Fundamentals of Ethernet

C

A device uses MAC address 000c.42b9.46ee. Which part of the MAC address indicates the originating networking equipment vendor? The figure shows a MAC address: 000c.42b9.46ee. A 42b9 B b9.46ee C 000c.42 D 000c

D

An employee's office has an RJ-45 wall jack, which connects to a switch port on a switch that was manufactured in 2001 and is located in the wiring closet. The wall jack normally connects to the user's PC via a patch cable. On Monday morning, this user borrowed a patch cable from a co-worker's office (the cable that connected his co-worker's PC to the wall jack) and used it to connect from the wall jack to an old four-port hub he brought in from home that morning. He powered on the hub, and then connected his work computer to the hub with his original patch cable. Based on this scenario, which of the following is true? A The switch (in the wiring closet) that is now connected to the hub (in the worker's office) has four additional collision domains. B The user PC will have access to the corporate network, but at reduced throughput. C The switchport will operate at half duplex because it is connected to a hub. D The user PC will not have any access to the corporate network through the switch.

A

In the LAN for a small office, some user devices connect to the LAN using a cable, while others connect using wireless technology (and no cable). Which of the following is true regarding the use of Ethernet in this LAN? A Only the devices that use cables are using Ethernet. B Only the devices that use wireless are using Ethernet. C Both the devices using cables and those using wireless are using Ethernet. D None of the devices are using Ethernet.

B,E,F

In the figure, each Ethernet link is labeled with a number. Which of the following statements are true about this network? (Choose three answers.) The figure shows a PC1 connected to a switch SW1 with '1' written on the interface. SW1 is connected to a hub H1 and a switch SW3 with '2' and '7' written on the interfaces. SW3 is connected to a PC3, a PC7, and a switch SW2 with '15', '16', and '8' written on the interfaces. H1 is connected to SW2 with '3' written on the interface. SW2 is connected to a router R1 with '9' and to a PC2 with '4' written on the interfaces. R1 is connected to a switch SW4 with '10' written on the interface. SW4 is connected to a PC4 with '5', a hub H2 with '11', and a switch SW5 with '6' written on the interfaces. H2 is connected to a PC6 with '14' and a PC5 with '13' written on the interfaces. A Link 6 uses a straight-through cable. B Link 5 uses a straight-through cable. C Link 15 uses a rollover cable. D Link 10 uses a rollover cable. E If link 1 uses full duplex, frames sent by PC1 never collide with other frames on link 1. F Frames that SW1 sends over link 2 could collide with frames that SW2 sends over link 3.

A,C

In the figure, each link is labeled with a number. Switches have been given names that begin with SW, routers names that begin with R, and hubs names that begin with H. Which of the following statements are true about this network? (Choose two answers.) The figure shows a PC1 connected to a switch SW1 with '1' written on the interface. SW1 is connected to a hub H1 and a switch SW3 with '2' and '7' written on the interfaces. SW3 is connected to a PC3, a PC7, and a switch SW2 with '15', '16', and '8' written on the interfaces. H1 is connected to SW2 with '3' written on the interface. SW2 is connected to a router R1 with '9' and to a PC2 with '4' written on the interfaces. R1 is connected to a switch SW4 with '10' written on the interface. SW4 is connected to a PC4 with '5', a hub H2 with '11', and a switch SW5 with '6' written on the interfaces. H2 is connected to a PC6 with '14' and a PC5 with '13' written on the interfaces. A Link 11 uses a crossover cable. B Link 1 uses a crossover cable. C Link 15 uses a straight-through cable. D Link 6 uses a rollover cable.

