Sem 2, Week 6

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. Multimode 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.) A) 1000Base-T B) 1000Base-SX C) 10GBase-T D) 10Base-FL E) 10GBase-SR

B) 1000Base-SX E) 10GBase-SR

Your network follows the 100Base-FX specifications for Fast Ethernet and uses half-duplex multimode cable. What is the maximum cable segment length allowed? A) 100 meters B) 412 meters C) 550 meters D) 1,000 meters

B) 412 meters

Listen to exam instructions Which of the following is true about a network-based firewall? A) A network-based firewall are considered software firewalls. B) A network-based firewall is installed at the edge of a private network or network segment. C) A network-based firewall is less expensive and easier to use than host-based firewalls. D) A network-based firewall is installed on a single computer.

B) A network-based firewall is installed at the edge of a private network or network segment.

You have a network that's connected using a physical star topology. One of the drop cables connecting a workstation has been removed. Which of the following BEST describes the effect that this will have on network communications? A) All devices will be able to communicate. B) All devices except the device connected with the drop cable will be able to communicate. C) Devices on one side of the missing cable will be able to communicate with each other, while devices on the other side of the missing cable will not be able to communicate. D) Only devices on one side of the missing cable will be able to communicate with each other, while only devices on the other side of the missing cable will be able to communicate with each other. E) No devices will be able to communicate.

B) All devices except the device connected with the drop cable will be able to communicate.

Which of the following physical topologies are used with Ethernet networks? (Select two.) A) Ring B) Bus C) Token D) Mesh E) Star

B) Bus E) Star

You want to connect 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? A) Loopback B) Crossover C) Straight-through D) Rollover

B) Crossover

You have been given a laptop to use for work. You connect the laptop to your company network, use the laptop from home, and use it while traveling. You want to protect the laptop from internet-based attacks. Which solution should you use? A) VPN concentrator B) Host-based firewall C) Proxy server D) Network-based firewall

B) Host-based firewall

Which of the following connectors is typically used for the ends of a rollover cable? A) RJ11 B) RJ45 C) F-type D) Serial E) BNC

B) RJ45 D) Serial

Which of the following connections would you use a straight-through cable for? A) Hub to hub B) Router to a regular port on a switch C) Router to the uplink port on a hub D) Workstation to workstation

B) Router to a regular port on a switch

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? A) Crossover B) Straight-through C) Rollover D) Loopback

B) Straight-through

Angela is the network administrator for a rapidly growing company with a 100BaseT network. Users have recently complained about slow file transfers. While checking network traffic, Angela discovers a high number of collisions. Which connectivity device would BEST reduce the number of collisions and allow future growth? A) Router B) Switch C) Hub D) Bridge

B) Switch

Which device combines multiple security features, such as anti-spam, load-balancing, and antivirus, into a single network appliance? A) Circuit-level gateway B) Unified Threat Management (UTM) C) Packet-filtering firewall D) Next Generation Firewall (NGFW)

B) Unified Threat Management (UTM)

Listen to exam instructions Which of the following is true about a firewall? A) Implicit deny is used to deny permissions to a specific user even when the rest of the user's group is allowed access. B) You must manually specify which traffic you want to allow through the firewall. Everything else is blocked. C) Host-based firewalls and network-based firewalls can be installed separately, but they cannot be placed together to provide multiple layers of protection. D) Firewalls protect against email spoofing attacks.

B) You must manually specify which traffic you want to allow through the firewall. Everything else is blocked.

Listen to exam instructions Which Gigabit Ethernet standard uses multimode fiber optic cabling and supports network segments up to a maximum of 550 meters long? A) 1000Base-ZX B) 1000Base-CX C) 1000Base-T D) 1000Base-SX

D) 1000Base-SX

How does a proxy server differ from a packet-filtering firewall? A) A proxy server is used to create a screened subnet, while a packet-filtering firewall can only be used with screened subnets. B) A proxy server includes filters for the session ID as well as the IP address and port number. C) A proxy server can prevent unknown network attacks, while a packet-filtering firewall can only prevent known attacks. D) A proxy server operates at the Application layer, while a packet-filtering firewall operates at the Network layer.

D) A proxy server operates at the Application layer, while a packet-filtering firewall operates at the Network layer.

You are implementing a SOHO network for a local business. The ISP has already installed and connected a cable modem for 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 within the following parameters: You must spend as little money as possible. You must not purchase unnecessary equipment. Computers need to have a gigabit connection to the network. New devices should not require management or configuration. You examine each computer and notice that only one of the four computers has a wireless NIC. They all have Ethernet NICs. What should you purchase? A) A wireless AP and three new wireless NICs. B) A new cable modem with a built-in switch and CAT 6a cabling. C) A hub and CAT 5e cabling. D) An unmanaged switch and CAT 5e cabling. E) A managed switch and CAT 6 cabling.

D) An unmanaged switch and CAT 5e cabling.

Which of the following does the sudo iptables -F command accomplish? A) Drops all incoming traffic. B) Lists all the current rules. C) Saves changes to iptables. D) Clears all the current rules.

D) Clears all the current rules.

You want to create a loopback plug using a single RJ45 connector. How should you connect the wires in the connector? A) Connect pin 1 to pin 5 and pin 2 to pin 6. B) Connect pin 1 to pin 3 and pin 2 to pin 4. C) Connect pin 1 to pin 8 and pin 2 to pin 7. D) Connect pin 1 to pin 3 and pin 2 to pin 6. E) Connect pin 1 to pin 2 and pin 3 to pin 3.

D) Connect pin 1 to pin 3 and pin 2 to pin 6.

