IT1600 Test Out Master - Networking Questions

Which of the following correctly describe the most common format for expressing IPv6 addresses? (Select TWO.)

- 32 numbers, grouped using colons - Hexadecimal numbers

Which of the following statements about the Dynamic Host Configuration Protocol (DHCP) are true? (Select TWO)

- A workstation must request addressing information from a DHCP server - It can deliver a DNS server address in addition to the host IP address

You are configuring an ADSL connection. Which of the following will be part of the configuration? (Select TWO)

- Filters or splitters - RJ11 connectors

A technician is configuring the static TCP/IP settings on a client computer. Which of the following configurations are needed for internet communications? (Select THREE)

- IP address including a subnet mask (IPv4) or subnet prefix length (IPv6) - DNS server address - Default gateway address Explanation: At a minimum, three TCP/IP settings must be configured properly for a client to communicate with the internet: IP address (including subnet mask), a gateway, and DNS server.

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 are characteristics of coaxial network cable? (Select TWO)

- It has a conductor made from copper in the center of the cable - It has two concentric metallic conductors

Which of the following statements accurately describes how a modem works?

- 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

Which of the following identifies the prefix component of an IPv6 address? (Select TWO)

- The first four quartets of an IPv6 address - The first 64 bits of an IPv6 address

Which of the following identifies the interface ID component of an IPv6 address? (Select TWO)

- The last four quartets of an IPv6 address - The last 64 bits of an IPv6 address

Which of the following is true of a network using the 1000Base-T standard? (Select TWO)

- The network operates at one gigabit per second - The network uses copper UTP cables

Which of the following are features of Basic Rate ISDN (BRI)? (Select THREE)

- Two data channels - Dial-up connection - Always-on connection

Which of the following describes an IPv6 address? (Select TWO)

-128-bit address -Eight hexadecimal quartets

Which of the following are valid IPv6 addresses? (Select TWO)

-6384:1319:7700:7631:446A:5511:8940:2552 - 141:0:0:0:15:0:0:1

Which of the following options for connecting a computing device, such as a notebook computer or a tablet, to a cellular network? (Select FOUR)

-Use a USB cable to connect the device to the network through a smartphone. -Use an integrated cellular antennae to connect the device directly to the cellular network. -Use the device's Wi-Fi to connect to the network through a cellular Wi-Fi hot spot. -Use a USB cellular antennae to connect the device directly to the cellular network.

The following is an example of an IPv6 address: FECO:1319:7700:F631:446A:5511:CC40:25AB 1. Which part of the example IPv6 address is the prefix? 2. Which quartet in the example IPv6 prefix is used to identify the subnet? 3. Which part of the example IPv6 address is the interface ID?

1. FECO:1319:7700:F631 2. F631 3. 446A:5511:CC40:25AB

Match the network types on the left with the descriptions on the right.

1. Local Area Network (LAN) - A network in a small geographic area that typically uses wires to connect systems together - A set of subnets connected to each other, typically by wires, using at least one router 2. Personal Area Network (PAN) - A small network used for connecting devices, such as a notebook computer, a wireless headset, a wireless printer, and a smartphone 3. Metropolitan Area Network - A network that is typically owned and managed by a city as a public utility - A network that covers an area as small as a few city blocks to as large as an entire city 4. Wide Area Network (WAN) - A group of networks that are geographically isolated, but are connected to form a large internetwork. 5. Wireless Local Area Network (WLAN) - Similar to a standard LAN, but uses radio signals instead of wires to connect systems together

Match the fiber optic cable types on the left with the appropriate characters on the right.

1. Multimode - Data transfers through the core using more than one light rays - The core diameter is around 10 microns 2. Single mode - The core diameter is around 10 microns - Cable lengths can extend a great distance

Match the types of Ethernet connectivity devices on the left with the corresponding descriptions on the right. Each type of Ethernet connectivity device may be used once, more than once, or not at all.