B,C,F

Question 1 : The network in the figure uses CAT5 cabling with RJ-45 connectors. Which of the following statements are true about the wires inside the cable and the RJ-45 pins to which they are connected? (Choose three answers.) The figure shows the network which uses CAT5 cabling with RJ-45 connectors. Here, a PC1 (IP address 10.1.1.1 and mask 255.255.255.0) is connected to a switch SW1 (IP address 10.1.1.199 and mask 255.255.255.0) on the right. SW1 is connected to a switch SW2 (IP address 10.1.1.200 and mask 255.255.255.0) from top. SW2 is connected to a PC2 (IP address 10.1.1.2 and mask 255.255.255.0) on the left. Further, SW2 is connected to a router R1 (IP address 10.1.1.254 and mask 255.255.255.0) and R1 is connected to a PC3 with Console 0 and Serial Port. R1 is connected to another network through Serial 0/0 interface. A The cable from PC1 to SW1 connects pin 1 on one end to pin 3 on the other. B The cable from PC1 to SW1 connects pin 1 on one end to pin 1 on the other. C The cable from SW1 to SW2 connects pin 1 on one end to pin 3 on the other. D The cable from SW1 to SW2 connects pin 1 on one end to pin 1 on the other. E The cable from SW2 to R1 connects pin 1 on one end to pin 3 on the other. F The cable from SW2 to R1 connects pin 2 on one end to pin 2 on the other.

B,E

Question 10 : In the figure, CAT5 cabling with RJ-45 connectors is used. Which of the following statements are true about the wires inside the cable and the RJ-45 pins to which they are connected? (Choose two answers.) The figure shows the network which uses CAT5 cabling with RJ-45 connectors. Here, a PC1 (IP address 10.1.1.1 and mask 255.255.255.0) is connected to a switch SW1 (IP address 10.1.1.199 and mask 255.255.255.0) on the right. SW1 is connected to a switch SW2 (IP address 10.1.1.200 and mask 255.255.255.0) from top. SW2 is connected to a PC2 (IP address 10.1.1.2 and mask 255.255.255.0) on the left. Further, SW2 is connected to a router R1 (IP address 10.1.1.254 and mask 255.255.255.0) and R1 is connected to a PC3 with Console 0 and Serial Port. R1 is connected to another network through Serial 0/0 interface. A The cable from PC1 to SW1 connects pin 2 on one end to pin 7 on the other. B The cable from PC1 to SW1 connects pin 6 on one end to pin 6 on the other. C The cable from SW1 to SW2 connects pin 1 on one end to pin 8 on the other. D The cable from SW1 to SW2 connects pin 6 on one end to pin 3 on the other. E The cable from R1's console to PC3's serial port connects pin 8 on one end to pin 1 on the other. F The cable from R1's console to PC3's serial port connects pin 3 on one end to pin 1 on the other.

B

Question 11 : The PC connects to a switch and uses 100 Mbps Fast Ethernet. Which two pins are being used to transmit data from the PC to the switch? The figure shows a PC connected to a switch using 100 Mbps FastEthernet. A 1,3 B 1,2 C 2,6 D 3,6

A

Question 18 : Refer to the diagram; the new connection that is going between Campus 1 and Campus 2 routers is required to provide at least 500 Mbps of bandwidth; the routers are located 3000 meters away from each other. Which standard of Ethernet should be used in this situation? The figure shows the Ethernet connection between campus 1 and campus 2 routers. A 802.3z B 802.3ab C 802.3an D 802.3u

C,F

Question 21 : The network in the figure uses CAT5 cabling with RJ-45 connectors. Which of the following statements are true about the wires inside the cable and the RJ-45 pins to which they are connected? (Choose two answers.) The figure shows the network which uses CAT5 cabling with RJ-45 connectors. Here, a PC1 (IP address 10.1.1.1 and mask 255.255.255.0) is connected to a switch SW1 (IP address 10.1.1.199 and mask 255.255.255.0) on the right. SW1 is connected to a switch SW2 (IP address 10.1.1.200 and mask 255.255.255.0) from the top. SW2 is connected to a PC2 (IP address 10.1.1.2 and mask 255.255.255.0) on the left. Further, SW2 is connected to a router R1 (IP address 10.1.1.254 and mask 255.255.255.0) and R1 is connected to a PC3 with Console 0 and Serial Port at R1 and PC3, respectively. R1 is connected to another network through S0/0 interface. A The cable from PC1 to SW1 connects pin 6 on one end to pin 3 on the other. B The cable from PC1 to SW1 connects pin 2 on one end to pin 3 on the other. C The cable from SW1 to SW2 connects pin 6 on one end to pin 2 on the other. D The cable from SW1 to SW2 connects pin 2 on one end to pin 3 on the other. E The cable from SW2 to R1 connects pin 3 on one end to pin 6 on the other. F The cable from SW2 to R1 connects pin 6 on one end to pin 6 on the other.

