Network + study guide 3
Characteristic of Coaxial cable?
+ Has conductor made from copper in the center. + Uses 2 concentric metallic conductors. + The end of the cable must be terminated.
You are configuring the DHCP Relay Agent role on a Windows server. Which of the following is a required step for the configuration? -Configure the Windows server to be on the same subnet as the DHCP server. -Specify which server network interface the agent listens on for DHCP messages. -Connect an RFC 1542 compliant router to the Windows server. -Use the ip helper-address command to specify the remote DHCP server.
-Specify which server network interface the agent listens on for DHCP messages.
You need to configure a Cisco RFC 1542-compliant router to forward any received DHCP frames to the appropriate subnet. The address of the remote DHCP server is 172.16.30.1 Which of the following commands would you use to configure the router? -ifconfig 172.16.30.1 -ip address dhcp 172.16.30.1 -host 172.16.30.1 -ip helper-address 172.16.30.1
-ip helper-address 172.16.30.1
Which of the following use the CSMA/CD access method? Select all that apply.
10BaseT 100BaseT
What is the network address and subnet mask used by APIPA?
255.255.0.0 169.254.0.0
Use the exhibit to match the connector type on the corresponding letter on the right.
A=DB-25 B=DB-9 C=RJ45 D=RJ11 E=LC F=BNC G=F-Type
You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0 Which of the following describes the address type?
Classless
You want to create a rollover cable that has an RJ-45 connector on both ends. How should you connect the wires within the connectors?
Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5
You have two switches that you need to connect using their uplink ports. The switches do not support auto-MDI. which type of cable should you use?
Crossover
You need to transfer data from one laptop to another and would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use?
Crossover
You want the LAN port on a router to the uplink port on a switch. The switch does not support auto-MDI. Which type of cable should you use?
Crossover
You have a TCP/IP network with 50 hosts. There has been inconsistant communication problems between hosts. You run a protocol analyzer and discover that two hosts have the same IP address assigned. Which protocol can you implement on your network to help prevent problems such as this?
DHCP
What connector use for broadband?
F-type (RG-59 and RG-6).
Which of the following strategies are used to prevent duplicate IP addresses being used on a network?
Install a DHCP server on the network. Use Automatic Private IP Addressing.
Users are complaining that sometimes network communications are slow. You use a protocol analyzer and find that packets are being corrupted as they pass through a switch. You also notice that this only seems to happen when the elevator is running. What should you do?
Install shielded cables near the elevator.
You have a small network with a single subnet connected to the Internet as shown in the Exhibit. The router has been assigned the 2 addresses shown. You need to manually configure the workstation to connect to the network. The workstation should use RouterA as the default gateway and DNS1 as the DNS server address. From the drop-down options, select the appropriate parameters to configure the workstations TCP/IP settings.
Ip Address 192.168.12.46 Subnet 255.255.255.240 Default gateway 192.168.12.34 DNS Server 198.162.1.22
Which two of the following statementsabout the Dynamic Host Configuration Protocol (DHCP) are true?
It can deliver other configuration information in addition to IP addresses. A DHCP server assigns addresses to requesting hosts.
Which of the following connectors are used with fiber optic cables and include both cables in a single connector? SC, LC, BNC, MTRJ.
LC, MTRJ.
You've connected a cable certifier to an RJ45 wall jack, and the output shown below is displayed on the device. What does this output indicate? (Select two.)
Pin 4 & 6 are open.
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
Listed below are several DNS record types. Match the record the on the left with its function on the right.
Points a hostname to an IPv4 A Provides alternate names to hosts that already have a host record. CNAME Points an IP address to a hostname PTR Points a hostname to an IPv6 address AAAA identifies servers that can be used to deliver mail. MX
CorpServ is a small company with 14 client systems and a network printer. Because there are only a limited number of networked systems, you decide to use APIPA addressing for the network. With APIPA configured, all systems are able to communicate with each other but you are having trouble configuring Internet access. What is the likely cause of the problem?
Private addresses cannot directly communicate to hosts outside the local subnet.
Best protection against EMI?
RG-6.
which of the following connectors is used with Ethernet 10BaseT networks?
RJ-45
What connector use for Ethernet network?
RJ-45.
