Assessment System 1. What are two facts about how ARP resolves an IP address to a MAC address? (Choose two.)
Take Assessment – Module 9 Exam - CCNA 1 Networking Basics (Version 3.1)
• The originating host dynamically issues an arp –a command to obtain the destination MAC address.
• The originating host broadcasts an ARP request packet and each host in a local network receives this packet.
• The originating host dynamically issues an icmp echo request command to obtain the destination MAC address.
• The host with the specified destination IP address sends an ARP reply packet containing its MAC address back to the originating host.
• The host with the specified destination IP address sends an icmp echo reply packet to the originating host with its MAC address.
2. Which TCP/IP model layer supports both LAN and WAN technologies?
• network access layer
• internet layer
• transport layer
• application layer
3. What is the primary responsibility of the transport layer?
• allows access to the network media
• provides data representation and encoding
• selects paths through the network for data to travel
• defines end-to-end connectivity between host applications
4. What is the network broadcast address for a Class C address of 192.168.32.0 with the default subnet mask?
• 192.168.0.0
• 192.168.0.255
• 192.168.32.0
• 192.168.32.254
• 192.168.32.255
5. Which two statements correctly describe the IP address 127.0.0.1? (Choose two.)
• It belongs to the Class A range of addresses.
• It belongs to the Class B range of addresses.
• It belongs to the Class C range of addresses.
• It is reserved for loopback testing.
• It is reserved for multicast group testing.
• It is reserved for unicast testing.
6.
• 12.0.0.0
• 172.0.0.0
• 172.168.0.0
• 192.32.17.0
• 192.168.67.0
• 225.1.5.0
7. Why is IP considered a best-effort protocol?
• IP detects lost packets.
• IP validates the content of the packets.
• IP does not provide acknowledgment of the data delivery.
• IP reorders the packet as they arrive at the destination host.
8. Which three addresses are considered to be private addresses? (Choose three.)
• 10.45.09.23
• 15.87.234.87
• 172.32.45.90
• 172.17.78.98
• 192.169.89.56
• 192.168.45.23
9. 
• An ARP request must be used to obtain an address that is placed in the ARP table.
• Frames from other hosts in the network to this host will use a destination address of 00-06-25-25-6e-5d.
• The only remote locations that can be reached from this host are 192.168.1.97 and 192.168.1.254.
• If a packet is sent to a network device other than 192.168.1.97 and 192.168.1.254, an ARP request must be used.
• If the computer with the IP address of 192.168.1.94 sends a packet to the device with the IP address 192.168.1.97, no ARP request is required.
10. 
• PC1 and PC2
• all servers
• only PC2 Laptop
• all hosts and all servers
11. Why were private IP addresses developed?
• to permit dynamic assignment of IP addresses
• to permit the duplication of public IP addresses
• to minimize the utilization of reserved IP addresses
• to permit public IP addresses to be used in private networks
• to address the issue of not enough available public IP addresses
12. Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?
• 255.255.0.0
• 255.255.255.0
• 255.255.254.0
• 255.255.248.0
13. When a host has an empty ARP cache, what is the next step the host will take to find the destination MAC address of a remote host?
• sends an ARP request as a unicast to the server
• sends an ARP request as a unicast to the destination
• sends an ARP request as a broadcast to all hosts in the local network
• sends an ARP request as a unicast to the default gateway
14.
• to configure the computer to use ARP
• to configure the computer to use DHCP
• to configure the computer to use a routing protocol
• to configure the computer with a statically assigned IP address
15. How many usable hosts are available given a Class C IP address with the default subnet mask?
• 254
• 255
• 256
• 510
• 511
• 512
16. Which statement accurately describes public IP addresses?
• Public addresses cannot be used within a private network.
• Public IP addresses must be unique across the entire Internet.
• Public addresses can be duplicated only within a local network.
• Public IP addresses are only required to be unique within the local network.
• Network administrators are free to select any public addresses to use for network devices that access the Internet.