1. Switch - Connects segments on the same subnet. Forwards signals to only the port connected to the destination device - Operates in full-duplex mode, meaning devices can both send and receive data at the same time 2. Bridge - Can be used to connect wireless clients to wired clients on the same network 3. Router - Connects two network segments that have different subnet addresses - Uses the IP address within a packet to move packets between networks 4. Hub - Connects segments on the same subnet. Repeats signals out to all other ports - Operates in half-duplex mode, meaning devices can either send or receive data at any given time

A Windows workstation is configured to receive its IP configuration information from a DHCP server on the company network. The user at the workstation reports that she cannot use email and is unable to reach the internet. Using the ipconfig command, you see that the workstation has been assigned the following special IP configuration: IP address: 169.254.0.1 Subnet mask: 255.255.0.0

1. What is the special IP configuration called? - Automatic Private IP Addressing (APIPA 2. Why did the workstation receive this type of configuration? - The workstation was unable to contact the DHCP server Explanation: If Windows can't contact a DHCP server, it will automatically assign itself an IP address within the range of 169.254.0.1 with subnet mask 255.255.0.0

Your network follows the 1000Base-T specifications for Gigabit Ethernet. What is the maximum cable segment length allowed?

100 meters

Which type of fiber optic cable supports 10 Gigabit Ethernet with a maximum segment length of up to 40 km?

10GBaseER single-mode

Which of the following IP address ranges is reserved for Automatic Private IP Addressing?

169.254.0.1 - 169.254.255.254

Given that your Windows workstation has Automatic Private IP Addressing (APIPA) implemented using default settings, which of the following TCP/IP addresses could be automatically assigned to the system should your DHCP server go down or become inaccessible?

169.254.1.26

Which of the following are valid IP addresses? (Select TWO)

2.2.2.2 172.16.1.26

An administrator configures a server to run the TCP/IP suite protocol that allows users to download files contained in specific directories on the server and also protects access to those files by requiring user authentication. Which of the following TCP/IP port numbers allow this protocol to work properly? (Select TWO)

20 21 Explanation: TCP/IP Suite protocol that allows users to download files from a server that protects access to the files by requiring user authentication to access specific directories on the server is FTP. FTP uses ports 20 and 21

Which of the following are not valid IP addresses? (Select THREE)

257.0.122.55 145.8.260.7 45.22.156.256 Explanation: IP addresses have a value between 0 and 255 within each octet.

To assist a user, a help desk technician is able to take advantage of a Windows proprietary network protocol that allows the technician to open a graphical interface to connect with the user's Windows computer. Which of the following TCP/IP port numbers is the default port used by this protocol?

3389 Explanation: Windows Remote Desktop Protocol (RDP) uses port 3389

While working on a Windows workstation, you've enabled Remote Desktop. Which of the following ports MUST be opened in the server's firewall to allow remote clients to access the desktop?

3389 RDP protocol runs on port 3389 by default

While making an online bank transaction, a customer checks to see that the web browser is displaying a lock icon that indicates that an encrypted TCP/IP suite protocol is being used. Which of the following TCP/IP port numbers does this protocol typically use when the browser encrypts its communications with the bank's web server?

443 Explanation: TCP/IP protocol web browsers use for encrypted communications is HTTPS. HTTPS uses port 443

You've just installed the DNS service on a Windows server. Which port must be opened in the server's firewall to allow clients to access the service?

53 DNS service runs on port 53 by default

Which of the following is the best definition for a LAN?

A network in a small geographic area, like in an office

You have a computer with an onboard LAN adapter. The LAN adapter has failed, and you are unable to connect the computer to the network. What should you do?

Add a network card using a PCI slot

You have a user who takes his laptop home every data after work. When he's working in the office, the laptop must get an IP address from the DHCP server so you configure it to obtain IP and DNS information automatically. When he's working from home, the laptop must use IP and DNS information that connects with his home network. Which IP addressing method can you use to make sure he gets a network connection at home?

Alternate IP configuration Explanation: With alternate IP addressing, the system's IPv4 Properties are configured on the General tab to use DHCP to automatically obtain TCP/IP configuration information. If a DHCP server cannot be contacted, the static IP configuration information on the IPv4 Properties Alternate Configuration tab is used

Which of the following is a valid MAC address?

C0-34-FF-15-01-8E Explanation: has a total of 12 hexadecimal numbers. Hexadecimal contain the numbers 0-9 and letters A-F

A group of workers attend a team-building retreat at a remote cabin. They can place calls on their mobile smartphones, but the cabin has no wired phone, television, or wired internet connectivity. The workers need to access an internet webpage using their laptop computers. Which of the following internet connection types might be available to the workers?

Cellular

Which of the following types of internet connection services can allow you to be truly mobile while maintaining your internet connection?

Cellular Explanation: Cellular networking uses the cellular phone infrastructure for internet access. The computing device, such as notebook or tablet, must have a cellular antennae to connect directly to the cellular network. You can travel anywhere and have internet as long as you are in a coverage area of a cellular service provider.

