Netw Ch 5+6

"18. What type of switching is used on current L2 switches to allow QoS? A. Store-and-forward B. Cut-through C. Fragment-free D. Fast-forward "

"A. Store-and-forward C. Fragment-free "

"7. What is the minimum and maximum Ethernet frame size as defined by IEEE 802.3? A. 64 bytes - 1518 bytes B. 64 bytes - 1522 bytes C. 32 bytes - 1518 bytes D. 32 bytes - 1522 bytes "

A. 64 bytes - 1518 bytes

"9. Which address is used as a destination address on a broadcast Ethernet frame? A. 0.0.0.0 B. 255.255.255.255 C. FF-FF-FF-FF-FF-FF D. 0C-FA-94-24-EF-00 "

C. FF-FF-FF-FF-FF-FF

"3. What is the name given to the Ethernet MAC sublayer PDU? A. Segment B. Packet C. Frame D. Bit "

C. Frame

"15. Fill in the blanks. ARP _____ are sent to a broadcast MAC address, and ARP replies are sent to a _____ MAC address. "

requests, unicast

"9. The ip default-gateway command was not used when configuring a switch. How will this affect network communication? (Choose two.) A. Host communication through the switch will not be affected. B. The hosts communicating through the switch will not be able to communicate with devices by name. C. The host communication through the switch will be limited to hosts in the local network. D. No communication through the switch will be successful. E. Communication to and from the switch will be limited to hosts in the local network. "

"A. Host communication through the switch will not be affected. E. Communication to and from the switch will be limited to hosts in the local network. "

"11. What functions are provided by the ARP process? (Choose two.) A. Resolving IPv4 addresses to MAC addresses B. Resolving host names to MAC addresses C. Maintaining a table of mappings D. Resolving host names to IP addresses E. Maintaining a table of active IP addresses "

"A. Resolving IPv4 addresses to MAC addresses C. Maintaining a table of mappings"

"19. If the source and destination IPv4 addresses are on the same network, the destination MAC address will be that of which device? A. The same device as the destination IPv4 address B. The default gateway C. The Ethernet switch "

"A. The same device as the destination IPv4 address "

"4. What are the primary functions associated with data encapsulation at the Ethernet MAC sublayer? (Choose three.) A. Media recovery B. Frame delimiting C. Addressing D. Frame placement on the media E. Error detection "

"B. Frame delimiting C. Addressing E. Error detection"

"6. What is true about the Ethernet MAC address? (Choose three.) A. A MAC address is 32 bits in length. B. The first 6 hexadecimal digits of a MAC address represent the OUI. C. The IEEE is responsible for assigning vendors a unique 6-byte code. D. The vendor is responsible for assigning the last 24 bits of the MAC address. E. The MAC address is also known as a burned-in address. "

"B. The first 6 hexadecimal digits of a MAC address represent the OUI. D. The vendor is responsible for assigning the last 24 bits of the MAC address. E. The MAC address is also known as a burned-in address."

"5. When configuring a host, the gateway was not configured. How will this affect communication to and from this device? A. Host communication will not be affected. B. The host will not be able to communicate with devices by name. C. Communication will be limited to hosts in the local network. D. No communication will be successful to or from the host. "

"C. Communication will be limited to hosts in the local network. "

"10. When using the netstat -r command on a host, you see a route 0.0.0.0 0.0.0.0. What does this route represent? A. The host has no routes available for forwarding packets. B. This is a route for testing local communication. C. Destinations without a specified route are forwarded to the gateway. D. The host does not have an IP address configured. "

"C. Destinations without a specified route are forwarded to the gateway. "

"17. Fill in the blanks. The MAC address table is sometimes referred to as a _____ table because it is stored in _____ memory. "

"CAM, content addressable "

"8. Which field in an Ethernet frame is used for error detection? A. Preamble B. Type C. Destination MAC Address D. Frame Check Sequence "

"D. Frame Check Sequence "

"6. In what part of a router is the running configuration being used located? A. ROM B. NVRAM C. Flash D. RAM "

"D. RAM "

"1. At which layers of the OSI model does Ethernet function? (Choose two.) A. Application B. Presentation C. Session D. Transport E. Network F. Data link G. Physical "

"F. Data link G. Physical "

"3. Why was IPv4 designed as a connectionless protocol? "

"IP is connectionless, which greatly reduces the overhead of IP. Therefore, there is no initial exchange of control information before packets are forwarded, and no additional fields exist in the header to maintain an established connection. "

"16. Fill in the blanks. When a switch receives a broadcast frame, it enters the source information in its _____ and then it _____ the frame to all ports except the one the frame was _____ on. "

"MAC address table, floods, received "

"14. Fill in the blanks. When a device receives an ARP request for a device with a different IP address, it will use the _____ information to update its ARP table and then it will _____ the packet. "

"source, drop "

"2. Which of the following is associated with the network layer? A. IP address B. Frames C. MAC address D. Physical addressing "

A. IP address

"1. Which layer of the OSI model is concerned with end-to-end communication over the network? A. Network B. Transport C. Data link D. Application "

A. Network

"8. What are the required steps for configuring an interface on a router? (Choose two.) A. Provide Layer 3 addressing information B. Add a description to the interface C. Turn on routing on the interface D. Activate the interface "

A. Provide Layer 3 addressing information

"13. Fill in the blanks. When ARP receives a request to map an IPv4 address to a MAC address, it first looks in its _____. If no entry is found, ARP will send out an ARP_____. "

ARP TABLE , REQUEST

"10. Which address is a multicast MAC address? A. 0-07-E9-00-00-D4 B. 01-00-5E-00-00-C8 C. FF-FF-FF-FF-FF-FF D. FF-FF-FF-01-00-5E "

B. 01-00-5E-00-00-C8

"12. Which devices on a network will receive an ARP request? A. Only the device that has the IPv4 address that the request is looking for B. All devices in the L2 broadcast domain C. Only devices in the same collision domain "

B. All devices in the L2 broadcast domain

"5. What happens when a data collision occurs on an Ethernet bus? A. The CRC value is used to repair the data frames. B. All devices stop transmitting and try again later. C. The device with the lower MAC address stops transmitting to give the device with the higher MAC address priority. D. The MAC sublayer prioritizes the frame with the lower MAC address. "

B. All devices stop transmitting and try again later.

"2. Which standard specifies the Ethernet MAC sublayer functionality in a computer NIC? A. IEEE 802.2 B. IEEE 802.3 C. IEEE 802.6 D. IEEE 802.11 E. IEEE 802.15 "

B. IEEE 802.3

"7. During the boot process of a Cisco router, you notice a series of hash symbols (#) appearing on the terminal emulator screen from the console session. In what phase is the boot process? A. Loading the startup configuration B. Loading the IOS C. POST D. Loading the bootstrap "

B. Loading the IOS

"20. If the source and destination IPv4 addresses are on different networks, the destination MAC address will be that of which device? A. The same device as the destination IPv4 address B. The default gateway C. The Ethernet switch "

B. The default gateway

"4. On a router, what field in an IPv4 header should be examined to determine that the maximum number of hops has been reached by the packet on its way from the source to this destination? A. Version B. DS C. TTL D. Protocol E. Source IPv4 Address F. Destination IPv4 Address "

C. TTL