Which of the following are requirements of the 1000BaseT Ethernet standards? (Select three.) RJ45 connectors The cable length must be less than or equal to 1000m Cat 5e cabling SC or ST connectors Cat 5 cabling The cable length must be less than or equal to 100m
RJ45 connectors Cat 5e cabling The cable length must be less than or equal to 100m
Which of the following connector types would you most likely use to connect to a T1 WAN service?
RJ48c
Which of the following standards is typically used in a rollover cable?
RS-232
You have purchased a new router that you need to configure. You need to connect a workstation to the router's console port to complete the configuration tasks. Which type of cable would you most likely use?
Rollover
You have a Windows Server 2016 system that you want to use as a DHCP relay agent. Which Windows Server 2016 service would you use to do this? -Network Policy Server -DNS -Internet Information Services (IIS) Manager -Routing and Remote Access
Routing and Remote access
What connector use for fiber-optic cables?
ST and SC.
Which of the following connectors usually require polishing as part of the assembly process? BNC, ST, SC, RJ45.
ST, SC.
Which of the following connectors is typically used on one end of the rollover cable?
Serial
Of the following cables, which offer the best protection against EMI? Cat 5, Single-mode fiber optic, RG-6, Cat 5e.
Single-mode fiber optic.
Angela is the network administrator for a rapidly growing company with a 100BaseT network. Users have recently complained about slow file transfers. In a check of network traffic, Angela discovers a high number of collisions. Which connectivity device would best reduce the number of collisions and provide future growth?
Switch
Which is true about single-mode fiber optic network cabling?
The central core is smaller than standard multi-mode fiber optic cabling core.
Which of the following terms are often synonymous with or made possible with CIDR? (2 answers)
VLSM Classless
Due to widespread network expansion, you have decided to upgrade the network by configuring a DHCP sever for the network uses Linux, Windows, and Mac OS X client systems. You configure the server to distribute IP addresses from 12.168.2.1 to address 192.168.2.100. You use the subnet mask of 255.255.255.0. after making al setting changes on the DHCP sever, you reboot each client system but they are not able to obtain an ip address from the dhcp server. Which of the following would explain the failure?
the clients must be configured to obtain ip addressing from a dhcp server
Which are advantages of using fiber optic cabling for a network?
•Greater cable distances without a repeater. •Immunity to electromagnetic interference.
Which topologies is a CAN able to use? (Select three.)
- Bus - Ring - Star
Consider the 850 nm multimode fiber optic cable shown below. How much loss can you expect between the transmitter and the receiver? -0.9 dB -0.3 dB -1.2 dB -0.6 dB
-1.2 dB
Which of the following are included as part of Data Link layer specifications?
-Controlling how messages are propagated trough the network. -Identifying physical network devices.
In the OSI Model, which of the following functions are performed at the Presentation Layer?
-Encrypt and compress data -Specify data format (such as file formats)
In the OSI Model, which of the following functions are performed at the Application Layer?
-Integration of network functionality into the host operating system -Enabling communication between network clients and services
Which of the following are functions of the MAC sublayer?
-Letting devices on the network have access to the LAN -Defining a unique hardware address for each device on the network
The Data Link Layer of the OSI model is comprised of two sublayers. What are they?
-MAC (media access control) -LLC (logical link control)
Which of the following functions are performed by the OSI Transport Layer?
-Reliable message delivery -End-to-end flow control -Date segmentation and reassembly
Your network follows the 100BaseTX specifications for Fast Ethernet. What is the maximum cable segment length allowed?
100 meters
You want to implement an Ethernet network at very long distances using fiber optic cables. Which standard and cable type would you choose? (Select two.) 1000BaseLX Single-mode fiber Muti-mode fiber 1000BaseSX 1000BaseCX
1000 BaseLX Single-mode fiber
What is the binary format for the following decimal IP address? 131.9.202.111
10000011.00001001.11001010.01101111
You have been tasked with designing a high-speed Ethernet network. Your client's building already has 150-ohm shielded twisted pair (STP) wiring installed. Due to budget constraints, they have asked you to reuse the existing wiring instead of installing new fiber optic cabling. Which Ethernet standard could you implement in this situation?
1000BaseCX
Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with single-mode fiber optic cable?
