Testout Study Questions

Which of the following are advantages of using fiber optic cabling for a network, as opposed to other types of cabling? (Select two)

-Immunity to electromagnetic interference -Greater cable distances without a repeater

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

-LC -MT-RJ

F-type connectors are typically used with cables using which of the following standards? (Select two.)

-RG-59 -RG-6

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

-ST -SC

Which of the following are Characteristics of coaxial network cable? (Choose three)

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

Which of the following are characteristics of an LC fiber optic connector? (Choose two.)

-They are half the size of standard connectors. -They use a housing and latch system similar to an RJ-45 UTP connector

Which of the following are characteristics of an MT-RJ fiber optic connector? (Select two)

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

What is the binary format for the following decimal IP address? 131.9.202.111

10000011.00001001.11001010.01101111

Match each decimal value on the left with the corresponding hexadecimal value on the right.

11:17 B:11 D:13 F:15 C:12 10:16

What is the decimal format for the following IP address 11001110.00111010.10101010.01000011

206.58.170.67

You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building 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.) A. Demarc extension B. Horizontal cross connect C. Smart jack D. 25 pair E. Vertical cross connect

B. Horizontal cross connect D. 25 pair A horizontal cross connect connects IDFs on the same floor. 25 pair or 100 pair wiring punched down into 66 or 110 blocks are often used to connect the wiring closets together. A vertical cross connect connects the IDF to the MDF on a different floor.

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

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 Use a cable stripper to remove the plastic covering for a cable. Note: When making drop cables or using punchdown blocks, do not remove the plastic covering for individual wires. Use snips to cut cables. Use a punchdown tool to push wires into 66 or 110 blocks and cut wires at the same time. Use a butt set to connect to phone lines to monitor, make, or answer phone calls.

Which of the following cable types often includes a solid plastic core?

Cat 6

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

Client- Server

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

Crimping tool You should use a crimping tool designed for RJ45 connectors to attach connectors to UTP cable.

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

Data Link

Which of the following are functions of the MAC sublayer? (Select two)

Defining a unique hardware address for each device on the network. Letting devices on the netowrk have access to the LAN.

Which of the following describes the point where the service provider's responsibility ends and the customer's responsibility begins for installing wiring and maintaining wiring and equipment?

Demarc

You have a network that occupies the top floor of a three story building. The WAN service provider has installed the line for the WAN service into the buiilding in a wiring closet on the main floor. What would you use to relocate the WAN line into a wiring closet on your floor?

Demarc extension A demarc extension extends the demarcation point from its original location to another location within the building.

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

Enabling communication between network clients and services. Integration of network functionality into the host operating system.

You have just signed up for a broadband home Internet service that uses coaxial cable. Which connector type will you most likely use?

F-type

Which protocol is used on the World Wide Web to transmit Web pages to Web browsers?

HTTP

Which protocol is used for securely browsing a website?

HTTPS

Which of the following protocols allows hosts to exchange messages to indicate problems with packet delivery?

ICMP

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

IDF An intermedaite distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the MDF, although additional IDFs can be added on each floor as necessary.

Which of the following protocols stores email on the mail server and gives users a choice to download mail or keep it on the server?

IMAP4

You are asked to recommend an email retrieval protocol for a company's sales team. The sales team needs to access email from various locations and possible different computers. The sales team does not want to worry about transferring email messages or files back and forth between these computers. Which email protocol was designed for this purpose?

IMAP4

Which of the following are included as part of Data Link layer specifications?

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

The UDP transport protocol provides which of the following features?

Low Overhead Connectionless datagram services

The Data Link layer of the OSI model is comprised of two sublayers. What are they? (Select two)

MAC LLC

You have been asked to implement a network infrastructure that will accommodate failed connections. Which of the following network topologies provides redundancy for a failed link?

Mesh

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 interconnect routers on your wide area network. Which of the following would meet your needs?

Mesh

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 reached 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?

Movement of data across network cables

You have a large TCP/IP network and want to keep hosts' real time clock synchronized. What protocol should you use?

NTP

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

Network

You are installing network wiring for a new Ethernet network at our company's main office building. The project specs call for Category 5 UTP network cabling and RJ-45 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 Category 3 network cable in storage. Upon investigation, it appears very similar to Category 5 wiring. Should you substitute Category 3 cabling for Category 5 cabling to finish the project?

No, Category 5 cabling has more twists per inch that Category 3 cabling to reduce cross-talk and support higher data rates.

Based on the diagram, which network line code technique is being used?

Non-Return-to-Zero

Match the description on the left with the appropriate network signal line code on the right.

Non-Return-to-Zero Binary 1s are represented by positive voltage while 0s are represented by negative voltage. There is no zero voltage state between bits. Manchester The transition from one voltage level to another is used to represent binary data Return-to-Zero Inverted A 0 is represented by sending a light pulse. A 1 is represented by sending no light pulse. Return-to-Zero Binary 0s and 1s are transmitted by sending voltage pulses, with the voltage returning to zero between pulses.

Which of the following TCP/IP protocols do e-mail clients use to download messages from a remote mail server?

POP3

You have been asked 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

Which of the following is used to terminate individual wires from a 25 pair or 100 pair cable using female RJ-45 ports.

Patch panel A patch panel is a device that typically connects individual stranded wires into female RJ-45 conncetors. For example, you might connect 4 pairs of wires from a punchdown block to a port on the patch panel. On the patch panel, you then drop cables (cables with RJ-45 connectors) to the patch panel on one end and a computer on the other end. Use 66 and 110 blocks to connect individual wires within a wiring closet. These punchdown blocks connect the individual wires together, but not terminate in RJ-45 connectors. A horizontal cross connect connects IDFs on the same floor.

