TestOut PC Pro Chapter 6
Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents?
Hub
Your network follows the 1000Base-T specifications for Gigabit Ethernet. Which of the following 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
What port number is Internet Message Access Protocol) (IMAP)?
143
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
What port number is Secure Shell (SSH)?
22
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
What port number is Service Location Protocol (SLP)?
427
What port number is HTTP over SSL (HTTPS)?
443
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
What port number is Server Message Block (SMB/CIFS) directly over TCP
445
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 because it is what DNS runs on
What port number is Apple Filing Protocol (AFP)?
548
What port number is Hypertext Transfer Protocol (HTTP)?
80
Which of the following is the best definition for a LAN?
A network in a small geographic area, like in an office.
Internetwork
A network with geographically disperse connections that connect multiple LANs.
Star topology
A physical star topology uses a central connecting device. All the devices on the network connect to this central connecting device. This is the most commonly used physical topology today. With a logical star topology, data is sent directly to the intended device only. For example, when one computer wants to send data to another computer, the data is first sent to the central connecting device. The central connecting device then analyzes the data and forwards it to the intended computer.
Subnet
A portion of a network with a common network address.
Which kind of connector do you use to connect a modem to a standard telephone line?
A standard telephone line connector is an RJ11
Difference between RJ45, RJ11, F-Type, and RG58
A standard telephone line connector is an RJ11. RJ45 jacks are used for Ethernet twisted pair cables. Video cards and monitors with a built-in TV tuner have an F-type video connector. RG58 is used for 10Base2 Ethernet networking (also called Thinnet).
MAC Address
A unique hexadecimal identifier burned into the ROM (physically assigned address) of every network interface.
Which of the following statements about the Dynamic Host Configuration Protocol (DHCP) are true?
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 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?
According to the T568A standard, the green with white wire should be connected to pin 1 in the RJ45 connector.
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 day 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?
Alternative IP Configuration
Can be used to connect wireless clients to wired clients on the same network.
Bridge
Bridges
Bridges learn the MAC addresses of computers connected on each side of the network and make forwarding decisions accordingly.
Which of the following is a valid MAC address?
C0-34-FF-15-01-8E A MAC, or hardware address, is a unique identifier hard coded on every network adapter card. A valid MAC address has a total of 12 hexadecimal numbers.
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 Coaxial cabling has an inner conductor that is a solid wire made of copper or copper-coated tin. The outer mesh conductor, or shield, is made of aluminum or tin-coated copper. A PVC plastic insulator surrounds the inner conductor and insulates the signal from the mesh conductor.
The different cabling
Coaxial cabling has an inner conductor that is a solid wire made of copper or copper-coated tin. The outer mesh conductor, or shield, is made of aluminum or tin-coated copper. A PVC plastic insulator surrounds the inner conductor and insulates the signal from the mesh conductor. Twisted pair cabling consists of pairs of insulated copper conductors that are twisted together to minimize crosstalk. Fiber optic cabling carries light signals through a glass or plastic core surrounded by cladding and sheathing. A straight-through cable is a twisted pair patch cable.
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
You want to implement name resolution on the Linux workstations in your company. Which protocol will you use to do this?
DNS
Currently, the users in your company are required to use their IP addresses when connecting to other hosts. Since IP addresses are difficult to remember, you want to implement a protocol on your network that allows computers to automatically find another host's IP address using a logical name. Which of the following protocols would be the BEST to implement?
DNS Domain Name System (DNS) is an internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. For example, the name www.mydomain.com would be identified with a specific IP address.
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?
DNS and hosts file
A technician is configuring the static TCP/IP settings on a client computer. Which of the following configurations are needed for internet communications?
DNS server address Default gateway address IP address including a subnet mask (IPv4) or subnet prefix length (IPv6)
Multimode
Data transfers through the core using more than one light rays. Cable lengths are limited in distance.
Which TCP/IP configuration parameter identifies the router that is used to reach hosts on remote networks?
Default Gateway
Network Interfaces
Devices that send and receive electrical signals.
Which of the following devices allows network communications to be transmitted over existing AC power lines?
Ethernet Over Power
Ethernet Naming Standard
Example. If you see 10GBASE-SR, using what you just learned, you could identify information about the Ethernet standard. Notice the number has a G after it. This G stands for gigabit. That tells you that the transmission speeds are 10 Gbps. It uses a base band signal and the network transmission medium is SR, or short range fiber optic.
You want to allow your users to download files from 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 (File Transfer Protocol)
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
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 Optic
Which of the following are advantages of using fiber optic cabling for a network, as opposed to other types of cabling?