1000BaseLX
Which Gigabit Ethernet standard uses multimode fiber optic cabling and supports network segments up to a maximum of 550 meters long?
1000BaseSX
You have been tasked with designing an Ethernet network. Your client needs to implement a very high-speed network backbone between campus buildings, some of which are around 300 meters apart. Multi-mode fiber optic cabling has already been installed between buildings. Your client has asked that you use the existing cabling. Which Ethernet standard meets these guidelines? (Choose two.) 1000BaseSX 10BaseFL 10GBaseSR 1000BaseCX 10GBaseER 1000BaseT
1000BaseSX 10GBaseSR
Which of the following Ethernet standards uses fiber-optic cabling? (Select two.)Which of the following Ethernet standards uses fiber-optic cabling? (Select two.) 1000BaseCX 100BaseT4 100BaseFX 100BaseTX 1000BaseLX
100BaseFX 1000BaseLX
Assuming the network is indicated by the default portion of the IP address, which three of the following IP addresses belong to the class A network 114.0.0.0? (3)
114.0.0.15 114.122.66.12 114.58.12.0
Match each decimal value on the left with the corresponding hexadecimal value on the right. Not all decimal values have corresponding hexadecimal value.
11:17 B:11 D:13 F:15 C:12 10:16
A host on the network has an IP address of 129.11.99.78 using the default subnet mask, how would you identify the address and mask using CIDR notation?
129.11.99.78/16
Which of the following is the last IP address that can be assigned to hosts on the 166.70.0.0 network using the default subnet mask?
166.70.255.254
Which of the following IP addresses ranges is reserved for Automatic Private IP Addressing?
169.254.0.1 - 169.254.255.254
You've decided to use a subnet mask of 255.255.192.0 on the 172.17.0.0 network to create four seperate subnets. Which network IDs will be assigned to these subnets in this configuration? (2 answers)
172.17.128.0 172.17.0.0
Your network has been assigned a class B network address of 179.113.0.0 Which three of the following addresses can be assigned to hosts on your network?
179.113.89.0 179.113.65.12 179.113.0.118
Your network has been assigned the class C network address 200.78.151.0 Which of the following addresses can be assigned to hosts on your network? (3 answers)
200.78.151.252 200.78.151.111 200.78.151.12
You are planning a network for an educational campus. Due to the size of the buildings and the distance between them, you have elected to use 10BaseFL hubs, cabling, and network interface cards. What is the maximum length for the network cable between a workstation and a hub?
2000 meters
What is the decimal format for the following IP address?
206.58170.67
Your network follows the 100BaseFX specifications for Fast Ethernet and uses half-duplex multimode cable. What is the maximum cable segment length allowed?
412 meters
While viewing the status of the 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 located in a cubicle on the second floor. What could cause this to happen? Two hosts on the network with the same MAC address. An incorrect subnet mask configured on the workstation. A strong EMI emitter near the cable run connected to that interface. Collisions between two or more network hosts.
A strong EMI emitter near the cable run connected to that interface.
You manage the two-location network shown in the exhibit. Workstations and servers at each location connect to a patch panel using behind-the-wall wiring. The patch panel then connects network hosts to one of three 1000BASE-T switches. Routers are implemented at each location together using a private WAN. The switch ports have auto-MDIX disabled.
A=Cat 6 straight-through UTP B=Cat 6 straight-through UTP C=Cat 6 crossover UTP D=Single-mode fiber optic
Which of the following is a valid MAC address?
AB.07.CF.62.16.BD
A host wants to send a message to another host with the IP address 115.99.08.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address?
ARP
You have a network connected using a physical star topology. One of the drop cables that connects a workstation has been removed. Which of the following best describes what effect this will have on network communications?
All devices except the device with the drop cable will be able to communicate.
During a network infrastructure upgrade, you have replaced two 10 Mbps hubs with switches and upgraded from Category 3 UTP cable to Category 5e. During the process, you accidentally cut the Cat 5e patch cable that stretches from the network printer to the upgraded switch. What is the impact on the network?
All network nodes EXCEPT the printer will be available.
