Practice Questions

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

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

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 Star Bus Full mesh

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

- Star Mesh Ring BuS

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 geographic network types is typically managed by a city as a public utility?

-Metropolitan area network (MAN) Personal area network (PAN) Wide area network (WAN) Local area network (LAN)

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

1) It uses two concentric metallic conductors 2) It has a conductor made from copper in the center of the cable

Which of the following uses metal clips placed over plastic slots to connect individual copper wires?

110 block

You've recently installed a new Windows server. To ensure system time accuracy, you've loaded an application that synchronizes the hardware clock on the server with an external time source on the internet. Now you must configure your network firewall to allow time synchronization traffic through. Which of the following ports are you MOST LIKELY to open on the firewall?

123

Which port number is used by SNMP?

161

Which port does Telnet use?

23

You're configuring a network firewall to allow SMTP outbound email traffic and POP3 inbound email traffic. Which of the following TCP/IP ports should you open on the firewall? (Select two.)

25 110

Multi-mode fiber is designed to operate at which of the following wavelengths?

850 nm and 1300 nm

While viewing the status of interfaces on a Cisco switch, you see an abnormally large number of CRC errors on one interface. This interface is connected to a user's workstation that is located in a cubicle on the second floor. What could cause this to happen?

A strong EMI emitter near the cable connected to that interface.

During network transmission, data is transferred to various routers, which forward the data to the appropriate network. If the source and destination network addresses reside on the same network, which protocol is used to determine the destination IP's MAC address?

ARP

You need to replace a fiber optic cable that's connecting two switches together. You inspect the existing cable and determine that it uses LC connectors. You also notice that the cable's ferrule has a slight slant to it. Which polish grade should you use to replace the existing cable?

Angled Physical Contact polish

Match each networking function or device on the left with its associated OSI model layer on the right.

Application layer ~ HTTP Presentation layer - Encapsulation Session layer - Session ID number Transport layer - Port number Network layer - Router Data Link layer - Switch Physical layer - Modem

You're working with an older 10Base2 Ethernet network. Which of the following connector types will you MOST LIKELY encounter?

BNC

Match Each TCP/IP layer with its function

Breaks the data into pieces. - Transport Prepares the data to be sent. - Application ads physical addesses. - Link Adds logical addresses. - Internet

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?

Bus - Mesh Ring Star

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

Cable and connector specifications - Physical network device identification Physical topology - Data transmission between hosts Digital data conversion

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

Cable and connector specifications Physical network device identification Physical topology Data transmission between hosts Digital data conversion

You are making Ethernet drop cables using Cat5e cables 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

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

Cat 6

What is the purpose of a frame check sequence (FCS) footer?

Checksum Error Detection

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

Connection establishment

Which of the following features does UDP provide? (Select two.)

Connectionless datagram services Low overhead

What is the basic purpose of the OSI Physical layer?

Coordinate rules for sending and receiving electrical signals.

You've 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's only running at 100 Mbps, Which of the following is MOST LIKELY the cause?

Crosstalk

Which of the following describes the point where the service provider's responsibility to install and maintain wiring and equipment ends and the customer's begins?

Demarc

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

Which of the following is the process of breaking a message into packets, adding controls and other information, and then transmitting the message through the transmission medium?

Encapsulation

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.

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

Extranet - Client-server Peer-to-peer Intranet

You've just signed up for a broadband home internet service that uses coaxial cabling. Which connector type will you MOST LIKELY use?

F-type

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

ICMP

What role does ARP play in the routing process?

If the router does not know a destination devices MAC address, it sends an ARP broadcast containing the IP address and requesting the MAC address

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

Immunity to electromagnetic interference Greater cable distances without a repeater

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

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

Which recommendation should you follow while using 110 blocks for connecting Cat5 and higher data cables?

Keep wire pairs twisted up to within one half of an inch of the connector.

Workstation3 has started communicating with Workstation2. It sends a frame to the default gateway. Identify the Layer 2 and Layer 3 addresses used by the Cisco 2600 router to forward the data to Workstation2 by dragging the corresponding address from the list on the left to its location on the right.

Layer 2 source address - 000b5f2a2222 Layer 3 source address - 192.168.11.11 Layer 2 destination address - 080046987654 Layer 3 destination address - 192.168.10.12

Workstation2 needs to send data to Workstation3. Identify the Layer 2 and Layer 3 addresses Workstation2 will use to send the data by dragging the corresponding address from the list on the left to its location on the right.

Layer 2 source address - 080046987654 Layer 3 source address - 192.168.10.12 Layer 2 destination address - 000b5f2a2222 Layer 3 destination address - 192.168.11.11

Which of the following terms identifies the wiring closet in the basement or 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 topologies connects all devices to a trunk cable?