Greater cable distances without a repeater Immunity to electromagnetic interference
What is a major benefit STP provides that UTP does not?
Greater resistance to interference
WAN
Group of LANs that are geographically isolated but are connected to form a large internetwork.
Ethernet Neteorks
Have a star topology and have a central connection point that is usually a switch.
Connects segments on the same subnet. Repeats signals out to all other ports.
Hub
Operates in half-duplex mode, meaning devices can either send or receive data at any given time.
Hub
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
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 Protocol
Ring topology
In a physical ring topology there is no central connecting point. Instead, you have point-to-point connections between network devices. Each device is connected to the device before it and after it. In a ring topology, each device is connected to only two other devices. In a logical ring topology, data is forwarded along the network by each computer. For instance, if one computer needs to send data to a computer on the other side of the ring, it sends the data to the computer next to it first. That computer checks to see if the data is for it, and since the data isn't, it forwards the data to the next computer in the ring. It keeps going to each computer till it reaches its destination.
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.
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 The LC connector is used with fiber optic cabling. It has a retaining tab that locks the connector in place.
A user is configuring an email client application and 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?
Internet Message Access Protocol (IMAP) Post Office Protocol (POP3)
Which of the following best describes how a switch functions?
It connects multiple cable segments or devices and forwards frames to the appropriate segment.
Which of the following statements accurately describes how a modem works? (
It demodulates analog data from a telephone network into digital PC data. It modulates digital data from the PC into analog data and transmits it on a telephone network.
Which of the following are characteristics of coaxial network cable?
It has a conductor made from copper in the center of the cable. It uses two concentric metallic conductors.
The different networks
LAN is a collection of connected subnets within the same organization. A MAN is a collection of interconnected networks within the same metropolitan area. A WAN is created by joining two or more LANs or MANs together. Finally, an internetwork is the collection of multiple networks that may be organized and managed by different organizations.
Bus topology
Let's begin with the bus topology. All devices are physically connected to each other by a single central cable. Suppose a computer wants to send data to the computer next to it on the central cable. In a logical bus topology, the data is sent to all the computers connected to the central cable. Each computer looks at the data it receives and determines whether the data is addressed to it or not. If the data isn't addressed to it, the computer discards the data. If the data is addressed to it, the computer accepts the data.
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 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 In a mesh topology, each network device is interconnected with all other network nodes. This creates multiple data paths. And in the event of a failed link, the data has an alternate route to arrive at its destination.
WMN
Mesh network that uses wireless connection only.
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. The device in the middle of the star (typically a 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.
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 buildings that are close to 300 meters apart. Which of the following cable types BEST supports the 10-Gigabit Ethernet at the necessary segments lengths while keeping costs as low as possible?
Mulitmode Fiber Optic
Fiber Optic cable type - Multi Mode
Multimode fiber optic cable has the following characteristics: Data transfers through the core using multiple light rays The core diameter is around 50 to 100 microns Cable lengths are limited in distance Fiber optic cable does not have a "dual mode" type.
Which network component connects a device to the transmission media and allows it to send and receive messages?
Network Interface Card
Client Server
Network in which hosts have specific roles.
MAN
Network the size of a few blocks to a metropolitan area.
half duplex vs full duplex
Networks can operate in two different modes, half duplex and full duplex. When operating in half-duplex mode, devices can either send data or receive data but not both at the same time. This is the mode that hub-based networks use. Like its name suggests, half-duplex mode cuts network bandwidth in half. Switches, on the other hand, operate in full-duplex mode. This means that devices can send and receive data at the same time, utilizing the entire network bandwidth. You can think of half duplex and full duplex as a two-way radio and a telephone. When using a two-way radio, only one person can talk at a time. The other person can only listen. When using a telephone, both parties can listen and talk at the same time.
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.
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
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 because it is fire resistant and non toxic making it optimal for installation in 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 cables can transfer data at 10 Gbps and can be placed in plenum spaces used for ventilation.
Difference between plenum rated cat-6a, riser rated cat-5e, Plenum-rated multimode fiber, and Riser-rated RG-58 cables
Plenum-rated CAT-6a cables can transfer data at 10 Gbps and can be placed in plenum spaces used for ventilation. Riser-rated RG-58 cables are coaxial and can transfer data at 10 Mbps. Plenum-rated cables can be used in riser applications, but riser-rated cables can't be used in plenum applications. Riser-rated CAT-5e cables can transfer data at 1 Gbps, but can't be used in plenum applications. Plenum-rated multimode fiber can transfer data at 10 Gbps, but is not twisted pair.
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
Extranet
Private network that uses internet technologies but its resources are made available to trusted external users.