You are implementing a SOHO network for a local business. The ISP has already installed and connected a cable modem in the business. The business has four computers that need to communicate with each other and the internet. The ISP's cable modem has only one RJ45 port. You need to set up the network with the following in mind: Spend as little money as possible, do not purchase unnecessary equipment, computers need to have a gigabit connection to the network, and new devices should not require management or configuration. You examine each computer and notice only one of the four computers has a wireless NIC; they all have Ethernet NICs. What should you purchase?
An unmanaged switch and CAT5e cabling
Which type of polish grade uses green-colored connectors to help you keep from using the wrong connector type? Angled Physical Contact (APC) Ultra Physical Contact (UPC) Physical Contact (PC) Super Physical Contact (SPC)
Angled Physical Contact (APC)
You need to replace a fiber optic cable that is connecting two switches together. You inspect the existing fiber cable and determine that it uses LC connectors. You also notice 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 Flat Physical Contact polish Physical Contact polish Ultra Physical Contact polish
Angled Physical Contact polish
match each Networking function or device on the left with its associated OSI model
Application--HTTP Presentation--ASCII Session--Session ID Number Transport--Port Numbers Network--Router Data Link--Switch Physical--Modem
What connector use for 10Base2?
BNC connector (RG-58).
Which topology connects all devices to a trunk cable?
Bus
Which of the following physical topologies are used with Ethernet networks? (Select two)
Bus Star
Which of the following is a valid MAC address?
C0-34-FF-15-01-8E
The media access control method of all Ethernet networks is _______________.
CSMA/CD
Which of the following cable types often includes a solid plastic core?
Cat 6
What type of cabling is used with 100BaseTX Fast Ethernet networks?
Cat5 or higher
What is the minimum cable specification that supports 1000 Mbps Ethernet? Cat 4 Cat 5 Cat 5e Cat 6 Cat 7
Cat5e
You manage a network that uses 1000BaseT Ethernet. You find that one device communicates on the network at only 100 Mbps. Which tool should you use to test the drop cable and the connection to the network? Certifier Toner probe Multimeter Cable tester TDR
Certifier
You have implemented a network where hosts are assigned specific roles, such as file sharing and printing roles. Other hosts access those resources, but do not host services of their own. What type of network do you have?
Client-server
Which of the following tasks is associated with the Session layer?
Connection establishment
What is the basic purpose of the OSI Physical layer
Coordinates rules for transmitting bits.
You have a network with 50 workstations. You want to automatically configure workstations with the IP address, subnet mask, and default gateway values. Which device should you use?
DHCP Server.
You want to implement a protocol on your network that allows computers to find the IP address of a host from a logical name. Which protocol should you implement?
DNS
You need to enable hosts on your network to find the IP address of logical names such as srv1.myserver.com Which device would you use?
DNS server
which of the following services automatically creates and deletes host records wen an ip address lease is created or released?
DYNAMIC DNS
A switch is associated with which OSI model layer?
Data Link
Your company purchases a new bridge that filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning?
Data Link
You have a small network as shown, you have configured the IP address and subnet mask on wrk1. You want to be able to use wrk1 to browse the Internet to connect to sites like cisco.com Which other parameters are required on the workstation? (2 answers)
Default gateway DNS server address
You have a network connected using a full physical mesh topology. The link between device A and device B is broken. Which of the following best describes what effect this will have on network communications?
Device A will be able to communicate with all other devices.
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 EMI FEXT NEXT Attenuation
Echo
You are moving a client to a new location within an Ethernet network. Previous to the move, the client system did not have any difficulty accessing the network. During the relocation, you attach a patch cable from the client system to the wall jack and from the patch panel to the switch. Once connected you do not get a link light on the network card or the switch. You swap out the cable running between the patch panel and the switch with a known working one but you can still not connect. Which of the following might you suspect as the problem?
Failed patch cable between the client system and the wall jack.
You have just connected four new computer systems to an Ethernet switch using spare patch cables. After the installation, only three systems are able to access the network. You verify all client network settings and replace the network card in the failed system. The client is still unable to access the network. Which of the following might you suspect is the real cause of the problem?
Failed patch cable.
Upon conducting a visual inspection of the server room, you see that a switch displays LED collision lights that are continually lit. You check the LED on the corresponding workstation and see that it is flashing rapidly even though it is not sending or receiving network traffic at that time. What is the cause of the network collision?