17. Which IPv4 class of addresses provides the most networks?
• Class A
• Class B
• Class C
• Class D
• Class E
18. Which IPv4 class provides the highest number of host addresses per network?
• Class A
• Class B
• Class C
• Class D
• Class E
19. What is the purpose of a DHCP server on a network?
• to resolve MAC addresses to IP addresses
• to resolve IP addresses to MAC addresses
• to resolve host names to IP addresses
• to assign IP addresses dynamically to hosts
• to assign a MAC address to a host
20. 
• The LAN segment is subnetted to allow 254 subnets.
• The DNS server for this host is on the same subnet as the host.
• The host automatically obtained the IP addresses 192.168.1.100.
• The host received the IP address from the router on the local LAN segment.
• The host is assigned an address of 00-50-8D-F1-EA-8D by the administrator.
Sabtu, 05 April 2008
CCNA 1 - Module 9 Exam Answer
CCNA 1 - Module 8 Exam Answer
Assessment System
Take Assessment – Module 8 Exam - CCNA 1 Networking Basics (Version 3.1)
1. What is characteristic of the operation of a Layer 2 switch?
• forwards data based on logical addressing
• duplicates the electrical signal of each frame to every port
• learns the port assigned to a host by examining the destination MAC address
• uses the destination MAC address to determine the specific interface to forward a frame
2. Two newly hired technicians are discussing the implementation of a new LAN. One technician proposes installing a hub. The other technician advises installing a switch. Which statements are true about the differences between a hub and a switch? (Choose two.)
• A hub operates at Layer 2 of the OSI model.
• A hub reduces the number of collisions on a LAN.
• A hub works at a higher OSI model layer than a switch.
• A switch provides more throughput to hosts on a LAN
• A switch provides a collision-free environment on a LAN.
• The number of collisions on a LAN are the same whether a hub or a switch is used.
3.
Refer to the exhibit. Forty-eight workstations are connected to a hub. The users are able to connect to the network, but access is very slow. An entry-level technician replaces the 10 Mbps hub with 100 Mbps hub but the problem still exists. What is the most economical way to correct the problem?
• Replace the hub with a switch.
• Replace the hub with a router.
• Replace the hub with a 1 Gbps hub.
• Replace the hub with a 10 Mbps fiber hub.
4.
Exhibited is a portion of ABC Company internetwork. Which of the connections can be full duplex?
• segments 1 and 2
• segment 2
• segments 3 and 4
• segments 2, 3, and 4
• segments 1, 2, 3, and 4
5.
Refer to the exhibit. The switch and the hub have default configurations, and the switch has built its CAM table. Which of the hosts will receive the data when workstation A sends a unicast packet to workstation C?
• workstation C
• workstations B and C
• workstations B, C, and the E0 interface of the router
• workstations B, C, D, E, F, and the E0 interface of the router
6. An administrator would like to connect ten workstations on a 192.168.0.0/24 network. The device selected by the administrator must allow connectivity between hosts without sharing bandwidth. Which device would be appropriate?
• hub
• router
• switch
• repeater
7. Which networking devices use the MAC address to make forwarding decisions? (Choose two.)
• NIC
• bridge
• hub
• switch
• repeater
8. Which devices are primarily used to extend cable segments within a collision domain by regenerating the data signals? (Choose two.)
switch
• repeater
• router
• bridge
• hub
9. Which devices will create multiple collision domains in an Ethernet network? (Choose two.)
• NIC
• hub
• switch
• router
10.
Refer to the exhibit. How many broadcast domains exist in classroom 240?
• 1
• 2
• 5
• 12
• 13
• 15
11. A PC receives a frame. Which situation will cause the NIC on the receiving host to pass the frame contents up the OSI layers to be processed by the PC?
• The frame is a runt frame.
• The destination MAC address of the frame is FFFF.FFFF.FFFF.
• The transmitting host generated a jam signal during the frame transmission.
• The recalculated checksum for the frame does not match the FCS on the frame.
12. A network administrator has a multi-floor LAN to monitor and maintain. Through careful monitoring, the administrator has noticed a large amount of broadcast traffic slowing the network. Which device would you use to best solve this problem?
