• the Layer 3 protocol selected
• the geographic scope of the network• the PDU defined by the transport layer
• the physical layer implementation• he number of hosts to be interconnected
2. Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for www.server?
• less overhead• one station transmits at a time
• collisions exist• devices must wait their turn
• token passing
• The logical topology is always the same as the physical topology.
• Physical topologies are concerned with how a network transfers frames.
• Physical signal paths are defined by Data Link layer protocols.
• Logical topologies consist of virtual connections between nodes.
5. What is true regarding media access control? (Choose three.)
• Ethernet utilizes CSMA/CD
defined as placement of data frames on the mediacontention-based access is also known as deterministic
802.11 utilizes CSMA/CD
• Data Link layer protocols define the rules for access to different mediacontrolled access contains data collisions
• Network usage is on a first come, first serve basis.
• Computers are allowed to transmit data only when they possess a token.
• Data from a host is received by all other hosts.
• Electronic tokens are passed sequentially to each other.• Token passing networks have problems with high collision rates.
• logical topology
• physical topology• cable path
• wiring grid
• access topology
is used as a pad for data
identifies the source address
identifies the destination address
marks the end of timing information
• is used for timing synchronization with alternating patterns of ones and zeros
• Layer 2 may identify devices by a physical address burned into the network card
• Layer 2 identifies the applications that are communicating
• Layer 3 represents a hierarchical addressing scheme• Layer 4 directs communication to the proper destination network
• Layer 4 addresses are used by intermediary devices to forward data
• All three networks use CSMA/CA
• None of the networks require media access control.
• Network 1 uses CSMA/CD and Network 3 uses CSMA/CA.• Network 1 uses CSMA/CA and Network 2 uses CSMA/CD.
• Network 2 uses CSMA/CA and Network 3 uses CSMA/CD.
• source MAC - PC
• source MAC - S0/0 on RouterA
• source MAC - Fa0/1 on RouterB
• source IP - PC
• source IP - S0/0 on RouterA
• source IP - Fa0/1 of RouterB
The Layer 2 address must be reassigned.
• The default gateway address should not be changed.
• The device will still operate at the same Layer 2 address.• Applications and services will need additional port numbers assigned.
• The Layer 3 address must be reassigned to allow communications to the new network.
• provides the formatting of data
• provides end-to-end delivery of data between hosts
• provides delivery of data between two applications
• provides for the exchange data over a common local media
16. What is a characteristic of a logical point-to-point topology?
The nodes are physically connected.
The physical arrangement of the nodes is restricted.
• The media access control protocol can be very simple.The data link layer protocol used over the link requires a large frame header.
• provide routes across the internetwork
• format the data for presentation to the user
• facilitate the entry and exit of data on media• identify the services to which transported data is associated
• define the logical topology
• provide media access control
• support frame error detection• carry routing information for the frame
• They are 48 binary bits in length.
• They are considered physical addresses.
• They are generally represented in hexadecimal format.• They consist of four eight-bit octets of binary numbers.
• They are used to determine the data path through the network.
• They must be changed when an Ethernet device is added or moved within the network.