Faulty network card
Ethernet 100BaseFX networks use what type of cabling?
Fiber optic
Which of the following is the best service to deploy to protect your private network from a public untrusted network?
Firewall
You are the administrator of your company's network. You want to prevent unauthorized access to your intranet from the Internet. Which of the following should you implement?
Firewall
You are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the Internet to provide users with Internet access. Since doing so, it has became to your attention an intruder has invaded your network from the Internet on three separate occasions. What type of network hardware should you implement to prevent this from happening again?
Firewall
What type of module might a switch use to allow it to modify the media type supported by a switch port? (Select two)
GBIC SFP
Which of the following devices does not segment the network?
Hub
Which of the following devices operates at teh OSI model Layer 1?
Hub
Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet content? (2)
Hub & Repeater
You have a workstation connected to a small branch network using a single switch. The network using a single switch. The network does not have any routers and is not connected to the Internet. What are the minimum configuration parameters required on the workstation to be able to communicate with all hosts on the network?
IP address and subnet mask
Listed below are several DNS record types. Match the record type on the left with its function on the right.
Identify a domain controller- SRV identify a mail server- MX Map a host name to an IPv4 address- A Map an IPv4 address to a host name- PTR
You recently created a new network segment for Development. Because the hosts are now on a different network segment, they can no longer contact DHCP server. Both network segments are connected wia a Cisco router. Which of the following would be the best action to take in order to fix the problem?
Implement an IP Helper address on the router
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 is true about the MAC address? (Select two)
It is a 48-bit address It is typically represented by hexadecimal numbers.
Which of the following statements accurately describes how a modem works? (Select two)
It modulates digital data from the PC into analog data and transmits it on a telephone network. It demodulates analog data from a telephone network into digital PC data.
At which OSI model layer does a media converter operate?
Layer 1
At which of the following OSI layers does a router operate?
Layer 3
You have a server that has a 100BaseFX network interface card that you need to connect to a switch. The switch only has 100BaseTX switch ports. Which device should you use?
Media converter
You have implemented an ad hoc wireless network that doesn't employ a wireless access point. Every wireless network card communicate directly with any other wireless network card on the network. What type of physical network topology has been implemented in this type of network?
Mesh
You want to implement a fault tolerant topology as you connect routers on your wide area network. Which topology meets your needs?
Mesh
Your manager has asked you to implement a network infrastructure that will accommodate failed connections. Which of the network topologies provides redundancy for a failed link?
Mesh
You have a network that uses 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 though the network?
Messages travel from one device to the next until they reach the destination device.
Which of the following geographic network types are typically managed by a city as a public utility?
Metropolitan area network (MAN)
Which of the following functions are performed at the Physical layer of the OSI model?
Moving data across networking cables
You want to measure the voltage, amps, and ohms of various devices. Which tool should you use? Toner probe Multimeter Certifier Voltage event recorder Butt set
Multimeter
At which OSI layer does a router operate to forward network messages?
Network
Which network component connects a device with the transmission media and allows it to send and receive messages?
Network interface card
You have a network connected using a physical bus topology. One of the cables that connects a workstation to the bus breaks. Which of the following best describes what effect this will have on network communications?
No devices will be able to communicate.
You are installing networking wiring for a new Ethernet network at your company's main office building. The project specifications 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 jhas more twists per inch than Category 3
You are building a new network for a small startup financial services company. Security is paramount, so each organization within the company will have their own network segments separated by routers. Funds are limited, and you have been asked to keep costs to a minimum. You have acquired a used fiber optic switch and want to use it to create a fiber optic backbone that interconnects all of the routers. You purchased several used multi-mode GBIC modules on eBay that you will install in each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRJ connectors. You 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 are able to get the LC connectors on the cables to lock into the MTRJ connectors on the GBIC modules and on the switch. Will this implementation work? No. You should use single-mode patch cables to connect a GBIC module to a switch. Yes. All of the requirements for implementing a fiber optic network have been met. No. You should use a specialized backbone fiber optic switch to create a backbone network for routers. No. You should purchase patch cables that use MTRJ connectors.
No. You should purchase patch cables that use MTRJ connectors.