• bridge
• hub
• router
• transceiver
13. What will a bridge do if it receives a frame with a MAC address that is not within the table?
• discard frame
• ignore frame
• send frame to appropriate port
• send frame to all ports except source port
14. Which networking device reduces the size of both collision domains and broadcast domains?
• hub
• Layer 2 switch
• router
• bridge
• repeater
15. What is used to prevent Layer 2 switching loops?
• bridging
• segmentation
• Address Resolution Protocol
• Spanning-Tree Protocol
CCNA 1 - Module 7 Exam Answer
Assessment System
Take Assessment – Module 7 Exam - CCNA 1 Networking Basics (Version 3.1)
1. Which Ethernet standard does the IEEE 802.3 standard recommend for backbone installations?
• 10BASE-T
• 100BASE-T
• 100BASE-FX
• 1000BASE-LX
2. Which statements describe Gigabit Ethernet technology? (Choose two.)
• operates at 100 Mbps
• typically used for backbone cabling
• requires shielded twisted-pair cabling
• can be implemented over copper and fiber
• primarily used between workstations option
3. Which of the following are Fast Ethernet technologies? (Choose two.)
• 100BASE-5
• 100BASE2
• 1000BASE-F
• 100BASE-FX
• 100BASE-TX
4. To make sure timing limitations are not violated when implementing a 10 Mbps Ethernet network involving hubs or repeaters, a technician should adhere to which rule?
• the 4-5-3 rule
• the 6-4-2 rule
• the 3-4-5 rule
• the 5-4-3 rule
5. At which OSI layer do the differences between standard Ethernet, Fast Ethernet and Gigabit Ethernet occur?
• physical layer
• data link layer
• network layer
• transport layer
6. How does 1000BASE-T use the UTP wire pairs to accomplish transmission?
• two pairs are used to transmit and two pairs are used to receive
• one pair is used to transmit, one pair is used to receive, one pair is used for clocking, and one pair is used for error correction
• all four pairs are used in parallel by both hosts to transmit and receive simultaneously
• two pairs of wires are used as in 10BASE-T and 100BASE-TX
7. What RJ-45 pins are unused when transmitting and receiving data in an Ethernet 100BASE-T Category 5 UTP cable? (Choose two.)
• 1 and 2
• 3 and 6
• 4 and 5
• 7 and 8
8. What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?
• 100 meters
• 185 meters
• 300 meters
• 500 meters
9. Which media types can be used in an implementation of a 10BASE-T network? (Choose three.)
• Category 5 UTP
• Category 5e UTP
• Category 3 UTP
• coaxial cable
• multi-mode fiber
• single mode fiber
10. Which of the following Ethernet technologies are considered legacy Ethernet? (Choose three.)
• 10BASE2
• 10BASE5
• 10BASE-T
• 100BASE-T
• 100BASE-FX
• 100BASE-TX
LINK Answer Asessment JENI 1
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- Modul 1 Dasar-Dasar Pemprograman
- Struktur Control
- Java Array
- Java Class
- Pewarisan dan Polimorphism
- Exeption dan Assortion
- Tour Package Java Lang
- Thread
- Java GUI
- IO Lanjut Jaringan
- Final Exam
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Kamis, 14 Februari 2008
CCNA 1 - Module 6 Exam Answer
Assessment System
Take Assessment – Module 6 Exam - CCNA 1 Networking Basics (Version 3.1)
1.
Refer to the exhibit. Host A is communicating with host F. What happens to a frame sent from host A to host F as it travels over the Ethernet segments?
• The frame format is modified as it passes through each switch.
• The frame format remains the same across each Ethernet segment.*
• The frame format is modified as the media speed changed at switch B and switch E.
• The frame format is modified as the media material changes between copper and fiber at switch C and switch D.
2. How many hexadecimal digits are in a MAC address?
• 2
• 8
• 12*
•16
• 32
3. What are three functions of a NIC in a PC? (Choose three.)
• A NIC connects the PC to the network media.*
• A NIC detects collisions on the Ethernet segment. *
• A NIC checks the formatting of data before it is transmitted.
