Pin 4 - Solid blue Pin 5 - White with blue stripe Pin 6 - Solid orange Pin 7 - White with brown stripe Pin 8 - Solid brown

You need to terminate a Cat 6 UTP cable with an RJ45 connector. Your organization's IT policy states that all cable connectors must be wired according to TIA568B standards. Drag the UTP wire on the left to the correct pin in the RJ45 connector on the right. Solid brown Pin 1 Solid blue Pin 2 White with brown stripe Pin 3 White with green stripe Pin 4 White with orange stripe Pin 5 Solid orange Pin 6 White with blue stripe Pin 7 Solid green Pin 8

Pin 1 - White with orange stripe Pin 2 - Solid orange Pin 3 - White with green stripe Pin 4 - Solid blue Pin 5 - White with blue stripe Pin 6 - Solid green Pin 7 - White with brown stripe Pin 8 - Solid brown

You are working with 25 pair wires and 66 blocks. You have pushed the wires onto the 66 block, but now you need to cut off the excess end of each wire. Which tool should you use?

Punch down tool

Which of the following topologies connects each device to a neighboring device?

Ring

Which of the following hardware devices links multiple networks and directs traffic between networks?

Router

In the OSI model, what is the primary function of the Network layer?

Routes messages between networks