A technician is replacing a cable modem. The cable from the cable company has an inner solid wire conductor and an outer mesh conductor separated by PVC plastic insulation. Which of the following network cable types is being used?

Coaxial cable

Nate, an employee in your organization, has started to work from home two days a week. Nate uses the same company laptop while working in the office and working at home. Nate's laptop automatically connects to the wireless network in the office, but does not automatically connect to his home wireless network. Nate would like the laptop to connect automatically at home and at work. Which of the following would BEST allow this to happen?

Configure an alternate TCP/IP configuration on the laptop's wireless adapter to use a static IP address that is compatible with the home network.

Which type of network medium is used by an Integrated Services Digital Network (ISDN) adapter?

Copper telephone wire

While sorting through a box of cables in your storage room, you find one that matches the configuration shown in the image. Which of the following BEST describes the type of cable configuration and the purpose for which it would be used.

Crossover cable configuration used to connect computers directly to one another for networking.

As the IT technician for your company, you need to ensure that IP addresses are automatically assigned to hosts while at the same time preventing the same address from being assigned twice. Which of the following services would be BEST to use?

DHCP

Currently the users in your company are required to use their IP addresses when connecting to other hosts. Which of the following protocols would be the BEST to implement?

DNS

You want to implement name resolution on the Linux workstations in your company. Which protocol will you use to do this?

DNS

You are the IT technician for your company Which of the following mechanisms would BEST allow you to resolve a hostname into its associated IP address? (Select TWO)

DNS hosts file Explanation: You can use DNS or a local hosts file to map host names into IP addresses. In Windows this file is located in C:\Windows\system32\drivers\etc\.

A homeowner's connection to the internet is through an always-on modem that connects to existing telephone wiring and has a download speed of over 3 Mbps. The homeowner is able to make analog phone calls over the same wiring at the same time. Which of the following internet connection types is being used?

DSL Explanation: Digital Subscriber Line (DSL) uses a modem that connects to copper telephone lines, allows the use of the internet and phone calls at the same time, and has average download speeds of 3 Mbps to 7 Mbps.

Which TCP/IP configuration parameter identifies the router is used to reach hosts on remote networks?

Default gateway Explanation: The default gateway identifies the router to which packets for remote networks are sent.

Which of the following is a wired networking method most commonly used today by desktop PCs and other network devices to connect to a local area network?

Ethernet

Which of the following devices allows network communications to be transmitted over existing AC power lines?

Ethernet over Power Explanation: An Ethernet over Power device allows for network communications to be transmitted over existing AC power lines.

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 Explanation: Use an F-type connector for broadband cable connections that use coaxial cable.

Which of the following is a valid IPv6 address?

FEC0::AB:9007

You want to allow your users to download files form a server running the IP protocol. You want to protect access to the files by requiring user authentication to access specific directories on the server. Which IP protocol should you implement to provide this capability?

FTP Explanation: File Transfer Protocol (FTP) enables file transfers and supports user authentication.

A customer is upgrading the routers and switches in their network. The signal source in these network devices is a light-pulse. Which of the following network cabling options is MOST likely being used in this upgrade?

Fiber

What is a major benefit STP provides that UTP does not?

Greater resistance to interference Explanation: Shielded Twisted Pair (STP) has a grounded outer copper shield around the bundle of twisted pairs or around each pair. This provides added protection against EMI.

You are using a crimper to attach an RJ45 connector to a Cat 6 UTP cable. You need to use the T568A standard to connect the individual wires to the connector. Which wire should be connected to pin 1?

Green with white

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

Hub Explanation: A hub and a repeater send received signals out all other ports. These devices do not examine the frame of the packet contents.

Which of the following protocols is used by an email client to retrieve messages from an email server and gives users the option to keep mail messages on the server?

IMAP Explanation: IMAP allows a mail server to keep a copy of a user's messages on the server after they are downloaded to the mail client.

You want to use your Windows workstation to browse the websites on the internet. You use a broadband DSL connection to access the internet. Which network protocol must be installed on your workstation to do this?

IP

Which of the following network technologies is packaged as part of a BRI plan?

ISDN

Which actions allows you to access the internet on your laptop via a cellular network?

Install a cellular USB adapter in a open port on the laptop

You are setting up a small network in your office with one Windows server and 50 Windows workstations. You want to spend as little time as possible configuring the workstations with IP addressing information. What should you do?

