Exploring the TCP/IP Link Layer Flashcards
Which two connections were traditionally made using crossover cables? (Choose two.)
A. switch-to-server
B. switch-to-PC
C. switch-to-switch
D. router-to-router
E. router-to-switch
C. switch-to-switch
D. router-to-router
What is the name of the container into which the data payload is placed for transmission on an Ethernet network?
A. frame
B. packet
C. PDU
D. data
A. frame
What is a characteristic of multicast communication?
A. Information is sent to a specific group of devices.
B. Information is sent to all connected devices.
C. Information is sent to one specific device.
D. Information is always sent to two specific devices.
A. Information is sent to a specific group of devices.
How many hexadecimal numbers represent each MAC address?
A. 8
B. 6
C. 12
D. 20
C. 12
Where is the MAC table stored in a Cisco switch?
A. content-addressable memory (CAM)
B. network interface card (NIC)
C. random access memory (RAM)
D. read-only memory (ROM)
A. content-addressable memory (CAM)
What will the switch do if it determines that the destination MAC address of a received unicast frame resides on the same switch port as the source?
A. drop the frame and will not forward
B. forward the frame
C. determine which port a frame must be sent out to reach its destination
D. transmit the frame out all ports.
A. drop the frame and will not forward
The correct answer is “drop the frame and will not forward.” The switch will drop the frame, because it does not need to be forwarded. This behavior is also known as filtering. All other options are not correct.
Identify the missing step in the description of the standard switching process.
1. The switch receives a broadcast frame. 2. [Identify the step] 3. The switch floods the frame out all ports. 4. The destination devices reply to the broadcast.
A. The switch enters the destination MAC address and switch port into its MAC table.
B. The switch does not learn the MAC address.
C. The switch enters the source MAC address and switch port into its MAC table.
D. The switch enters only the source MAC address into its MAC table.
C. The switch enters the source MAC address and switch port into its MAC table.
Which two options are characteristics of a half-duplex operation? (Choose two.)
A. unidirectional data flow
B. point-to-point only
C. collision may be an issue
D. requires half-duplex support on both ends
E. attached to a dedicated switched port
A. unidirectional data flow
C. collision may be an issue
Which command displays the MAC address of the interface?
A. show interfaces
B. show running-config
C. show ip interface
D. show ip interface brief
A. show interfaces
Which type of physical medium is no longer used for Ethernet?
A. coaxial
B. twisted pair copper
C. fiber optic
D. all three listed options are still used
A. coaxial
Which option is not a fiber-optic connector type?
A. threaded
B. bayonet
C. push-pull
D. RJ-45
D. RJ-45
Which information will the switch read from the frame header and compare it to the list of addresses in the MAC table in order to forward a frame?
A. destination MAC address
B. source MAC address
C. destination IP address
D. source IP address
A. destination MAC address
Which three characteristics are full-duplex operation characteristics? (Choose three.)
A. unidirectional data flow
B. point-to-point only
C. legacy connectivity
D. attached to a dedicated switched port
E. collision may be an issue
F. requires full-duplex support on both ends
B. point-to-point only
D. attached to a dedicated switched port
F. requires full-duplex support on both ends
Which bit in the MAC address is referred as the U/L bit?
A. least significant bit in the first octet
B. most significant bit in the first octet
C. second least significant bit in the first octet
D. second least significant bit in the second octet
C. second least significant bit in the first octet