Intranet
Private network that uses internet technologies. further.. intranet is like a miniature internet. An intranet is a private network, not a public one, but it uses many of the same technologies used on the internet. This intranet may or may not be connected to the public internet. For example, you could have an email server within a private network. Only people within the private network can access it, even though the network is connected to the internet. This way, you're using internet technology on the local private network
RG-6 and RG-59
RG-59 is used for video transmissions but was quickly replaced by RG-6 which is mainly used for cable televisions, satellite television, and cable modems.
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
Which connector is used with unshielded twisted pair (UTP) cable?
RJ45 *BNC and AUI are used with coaxial cables. DIX is an Ethernet protocol.
Connects two network segments that have different subnet addresses.
Router
Uses the IP address within a packet to move packets between networks.
Router
Protocols
Rules or standards that describe how hosts communicates and exchange data.
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 instead of the floor.
Which protocol is used to send email messages from a mail client to a mail server?
SMTP
WLAN
Same as LAN but uses wireless connection.
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.
WWAN
Similar to WLAN but uses different technology to connect to the internet. Also known as 3G or 4G networks.
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 allows this to happen?
Since the employee is able to connect in the office, you only need to configure an alternate TCP/IP configuration on the laptop's wireless adapter to use a static IP address.
Fiber optic cable type - Single Mode
Single mode fiber optic cable has the following characteristics: Data transfers through the core using a single light ray (the ray is also called a mode) The core diameter is around 10 microns Cable lengths can extend a great distance
LAN
Small geographic area network.
PAN
Small network for communication between devices.
Which of the following topologies connects each network device 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
A technician determines that an older network hub that connects 24 workstations is performing poorly due to excessive network collisions. Which of the following network devices would be the BEST replacement?
Switch
Connects segments on the same subnet. Forwards signals to only the port connected to the destination device.
Switch
Operates in full-duplex mode, meaning devices can both send and receive data at the same time.
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 switch offers guaranteed bandwidth to each port, unlike a hub, which shares bandwidth among all the network ports.
What device is used to create a physical star topology?
Switch. Can also use a hub though.
TCP (Transmission Control Protocol)
TCP is a connection-oriented protocol. To ensure reliable delivery of data, TCP requires the recipient of a network transmission to send an acknowledgement of each and every IP packet it receives to the sender. Packets that don't make it are retransmitted. This ensures that the data is delivered reliably.
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?
The 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.
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?
The Windows proprietary network protocol that allows the technician to open a graphical interface to connect with the user's Windows computer is Remote Desktop Protocol (RDP). By default, RDP uses port 3389.
Single Mode
The core diameter is around 10 microns. Cable lengths can extend a great distance.
Logical topology
The logical topology dictates how data is transferred on the physical topology. By way of analogy, the logical topology is similar to the traffic laws that dictate how traffic flows on a physical road.
Which of the following is true of a network using the 1000Base-T standard?
The network uses copper UTP cables. The network operates at one gigabit per second.
Basic difference between physical and logical topology
The physical topology describes the way the network is wired. The logical topology describes the way messages are sent.
Physical topology
The physical topology refers to the way a computer network is physically wired.
NIC (Network Interface Card)
This card creates the signals sent along the networking medium. Each host on a network needs to have a network interface card (NIC) installed in order to connect to an Ethernet network
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
UDP (User Datagram Protocol)
UDP is a connectionless protocol. Unlike TCP, UDP does not require acknowledgements. One of the key drawbacks of using TCP is the fact that its reliability introduces latency. For small data transmissions, such as sending an email, moderate latency is not a problem. However, for large data transmissions, such as video or audio streaming, the latency associated with TCP is unacceptable. By using UDP instead, the latency of the transmission is significantly reduced, with the assumption that an occasional lost packet won't be detrimental.
Switches vs Hubs
Unlike hubs, switches know the host connected to each port. With this information, switches are able to create what's called a packet switched network (PSN). When information is sent from one computer to another, the switch looks at the data, determines which host it's addressed to based on the mac address, and sends it out to that host port only. By directing traffic like this, switches eliminate the bottleneck problem and allow the network to operate in full-duplex mode.
You are the network technician for a small company. One of your responsibilities is to ensure that all new hardware is connected and functioning properly. You have several different types of connections that are used for various types of hardware. 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
Which of the following protocols carry phone calls over an IP-based network?
VolP
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.
Mesh Networking topology
With the mesh networking topology, each device on the network has a point-to-point connection to every other device on the network. For example, each of four computers has a direct connection to the other three computers. With this topology, the more computers you add, the more connections you need.
Nodes or hosts
computers
Which of the following terms refers to a network resource sharing model that uses access control lists saved on each computer?
peer to peer