Install and configure the DHCP service on your server. Explanation: In this scenario, you should configure the DHCP service to run on the network server. The DHCP client on each workstation can then contact the DHCP server when the workstations connect to the network to be automatically assigned IP addressing information.

Which of the following best describes how a switch functions?

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

A technician must press a cable connector's retaining tab to remove a faulty fiber optic network cable. Which of the following connectors does the cable use?

LC Explanation: LC connector is used with fiber optic cabling.

A SOHO's connection to the internet is through an antenna that sends and receives microwave signal to the ISP's antenna. There can be no obstacles on the direct path between the two antennae. Which of the following internet connection types is being used?

Line-of-sight wireless Explanation: Line-of-sight wireless uses microwave or radio frequency signals between two antennae. The direct patch between the antennae must not be blocked.

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 Explanation: In Mesh there is no central connecting point. Any host can communicate directly with any other host on the network.

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 Explanation: Mesh, each network devices is interconnected with all other network noes. If in the event of a failed link, the data has an alternate route to arrive to its destination

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 Explanation: The device in the middle of the star (typically hub) receives the message and forwards it on to all other devices

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.

To access the internet through the Publicly Switched Telephone Network (PSTN), what kind of connectivity device must you use?

Modem Explanation: Must have a modem that converts digital PC data into analog signals that can be transmitted through standard telephone lines.

A medical center wants to upgrade their network backbone to 10-Gigabit Ethernet (10 Gbps) so they can perform daily backups of large amounts of data to the secure on-site storage area network (SAN) without bogging down the network. Some of the backbone segments will have to reach between building that are close to 300 meters apart. Which of the following cable types BEST supports the 10-Gigabit Ethernet at the necessary lengths while keeping costs as low as possible?

Multimode fiber optic

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

Network interface card Explanation: The network interface card (NIC) allows a device to send and receive messages over the transmission media

A technician connects two network switches using a twisted pair cable. Neither switch supports auto-uplinking. Which of the following identifies the TIA wiring standard required on each end of the cable?

One end must be T568A, and the other must be T568B Explanation: A crossover cable connects two switches that don't support auto-uplinking. A crossover cable is constructed using the T568A wiring standard on one end and the T568B standard on the other end.

A group of workers in an office space communicate with each other on their smartphones and tablet devices through an ad hoc network linked using Bluetooth technology protocols. Which of the following network types is in use?

PAN

Which of the following terms refers to a network resource sharing model that uses access control lists saved on each computer?

Peer-to-peer

You are installing networking cable in the air space between the ceiling and the roof of a building. Which type of cabling should you use?

Plenum Explanation: Plenum cable is fire resistant and non-toxic, making it optimal for wiring above ceiling tiles.

A technician is running a network above a dropped ceiling that is also used for ventilation. The cable must be twisted pair and must be capable of Gigabit Ethernet speeds. Which of the following cables should be used?

Plenum-rated CAT-6a Explanation: Plenum-rated CAT-6a cables can transfer data at 10 Gbps and can be placed in plenum spaces used for ventilation

A user is configuring an email client application that plans to use a standard TCP/IP suite protocol to retrieve email messages from an email server. Which of the following TCP/IP suite protocols can be used to retrieve email messages?

Post Office Protocol (POP3) Internet Message Access Protocol (IMAP)

Which of the following devices can be used to distribute electrical power along with network data on twisted-pair Ethernet cabling (CAT 5 or higher)?

Power over Ethernet (PoE) Explanation: Power is usually supplied by a PoE-enabled Ethernet switch. PoE is handy for things like a surveillance camera where physical access to a power outlet may not be available.

A technician is installing a cable modem that supplies internet connectivity for a home office. Which of the following cabling types would be used to connect the cable modem to the cable wall outlet?

RG6 Explanation: Cable modems are connected to a cable wall outlet using coaxial cabling. RG6 is the most common coaxial cable used for this connection.

Which kind of connector do you use to connect a modem to a standard telephone line?

RJ11

Which connector is used with unshielded twisted pair (UTP) cable?

RJ45

You have recently been called to troubleshoot network connectivity problems at a user's workstation. You have found that the network cable runs across high-traffic areas on the floor, causing the cable to wear through and break. You have replaced the cable with a plenum-rated and shielded twisted pair cable. You would like to minimize the problem and prevent it from happening again. Which of the following will BEST protect the cable from further damage?