• A NIC passes the contents of selected frames to the upper OSI layers*.
• A NIC acknowledges and retransmits data that was not received properly.
• A NIC discards frames when the destination IP address does not match the local host.
4. At what layer of the OSI model does a MAC address reside?
• 1
• 2*
• 3
• 4
• 7
5. A router has an Ethernet, Token Ring, serial, and ISDN interface. Which interfaces will have a MAC address?
• serial and ISDN interfaces
• Ethernet and Token Ring interfaces*
• Ethernet and ISDN interfaces
• Token Ring and serial interfaces
6. In an Ethernet LAN, how does the NIC know when it can transmit data?
• An Ethernet NIC transmits data as soon as the frame is received.
• An Ethernet NIC transmits data as soon as the NIC receives a token.
• An Ethernet NIC transmits data when it senses a collision.
• An Ethernet NIC transmits data after listening for the absence of a signal on the media*.
7. Which characteristics describe carrier sense multiple access collision detect (CSMA/CD)? (Choose three.)
• reliable
• point-to-point
• nondeterministic *
• connection-oriented
• collision environment*
• first-come, first-served approach*
8. Which two devices can provide full-duplex Ethernet connections? (Choose two.)
• hub
• modem
• repeater
• NIC*
• Layer 2 switch*
9. On a local area network, one workstation can send data on the line while it is receiving data. What type of data transfer does this describe?
• hybrid
• half duplex
• full duplex*
• multilink
10.
Refer to the exhibit. The small office network shown in the exhibit consists of four computers connected through a hub. Which configuration would cause collisions and errors on the network?
• autonegotiation
• FastEthernet
• peer-to-peer shared resources
• administratively configured full duplex*
11.
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
• No collisions will occur on this link*.
• Only one of the devices can transmit at a time.
• The switch will have priority for transmitting data.
• The devices will default back to half duplex if excessive collisions occur.
12.
Refer to the exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at the same time. How do the hosts respond on the network? (Choose two.)
• Hosts 1 and 4 may be operating full duplex so no collision will exist.
• The hub will block the port connected to Host 4 to prevent a collision.
• After the end of the jam signal, Hosts 1, 2, 3, and 4 invoke a backoff algorithm.*
• Hosts 1 and 4 are assigned shorter backoff values to provide them priority to access the media.
• If a host has data to transmit after the backoff period of that host, the host checks to determine if the line is idle, before transmitting.*
13. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
• The hosts return to a listen-before-transmit mode.*
• The hosts creating the collision have priority to send data.
• The hosts creating the collision retransmit the last 16 frames.
• The hosts extend their delay period to allow for rapid transmission.
14. Which statement describes how CSMA/CD on an Ethernet segment manages the retransmission of frames after a collision occurs?
• The first device to detect the collision has the priority for retransmission.
• The device with the lowest MAC address determines the retransmission priority.
• The devices on the network segment hold an election for priority to retransmit data
• The devices transmitting when the collision occurs DO NOT have priority for retransmission.*
15.
Refer to the exhibit. A technician wants to increase the available bandwidth for the workstation by allowing the switch and the NIC on the workstation to transmit and receive simultaneously. What will permit this?
• CSMA/CD
• full-duplex*
• FastEthernet
• crossover cable
16. Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?
• A random delay is used to ensure a collision-free link.
• A random delay value for each device is assigned by the manufacturer.
• A standard delay value could not be agreed upon among networking device vendors.
• A random delay helps prevent the stations from experiencing another collision during the transmission.*
17. In which two layers of the OSI model does Ethernet function? (Choose two.)
• application
• session
• transport
• network
• data link*
• physical*
18. Which of the following are specified by IEEE standards as sublayers of the OSI data link layer? (Choose two.)
• Logical Link Control*
• Logical Layer Control
• Media Access Control*
• Logical Link Communication
• Media Access Communication
• Physical Access Communication
19. Where does the MAC address originate?
• DHCP server database
• configured by the administrator
• burned into ROM on the NIC card*
• network configuration on the computer
• included in the creation of the processor chip