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

Peer-to-peer

At which layer of the OSI model do hubs operate?

Physical Hubs operate at layer 1, or the Physical layer.

Network Signaling is a function of which later of the OSI Model?

Physical Layer

You need to terminate a Cat6 UTP cable with an RJ45 connector. Your organization's IT policy states that all cable connectors must be wired according to ITA568A standards.

Pin 1 White with green stipe 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 are adding new wires in your building for some new offices. The building has a false ceiling that holds the lights. You would like to run your Ethernet cables in this area. Which type of cable must you use?

Plenum

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

Punchdown tool Use a punchdown tool to push into 66 or 110 blocks and cut wires at the same time. The punchdown tool has a blade on one side that cuts off the excess wires. Use snips to cut cables or wires. However, a punchdown tool would be easier to use for this task than wire snips. Use a cable stripper to remove the plastic covering for a cable. Note: When making drop cables or using punchdown blocks, do not remove the plastic covering for individual wires. Use a butt set to connect to phone lines to monitor, make, or answer phone calls.

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

Punchdown tool A demarc is the location where the local network ends and the telephone company's network begins. This location is usually at a punch down block in a wiring closet. You use a punchdown tool to attach wires to the punch down block.

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 should you use instead?

RG-59

Of the following cables, which offer the best protection against EMI?

RG-6

Which of the following connectors is used with Ethernet 10BaseT networks?

RJ-45

Which of the following connector types are used with UTP cables? (Select two)

RJ45 RJ11 Both RJ11 and RJ45 connectors are used with UTP (unshielded twisted pair) cables. BNC and F-Type connectors are used with coaxial cables. SC connectors are used with fiber optic cables.

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

RJ48c

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

Ring

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

Ring

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

Routes messages between networks.

What protocol sens e-mail to a mail server?

SMTP

Your company has just acquired another company in the same city. You are given the task of integrating the two e-mail systems so that messages can be exchanged between the e-mail servers. However, each network uses an e-mail package from a different vendor. Which TCP/IP protocol will enable messages to be exchanged between systems?

SMTP

Which of the following connectors is used with fiber optic cables and connects using a twisting motion?

ST

Match the networking function or device on the left with the OSI model layer it is associated with on the right.

Session number ASCII Port numbers Router Wireless access point HTTP Switch Application - HTTP Presentation - ASCII Session - Session ID number Transport - Port numbers Network - Router Data Link - Switch Physical - Wireless access point

Which of the following forms of optical fiber would usually be used to connect two building across campus from each other, which are several kilometers apart?

Single Mode

Of the following cables, which offer the best protection against EMI?

Single mode fiber optic

Routers are used to connect multiple subnets together. A firewall is a router that performs filtering on packets or other information contained in network communications. You have a small network that uses a hub to connect multiple devices. What physical topology is used?

Star

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

Star

A mesh topology has multiple connections at each node, increasing connectivity fault tolerance. None of the other topologies have fault tolerance built in. What device is used to create a physical star topology?

Switch

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

Switch Network interface card

Which three of the following devices operate at the Data Link layer of the OSI model?

Switches Network interface cards (NIC) Bridges

Which of the following protocols includes extensive error checking to ensure that a transmission is sent and received without mistakes?

TCP

You are an application developer and are writing a program to exchange video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery. Which TCP/IP protocol would you implement that provides this capability?

TCP

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

The central core is smaller than that of multimode fiber optic cabling

Which OSI model layer is responsible for guaranteeing reliable message delivery?

Transport

Match each layer of the TCP/IP model on the left with the corresponding layer of the OSI model on the right. Each option on the left can be used more than once.

Transport Internet Network Interface Application Presentation - Application Data Link - Network Interface Application - Application Session - Application Network - Internet Transport - Transport

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. The easiest way to create a crossover cable is to arrange the wires in the first connector using the T568A standard and arrange the wires in the second connector using T568B standard. A crossover cable connects the transmit pins on one connector to the receive pins on the other connector (pin 1 to pin 3 and pin 2 to pin 6).

Match each network signaling method on the left with its corresponding definition on the right.

Uses the entire network medium as a single transmission channel-Baseband Combines signals from multiple channels into a single channel.-De-multiplexing Assigns different frequencies to different channels on the same network medium.-Frequency-division multiplexing Divides the transmission medium into several channels.-Broadband Measures the number of times a signal in a communications channel changes state.-Baud rate Measures the number of data bits transmitted in one second in a communication channel.-Bit rate

You have a network that occupies all three floors of a building. The WAN service provider has installed the line for the WAN service into the building closet on the main floor. You have a wiring closet on the two remaining floors directly above the wiring closet on the main floor. What would you use to connect the wiring closets together?

Vertical cross connect A vertical cross connect connects the main distribution frame (MDF) on the main floor to intermediate distribution frames (IDFs) on upper floors. Cabling runs vertically (up and down) between the MDF and the IDFs. A horizontal cross connect connects IDFs on the same floor. Cabling runs horizontally (sideways) between the IDFs. A smartjack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. A demarc extension extends the demacation point from its original location to another location within the building.

When would you typically use and RJ-11 connector?

When connecting a phone to a phone line

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 The T568A standard switches the green and orange wires (along with their corresponding white wires). Use the order Blue-Orange-Green-Brown (BLOG), with the white wire first, for connecting wires on a 110 punchdown block.

In which of the following situations might you use an RJ-11 connector?

You want to connect your computer to the Internet wit a dial-up connection