You are building a new network for a small startup financial services company. Security is paramount, so each organization within the company will have its own network segment separated by a router. However, funds are limited, and you have been asked to keep costs to a minimum. You have acquired a used fiber optic switch and want to use it to create a fiber optic backbone that interconnects all of the routers. You purchased several used single-mode GBIC modules on eBay that you will install in each router to allow them to connect to the switch. Both the switch and the GBIC modules use MTRJ connectors. You connect each module to the switch with 1-meter multimode patch cables. Will this implementation work? No. You should not use standard fiber optic switches to create a backbone network for routers. No. You shouldn't use multi-mode patch cables with single-mode GBIC modules. Yes,. All of the requirements for implementing a fiber optic network have been met. No. You should purchase fiber optic equipment that use FC connectors.
No. You shouldn't use multi-mode patch cables with single-mode GBIC modules.
You are 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? Multimeter Toner probe OTDR Smartjack
OTDR
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 topological should you implement?
Partial mesh
You have implemented a network where each device provides all other devices on the network with access to shared files. What type of network do you have?
Peer-to-peer
At which layer of the OSI models do hubs operate?
Physical
What topology is used with 100BaseTX Fast Ethernet networks? (Select two.) Physical star/logical ring Physical star/logical bus Physical star/logical star Physical ring/logical star
Physical star/logical bus Physical star/logical star
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 then one.
Presentation--Application Data Link--Network Access Application--Application Session--Application Network--Internet Transport--Host-to-host
You are creating an Ethernet network for your company. The shipping department is located in a different building that is located 150 meters from the main wiring closet. You connect a single Cat6e cable to connect the wiring closet to the shipping building. Which of the following are you most likely to experience?
Repeater
A user from the Sales department calls to report that he is experiencing problems connecting to the Sales file server. All users in the Sales department connect to the Sales server through a single Ethernet switch. No other users have reported problems connecting to the Sales server. Which of the following troubleshooting actions are you most likely to perform first?
Replace the network card in the user's computer
In which topology does each device on the network act as a repeater sending the signal to the next device?
Ring
Which topology connects each device to a neighboring device?
Ring
Which of the following hardware devices links multiple networks and directs traffic between networks
Router
In the OSI model, what is the primary function of the Network layer?
Routes messages between networks
Which of the following connectors is used with fiber optic cables and requires that you use a twisting motion to connect it? BNC, SC, F-type, ST, LC.
ST.
An eight-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do?
Send the frame out ports 2 through 8
During TCP/IP communications 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. (Not all layers have a matching information format.)
Session Layer--(leave blank) Transport Layer--Segments Network Layer--Packets Data Link Layer--Frames Physical Layer--Bits
You use Cat5e twisted pair cable on your network. Cables are routed through walls and the ceiling. A user puts a screw in the wall to hang a picture and pierces the cable so that a signal sent on pin 1 arrives on the cable connected to pin 7. Which term describes this condition? Open circuit Short circuit Attenuation Crosstalk Split pair
Short Circuit
You would like to implement 10 Gbps Ethernet over a distance of 1 kilometer or greater. Which of the following would be the minimum requirement for the implementation? (Select two.) Single-mode fiber 10GBaseER standards 10GBaseSR standards Multi-mode fiber 10GBaseLR standards
Single-mode fiber 10GBaseLR Standards
Which type of optical fiber is normally used to connect two buildings that are several kilometers apart?
Single-mode.
Users report that the internet is no longer accessible. You suspect that the line connecting your building to the internet is not working properly. Which of the following allows the service provider to remotely test the local loop? Smartjack Demarc extension Demarc Horizontal cross connect Loopback plug
Smartjack
Which topology connects each network device to a central hub?
Star
You have a small network that uses a switch to connect multiple devices. Which physical topology are you using?
Star
You need to connect a workstation to a switch using a regular port on the switch (not an uplink port). The switch does not support auto-MDI. Which type of cable should you use?
Straight-through
Which of the following best describes the purpose of using subnets?
Subnets divide an IP network address into multiple network addresses
You manage a subnet that uses subnet address 198.162.1.0/23 Which of the following best describes how addressing is configured for the subnet?
Supernetting
What device is used to create a physical star topology?
Switch
Which of the following devices operates at the OSI model Layer 2?
