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1 | |
Which of the following are 100BaseT cable types? |
| | A) | CAT 3 |
| | B) | CAT 5 |
| | C) | CAT 5e |
| | D) | 10BaseFL |
| | E) | Answers A, B, and C |
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2 | |
What is the physical limit for the number of ports on an Ethernet hub? |
| | A) | 24 |
| | B) | 256 |
| | C) | 512 |
| | D) | 1024 |
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3 | |
When a network device can only send data or receive data, but not both at the same time, it is operating in what mode? |
| | A) | Duplex |
| | B) | Full-duplex |
| | C) | Half-duplex |
| | D) | Halfplex |
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4 | |
What important backbone technology is also known as Gigabit Ethernet? |
| | A) | 100BaseT |
| | B) | 100BaseFL |
| | C) | 100BaseFX |
| | D) | 1000BaseT |
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5 | |
What are the two major UTP variations of Fast Ethernet? |
| | A) | 100BaseTL |
| | B) | 100BaseTX |
| | C) | 100BaseFL |
| | D) | 100BaseT4 |
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6 | |
What are three limitations of Fast Ethernet over UTP? |
| | A) | Distance is restricted to 100 meters from node to hub. |
| | B) | Shielding may be inadequate for some installations. |
| | C) | Intrusion from outsiders may be possible without detection. |
| | D) | The obsolete technology is insufficient for most networks. |
| | E) | Answers A, B, and C |
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7 | |
Which standard defines Fast Ethernet using fiber cabling? |
| | A) | 10BaseFL |
| | B) | 100BaseFX |
| | C) | 100BaseT4 |
| | D) | 100BaseTX |
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8 | |
Which of the following are fiber connector types? |
| | A) | LC |
| | B) | LS |
| | C) | MT-RJ |
| | D) | ST |
| | E) | Answers A, C, and D |
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9 | |
What do you need to connect varying 10 GbE cable types to the same router? |
| | A) | SFF connectors on all cables |
| | B) | SC connectors on all cables |
| | C) | Multisource agreements on the router |
| | D) | This is not possible. |
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10 | |
Which standard defines Gigabit Ethernet over twisted-pair copper wire? |
| | A) | 802.3ab |
| | B) | 802.3e |
| | C) | 802.3GbUTP |
| | D) | 802.3z |
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11 | |
You’ve lost the manual to your router. How can you tell the difference between a 1000BaseT port and a 100BaseT port on a router just by looking? |
| | A) | The 1000BaseT ports are noticeably larger. |
| | B) | The 100BaseT ports are green, whereas the 1000BaseT ports are gray. |
| | C) | 1000BaseT ports are reversed with the clip on the top. |
| | D) | You can’t tell the difference by looking. They look exactly the same. |
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12 | |
Which statement about Ethernet is correct? |
| | A) | Only 10- and 100-megabit Ethernet may use
a hub. Gigabit Ethernet must use a switch. |
| | B) | 10- and 100-megabit Ethernet has a limit of 1024 nodes. Gigabit Ethernet has no limit. |
| | C) | Gigabit Ethernet that uses UTP cabling has a maximum distance between the node and switch of 250–400 meters, depending on the manufacturer. |
| | D) | All versions of 10 Gigabit Ethernet use the same cabling. |
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13 | |
What will happen if you connect a 10BaseT NIC
to an auto-sensing switch? |
| | A) | The switch will operate in hub mode. |
| | B) | The entire switch will operate at 10 megabits, even if 100-megabit devices are attached. |
| | C) | The 10BaseT NIC will operate at 10 megabits while connected 100-megabit devices will operate at their full speed of 100 megabits. |
| | D) | The 10BaseT NIC will overclock to run at 100 megabits. |
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14 | |
What benefit does full-duplex offer? |
| | A) | It allows all NICs on a hub to send signals at the same time without collisions. |
| | B) | It doubles the bandwidth of the network. |
| | C) | It doubles the speed of the network. |
| | D) | It doubles both the bandwidth and the speed of the network. |
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15 | |
What is the difference between the R and W designations in 10GBase standards, such as 10GBaseLR and 10GBaseLW, or 10GBaseER and 10GBaseEW? |
| | A) | The R indicates “regular," or half-duplex. The W indicates “wide mode," which is the 10 Gigabit Ethernet version of full-duplex. |
| | B) | The R indicates “read," or the ability to receive signals; the W indicates “write," or the ability to send signals. |
| | C) | The R and W indicate differences in the circuitry, with the W versions used to connect to SONET equipment. |
| | D) | The R indicates the use of UTP, whereas the W indicates the use of fiber optics. |
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