You need to connect two switches using their uplink ports. The switches do not support auto-MDI. Which type of cable should you use? A) Loopback B) Straight-through C) Rollover D) Crossover

D) Crossover

You need to transfer data from one laptop to another, and you would like to use an Ethernet cable. You do not have a hub or a switch. Which type of cable should you use? A) Loopback B) Rollover C) Straight-through D) Crossover

D) Crossover

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? A) Incorrect LAN protocol B) Incorrect routing table C) Failed switch D) Failed patch cable E) Faulty IP stack

D) Failed patch cable

You are moving a client to a new location within an Ethernet network. Previous to the move, the client system did not have difficulty accessing the network. During the relocation, you attach patch cables 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 good one, but you still cannot connect. Which of the following might you suspect is the problem? A) Faulty termination B) Incorrect duplex settings C) Server software configuration error D) Failed patch cable between the client system and the wall jack E) Failed network card F) Failed switch

D) Failed patch cable between the client system and the wall jack

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 collisions? A) Incorrect duplex settings B) Faulty switch C) Adapter controller card failure D) Faulty network card

D) Faulty network card

You have a network that's connected using a physical bus topology. One of the cables that connects a workstation to the bus breaks. Which of the following BEST describes the effect that this will have on network communications? A) All devices will be able to communicate. B) All devices except the device connected with the drop cable will be able to communicate. C) Only devices on one side of the break will be able to communicate with each other, while only devices on the other side of the break will be able to communicate with each other. D) No devices will be able to communicate. E) Devices on one side of the break will be able to communicate with each other, while devices on the other side will not be able to communicate.

D) No devices will be able to communicate.

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 this 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? A) Reinstall the network card drivers on the sales server. B) Replace the Ethernet switch in the sales department. C) Replace the network card in the sales server. D) Replace the network card in the user's computer.

D) Replace the network card in the user's computer.

Listen to exam instructions Based on the diagram, which type of proxy server is handling the client's request? A) Open proxy server B) Circuit-level proxy server C) Forward proxy server D) Reverse proxy server

D) Reverse proxy server

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? A) Straight-through B) RG6 C) Crossover D) Rollover

D) Rollover

During a network infrastructure upgrade, you replaced two 10 Mbps hubs with switches and upgraded from a Category 3 UTP cable to a 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 your network? A) All network nodes connected to the switch will be unavailable. B) All network nodes on the same subnet as the printer will be unavailable. C) All network nodes, including the printer, will be available. D) All network nodes authenticated by the same server as the printer will be unavailable. E) All network nodes except the printer will be available.

E) All network nodes except the printer will be available.

Which Gigabit Ethernet standard can support long network segments up to a maximum of 5 km when used with single-mode fiber optic cable? A) 1000BaseLX B) 1000BaseCX C) 1000BaseT D) 1000BaseSX

A) 1000BaseLX

Listen to exam instructions 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 this implementation? (Select two.) A) 10GBaseLR standards B) Single-mode fiber C) 10GBaseER standards D) Multimode fiber E) 10GBaseSR standards

A) 10GBaseLR standards B) Single-mode fiber

You want to create a rollover cable that has an RJ45 connector on both ends. How should you connect the wires within the connectors? A) Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5. B) Connect each pin on one end to the same pin on the other end (pin 1 to pin 1, pin 2 to pin 2, etc.). C) Use the T568A standard on one end and the T568B standard on the other end. D) Connect pin 1 to pin 3 and pin 2 to pin 6.

A) Connect pin 1 to pin 8, pin 2 to pin 7, pin 3 to pin 6, and pin 4 to pin 5.

You have a network that's connected using a full physical mesh topology. The link between Device A and Device B is broken. Which of the following BEST describes the effect that this will have on network communications? A) Device A will be able to communicate with all other devices. B) Device A will not be able to communicate with any other device. C) No devices will be able to communicate with any other device. D) Device A will be able to communicate with any device except for Device B.

A) Device A will be able to communicate with all other devices.

Which type of cabling do Ethernet 100BaseFX networks use? A) Fiber optic B) Shielded twisted pair C) Unshielded twisted pair D) Coaxial

A) Fiber optic

Which of the following are true about reverse proxy? (Select two.) A) Handles requests from the internet to a server on a private network. B) Sits between a client computer and the internet. C) Can perform load balancing, authentication, and caching. D) Handles requests from inside a private network out to the internet. E) Clients always know they are using reverse proxy.

A) Handles requests from the internet to a server on a private network C) Can perform load balancing, authentication, and caching.

Which options are you able to set on a firewall? (Select three.) A) Packet source address B) Packet destination address C) Sequence number D) Acknowledgement number E) Port number F) Checksum G) Digital signature

A) Packet source address B) Packet destination address E) Port number

Which of the following standards does a rollover cable typically use? A) RS232 B) RG6 C) RG58 D) RJ11

A) RS232

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.) A) Single-mode fiber B) 1000BaseSX C) Mutimode fiber D) 1000BaseCX E) 1000BaseLX

A) Single-mode fiber E) 1000BaseLX

Which of the following is true about half-duplex mode? A) It requires switches with dedicated switch ports. B) The device can send and receive at the same time. C) Collision detection is turned on. D) Collision detection is turned off.

C) Collision detection is turned on.

Which of the following chains is used for incoming connections that aren't delivered locally? A) Output B) Reject C) Forward D) Drop

C) Forward

Your network follows the 100Base-TX specifications for Fast Ethernet. What is the maximum cable segment length allowed? A) 1,000 meters B) 100 meters C) 2,000 meters D) 500 meters

B) 100 meters