1. Which term is used to describe the process of placing one message format into another format so that the message can be delivered across the appropriate medium?
· flow control
· encapsulation
· encoding
· multicasting
· access method
2. Refer to the graphic. Five PCs are connected through a hub. If host H1 wants to reply to a message from host H2, which statement is true?
· H1 sends a unicast message to H2, but the hub forwards it to all devices.
· H1 sends a unicast message to H2, and the hub forwards it directly to H2.
· H1 sends a broadcast message to H2, and the hub forwards it to all devices.
· H1 sends a multicast message to H2, and the hub forwards it directly to H2.
3. Which two statements concerning networking standards are true? (Choose two.)
· adds complexity to networks
· encourages vendors to create proprietary protocols
· provides consistent interconnections across networks
· ensures that communications work best in a single-vendor environment
· simplifies new product development
4. What does the 100 mean when referencing the 100BASE-T Ethernet standard?
· type of cable used
· type of data transmission
· speed of transmission
· type of connector required
· maximum length of cable allowed
5. Which address does an NIC use when deciding whether to accept a frame?
· source IP address
· source MAC address
· destination IP address
· destination MAC address
· source Ethernet address
6. Which type of address is used in an Ethernet frame header?
· logical addresses only
· IP addresses only
· MAC addresses only
· broadcast addresses only
7. What is the function of the FCS field in an Ethernet frame?
· detects transmission errors
· provides timing for transmission
· contains the start of frame delimiter
· indicates which protocol will receive the frame
8. What is the purpose of logical addresses in an IP network?
· They identify a specific NIC on a host device.
· They are used to determine which host device accepts the frame.
· They provide vendor-specific information about the host.
· They are used to determine the network that the host is located on.
· They are used by switches to make forwarding decisions.
9. Which device accepts a message on one port and always forwards the message to all other ports?
· modem
· switch
· router
· hub
10. Which two networking devices are used to connect hosts to the access layer? (Choose two.)
· router
· hub
· switch
· server
· computer
11. Host A needs to learn the MAC address of Host B, which is on the same LAN segment. A message has been sent to all the hosts on the segment asking for the MAC address of Host B. Host B responds with its MAC address and all other hosts disregard the request. What protocol was used in this scenario?
· ARP
· DHCP
· DNS
· WINS
12. switch receives a frame with a destination MAC address that is currently not in the MAC table. What action does the switch perform?
· It drops the frame.
· It sends out an ARP request looking for the MAC address.
· It floods the frame out of all active ports, except the origination port.
· It returns the frame to the sender.
13. What is a benefit of having a router within the distribution layer?
· prevents collisions on a local network
· keeps broadcasts contained within a local network
· controls which hosts have access to the network
· controls host-to-host traffic within a single local network
14. Refer to the graphic. What does the router do after it determines that a data packet from Network 1 should be forwarded to Network 2?
· It sends the data packet as it was received.
· It reassembles the frame with different MAC addresses than the original frame.
· It reassembles the data packet with different IP addresses than the original data packet.
· It reassembles both the packet and the frame with different destination IP and MAC addresses.
15. Which table does a router use to make decisions on where a data packet is to be sent?
· ARP table
· routing table
· network table
· forwarding table
16. If the default gateway is configured incorrectly on the host, what is the impact on communications?
· The host is unable to communicate on the local network.
· The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.
· The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.
· There is no impact on communications.
17. What device is typically used as the default gateway for a computer?
· a server hosted by the ISP
· the router interface closest to the computer
· a server managed by a central IT department
· the switch interface that connects to the computer
18. If a router receives a packet that it does not know how to forward, what type of route must be configured on the router to prevent the router from dropping it?
· dynamic route
· default route
· destination route
· default destination
19. Which two items are included in a network logical map? (Choose two.)
· naming scheme
· IP addressing scheme
· length of cable runs
· physical location of networking devices
· specific layout of interconnections between networking devices and hosts
20. An integrated router can normally perform the functions of which two other network devices? (Choose two.)
· NIC
· switch
· e-mail server
· application server
· wireless access point
21. What is a reason for disabling simple file sharing?
· It enables the user to map a remote resource with a local drive.
· It enables the user to share all files with all users and groups.
· It enables the user to share printers.
· It enables the user to set more specific security access levels.
0 komentar:
Posting Komentar