Run the cable through the ceiling area instead of across the floor.

Which protocol is used to send email messages from a mail client to a mail server?

SMTP

Which of the following tools allow remote server management? (Select TWO)

SSH Telnet Explanation: Both Telnet and SSH are tools for remote server management. However, you should avoid using Telnet as it sends all data in clear text on the network.

A healthcare organization provides mobile clinics throughout the world and needs to transfer patients' statistical data to a central database via the internet. Which network technology should you select to ensure network connectivity for any clinic located anywhere in the world, even remote areas?

Satellite Explanation: Satellite capability is available even in areas that do not have a local network infrastructure. Satellite requires a local portable transmitted with an antenna directed skyward, to a satellite. Satellite service providers offer nearly 100% global network coverage by maintaining a series of satellites that circle the earth in geosynchronous orbit.

Match each port number on the left with its associated protocols on the right

Secure Shell (SSH): 22 Apple Filing Protocol (AFP): 548 HTTP over SSL (HTTPS): 443 Hypertext Transfer Protocol (HTTP): 80 Server Message Block (SMB/CIFS) directly over TCP: 445 Service Location Protocol (SLP): 427 Internet Message Access Protocol (IMAP): 143

An 8-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 2-8 Explanation: The switch does not know the port that is used to reach the destination device, it will send the frame out all ports except for the port on which the frame was received. After the switch learns the port that is used to reach the destination device, it will send the frame out only that port

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

Star

While setting up a home office, a technician disables the DHCP service on the office router, but does not want to rely on link-local addressing. Which of the following IP addressing methods should be used?

Static

A host on your network that provides a service that requires the server to always use the same IP address. Which IP addressing method can you use to manually assign the specific IP address?

Static IP addressing Explanation: Static IP addressing lets you manually assign all configuration values. Static addressing is prone to error and should only be used under the following conditions: - The network has a small number of hosts - The network will not change or grow - You have some hosts that must always use the same IP address

What device is used to create a physical star topology?

Switch

Which of the following LAN devices receives a signal on one port and forwards that signal only to the port where the destination device is connected?

Switch

A technician determines that an older network hub that connects 24 workstations is performing poorly due to excessive network collisions. Best replacement?

Switch Explanation: A switch maintains a table of MAC addresses by port and forwards network frames to only the port that matches the MAC address. This significantly reduces collisions.

Which of the following describes the part of the IPv6 address that identifies the subnet address?

The last quartet in the IPv6 address prefix

You are installing a satellite connection so your home office can connect to the internet. Which of the following statements is true?

The satellite dish must be pointed in the correct direction for communicating with the satellite.

You are a software developer, and you are creating a multimedia streaming application. Data will be streamed from your streaming server to streaming clients over IP networks. Which transport protocol should your application use to send data between the clients and the server?

UDP Explanation: User Datagram Protocol (UDP) can be used with IP protocol to create unacknowledged connections between the server application and its clients. Because packets are sent unacknowledged, latency will be dramatically reduced.

Which of the following protocols carry phone calls over an IP-based network?

VoIP

You are the network technician for a small company. One of the types of cable available to you is an RJ45 cable. Which of the following best describes where this cable would most likely be used?

Voice over IP connection (VoIP)

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

You are talking with a customer support technician on the telephone. The technician recommends downloading a particular driver from the internet. When you try to connect to the internet using your dial-up modem, you can't. What is the problem?

You need to hang up

You are the computer specialist in a small business. Your company server is named FS1 and has an IP address of 10.0.0.2. The hardware in your company server started to experience intermittent failures, so you transferred the shares on the server to a spare server and took the main server offline. The spare server has an IP address of 10.0.0.3. You edit the existing A record for FS1 on your company's DNS server and redirect the hostname to the spare server's IP address of 10.0.0.3. Afterward, most users are able to access the shares on the spare server by hostname, but several users cannot. Instead, they see an error message indicating that the FS1 server could not be found. Enter the command you can run from the command prompt on these workstations that will allow them to access the shares on FS1 without performing a full restart

ipconfig /flushdns Explanation: Workstations maintain a cache of recently-resolved DNS names. When you use a DNS name, the computer first checks its cache. If the name is in the cache, the corresponding IP address is used. This can sometimes cause problems if the IP address of a host has changed. Old values in the cache might continue to be used for at time, making communication using the DNS name impossible. To correct the problem on a Windows computer, run ipconfig /flushdns to delete the local DNS name cache