Which of the following Ethernet rates requires an optical cable to operate?
A. 10 Mb/s Ethernet.
B. 100 Mb/s Ethernet.
C. 1000 Mb/s Ethernet .
D. There are copper and optical versions possible for all of these Ethernet data rates.
What is the meaning of carrier sense in the CSMA/CD algorithm?
A. The host will retransmit the frame if it detects a collision during transmission.
B. The host is able to detect the transmission speed of the Ethernet switch port to which the host is connected.
C. The host will only transmit data when it detects that no other devices are transmitting.
D. The host will only transmit upon a timer expiry.
E. The host will only transmit when it receives the token.
What is the effective maximum rate of data transmission on a 10 Mbps full-duplex Ethernet link?
A. 5 Mbps.
B. 10 Mbps.
C. 15 Mbps.
D. 20 Mbps.
Which of the following type of addressing scheme delivers information from one source to all devices who
are members of a specific group?
A. Anycast.
B. Multicast.
C. Broadcast.
D. Unicast.
Which of the following is true of Ethernet half-duplex transmission?
A. Half-duplex transmission is less efficient because the frame MTU is smaller.
B. Half-duplex transmission is only 30-40% efficient because of collisions.
C. Ethernet switches support half-duplex transmission only.
D. All of the above.
In MAC Address 00-20-60-CE-2B-28, which part is the Organizationally Unique Identifier (OUI)?
A. 2B-28
B. 00-20
C. CE-2B-28
D. 00-20-60
How is Ethernet II different from Ethernet 802.3?
A. Ethernet 802.3 can only be used on point-to-point links, while Ethernet II can be used on broadcast networks.
B. In Ethernet II the 2 bytes after the source MAC address is used as a type indicator. In Ethernet 802.3 these two bytes indicate the length of the frame.
C. In Ethernet 802.3, the 2 bytes after the source MAC address is used as a type indicator. In Ethernet II these two bytes indicate the length of the frame.
D. Ethernet II and Ethernet 802.3 are two different names for the same protocol
Which Ethernet frame field does the receiver use to verify the integrity of the received bits?
A. Destination address
B. Frame check sequence
C. Preamble
D. Length field
Which of the following are examples of Time Division Multiplexing (Choose two)?
A. Ethernet.
B. Token-Ring.
C. SONET/SDH.
D. E1 carrier.
E. PPP
How many DS-3 frames can be transported in an OC-3 frame?
A. 1
B. 2
C. 3
D. 4
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