Mesh Star Ring - Bus

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

Mesh Star • Ring Bus

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

Messages are sent to all devices connected to the network. - Messages travel from one device to the next until they reach the destination device. Messages are sent to a central device that forwards them to the destination devices. Messages are sent directly to the destination device only.

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

Messages travel from one device to the next until they reach the destination device. - Messages are broadcast to all devices connected to the network. Messages are sent directly to the correct destination device. Messages are sent to a central device that forwards them to the destination devices.

You want to measure the voltage, amps, and ohms of various devices. Which tool should you use?

Multimeter

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

Multiple access Client-server Polling -Peer-to-peer

You have a large TCP/IP network and want to keep a host's real-time clock synchronized. Which protocol should you use?

NTP

You're installing network wiring for a new Ethernet network at your company's main office building. The project specifications call for Cat 5e UP 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 closer inspection, it appears very similar to the Cat 5e wiring. To finish the project, should you use the Cat 3 cabling as a substitute for the Cat 5e cabling?

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

You're building a new network for a small financial services startup company. Security is paramount, so each organization within the company will have their own network segments separated by routers. Funds are limited, and you've been asked to keep costs to a minimum. You've acquired a used fiber optic switch, and you want to use it to create a fiber optic backbone that interconnects all of the routers. You've purchased several used multi-mode GBIC modules on eBay that you'll install on each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRI connectors. You've purchased several used 1-meter, multi-mode patch cables from Amazon. But when they arrived, you noticed that they use LC connectors. Fortunately, with some force, you found that you're able to get the LC connectors on the cables to lock into the MTR| connectors on the GBIC modules and on the switch. Will this implementation work?

No. You should purchase patch cables that use MRI connectors.

You're building a new network for a small financial services startup 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've been asked to keep costs to a minimum. You've acquired a used fiber optic switch, and you want to use it to create a fiber optic backbone that interconnects all of the routers. You've purchased several used single-mode GBIC modules on eBay that you'll install on each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRI 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.

You're working with an existing fiber optic installation in your building. You want to know the length of each cable that runs through the walls. Which tool should you use?

OTDR

Which of the following terminates individual wires from a 25-pair or 100-pair cable using female RI45 ports?

Patch panel

You need to terminate a Cat6 UP cable with an RJ45 connector. Your organization's IT policy states that all cable connectors must be wired according to TIA568B standards. Drag the UP wire on the left to the correct pin on the RJ45 connector on the right.

Pin 1 V 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 Pin 7 Pin 8 V Solid green White with brown stripe Solid brown

You're 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'd like to run your Ethernet cables in this area. Which type of cable must you use?

Plenum-rated cable

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.

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

Which term does the SI model use that's different from the TCP/IP model in reference to the terms frame, packet, and segment?

Protocol Data Unit (PDU)

Which 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, but you can't find anymore RG-6 cabling. Which cable type could you use instead?

RG-59

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

RJ45

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

RJ48c

Routing data between computers on a network requires several mappings between different addresses. Which of the following statements is true?

Routers use ARP to resolve known IP addresses into MAC addresses by broadcasting requests to the network.

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

Routes messages between networks

Your company has just acquired another company in the same city. You need to integrate the two email systems so that messages can be exchanged between email servers. Currently, each network uses an email package from a different vendor Which TCP/IP protocol enables message exchange between systems?

SMTP

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

TCP is a connection-oriented protocol that uses a three-way handshake to establish a connection to a system port. Computer 1 sends a SYN packet to Computer 2. Which packet does Computer 2 send back?

SYN/ACK

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

Single-mode fiber

Which of the following cables offers the best protection against EMI?

Single-mode fiber optic

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

Smartjack

You're an application developer, and you're writing a program for exchanging video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery. Which TCP/1P protocol provides this capability?

TCP

Which of the following network services or protocols uses TCP/1P port 69?

TFTP

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

They use a housing and latch system similar to an RI45 UP connector. They are half the size of standard connectors.

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.

During TCP/IP communication between two network hosts, information is encapsulated on the sending host and decapsulated on the receiving host using the OSI model. Match the information format on the left with the appropriate layer of the OSI model on the right.

Transport layer - Segments Network layer - Packets Data Link layer - Frames Physical layer - Bits

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.)

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

You have a network that occupies all three floors of a building. The WAN service provider has installed the line in a wiring 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

Why might you use an Rj11 connector?

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

You've connected a cable certifier to an RI45 wall jack, and the output shown below is displayed on the device. What does this output indicate? (Select two.)

cable is functioning correctly. This is a crossover cable