Switch
Which of the following devices operate at OSI model layer? (2)
Switch & Network Interface Card
Which of the following devices operate at the Data Link layer of the OSI model? (3)
Switches Bridges NICs
You have been asked to document the wiring in your building. You would like to identify the length of each Cat5 cable to verify that it meets Ethernet standards. You need to identify the length of the cables, but most cables run through walls and ceilings, making them difficult to trace. Which tool should you use? Toner probe TDR Smartjack Butt set OTDR
TDR
If dynamic DNS is being used, which of the following events will cause a dynamic update of the host records?
The DHCP server renews an ip address lease The ipconfig/release command is entered on a workstation.
You have a small network connected to the Internet as shown in the exhibit. You need to configure the default gateway address on Wrk1 so that is can communicate with hosts on the Internet. Which address would you use for the default gateway address?
The IP address assigned to Fa0/0 on router one
After installing a new DHCP server on the network, you need to verify that the network devices are receiving IP addresses via DHCP. You reboot a Windows XP client system and using the ipconfig command, receive the following information: Ethernet adapter Local Area Connection 1: Description: CardBus-II 10/100 PC Card Physical Address : 02-00-4C-3F-50 DHCP Enabled : Yes Auto configuration Enabled : Yes Auto configuration IP Address : 169.254.25.129 Subnet : 255.255.0.0 Default Gateway: DNS Servers: Which of the following statements are true?
The client system is unable to reach the DHCP server. The client system is configured to use DHCP.
A network is connected following the IEEE 802.3 specifications. Which of the following best describes the following best describes when a device can transmit messages?
The device listens to determine if the transmission media is free
You've connected a cable certifier to an RJ45 wall jack, and the output shown below is displayed on the device. What does this output indicate? (Select two.) This is a crossover cable. This is a straight-through cable. There are multiple shorts on this cable. The cable is functioning correctly. There are multiple open pins on this cable.
This is a crossover cable. The cable is functioning correctly.
Which of the following is a good reason to install a firewall?
To prevent hackers from accessing your network
What device sends signals from a computer onto a network?
Transceiver
Which OSI model layer is responsible for guaranteeing reliable message delivery?
Transport
You are troubleshooting a connectivity problem in which one client system is unable to connect to a server. Both the server and client system are connected to the same Ethernet network switch. No other users have complained of a problem, and you suspect that faulty network cabling might be to blame. Which of the following troubleshooting steps are you most likely to perform first? Use a punch down tool to test the network cable between the computer system and the network switch. Use a tone generator to test the network cables between the computer and the network switch and between the network switch and the server system. Use a wire crimper to ensure that the cable ends are still fully attached to the cable in two places: between the computer and the network switch, and between the network switch and the server system. Use a cable tester to test the cable between the network switch and the server system. Use a cable tester to test the cable between the computer system and the network switch.
Use a cable tester to test the cable between the computer system and the network switch
You have configured your organization's DHCP server to dynamically assign IP addresses to DHCP clients using a lease duration of four days. A user's workstation is powered on and receives addressing information from this DHCP server Monday morning at 8 am. When will the client contact the DHCP?
Wednesday morning
How do switches and bridges learn where devices are located on a network?
When a frame enters a port, the source MAC address is copied from the frame header.
When would you typically use an RJ-11 connector?
When connecting a phone to a phone line
You are implementing a DHCP server for your segment. Your segment's IP address is 192.168.1.0. Your default gateway address is 192.168.1.254. Your DNS server address is 192.168.1.1. Your default gateway is configured as a NAT router to translate addresses between network segments. YOu configured the 03 Router option on your DHCP server so it can deliver the IP address of the default gateway to workstations. After configuring your workstations to get their IP address information dynamically, your users complain that they are unable to access web sites on the Internet. How can you resolve this problem?
You must configure your DHCP server with an option that delivers the IP address of the DNS server (Option 06).
In which of the following situations might you use an RJ-11 connector?
You want to connect your computer to the Internet with a dial-up connection
Characteristics of an LC fiber optic connector?
•They are half the size of standard connectors. •They use a housing and latch system similar to an RJ45 UTP connector.
Characteristics of an MTRJ fiber optic connector?
•They can be used with multi-mode fiber optic cables. •They use metal guide pins to ensure accurate alignment.
