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D is incorrect; this only part of the MAC address thus incorrect.
F is incorrect; this is the IPX address. As stated previously this address is part layer 3 and part layer 2.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 332 and 345-6.
Q. 10
Which devices operate at all seven layers of the OSI model? (Choose three.)
A. Network host
B. Network management station
C. Transceiver
D. Bridge
E. Web server
F. Switch
Answer: A, B, E
Explanation: The three devices that operate at all seven layers of the OSI model are network hosts, network
management station and web server. This is how these devices are able to perform their functions.
Incorrect Answers:
C is incorrect; a transceiver is not used in a network environment.
D is incorrect; a bridge is a Layer 2 device.
F is incorrect; a switch is a Layer 2 device.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 21-22.
Q. 11
With the hierarchical numbering of IP addresses what determines the portion of the address that will
identify the network number?
A. Subnet Mask
B. Dots between octets
C. Class of first octet
D. Assignments of DHCP
E. Address Resolution Protocol