D

R1#show arp Protocol Address Age (min) Hardware Addr Type Interface Internet 10.0.0.1 - 0018.b921.9278 ARPA FastEthernet0/0 Internet 10.0.0.5 5 0019.060c.90c0 ARPA FastEthernet0/0 From the output of R1, which of the following is accurate? A R1 has learned about the IP address of 10.0.0.1 less than 1 minute ago. B The Hardware Addr field represents a 32-bit Layer 2 address. C R1 will use the address of 0019.060c.90c0 as the Layer 3 address to reach 10.0.0.5. D The address of 0019.060c.90c0 is designed to be assigned to a single network interface card (NIC) and never duplicated on a different NIC.

B,D

Select the answers that list the correct cable types. (Choose two answers.) The figure shows the crossover cable between various devices. Here, a PC A on the left is connected to a switch SW1. It is connected to a switch SW2 and SW2 is inturn connected to a PC B at the bottom. Further, SW1 is connected to a router R1 and R1 is connected to a PC F at the bottom via console. R1 is connected to a CSU and CSU is connected to another CSU through leased line. CSU is connected to a router R2 and R2 is connected to a switch SW3. SW3 is connected to an API, a Hub1 and a PC E. API is connected to PC C and Hub1 is connected to PC D. A An Ethernet crossover cable between SW1 and R1 B An Ethernet crossover cable between SW3 and Hub1 C A rollover cable between SW3 and AP1 D A rollover cable between R1 and host F E A straight-through between SW1 and SW2

B,D

Select the answers that list the correct cable types. (Choose two answers.) The figure shows the crossover cable between various devices. Here, a PC A on the left is connected to a switch SW1. It is connected to a switch SW2 and SW2 is inturn connected to a PC B at the bottom. Further, SW1 is connected to a router R1 and R1 is connected to a PC F at the bottom via console. R1 is connected to a CSU and CSU is connected to another CSU through leased line. CSU is connected to a router R2 and R2 is connected to a switch SW3. SW3 is connected to an API, a Hub1 and a PC E. API is connected to PC C and Hub1 is connected to PC D. A An Ethernet crossover cable between SW1 and R1 B An Ethernet crossover cable between SW3 and Hub1 C A rollover cable between SW3 and AP1 D A rollover cable between R1 and host F E A straight-through between SW1 and SW2

B

This output comes from a network analysis tool. It lists a group of lines for each header in a PDU, with the frame (data link) header at the top, then the next header (typically the IP header), and so on. The first line in each section has a gray highlight, with the indented lines below each heading line listing details about the fields inside the respective header. You will need to remember some parts of the various headers, and compare those concepts to this output, to answer this question. The circled field, part of the Ethernet header, lists a value of hex 0800, which in this case means that an IP header follows next (as shown on the line below the circled field.) What is the name of that circled field? A Length B Type C SFD D Protocol

C

Which of the following Ethernet standards defines Gigabit Ethernet over UTP cabling? A 10GBASE-T B 100BASE-T C 1000BASE-T D None of the other answers is correct.

B,C,E

Which of the following are true about the format of Ethernet addresses? (Choose three answers.) A Each manufacturer puts a unique OUI code into the first 2 bytes of the address. B Each manufacturer puts a unique OUI code into the first 3 bytes of the address. C Each manufacturer puts a unique OUI code into the first half of the address. D The part of the address that holds this manufacturer's code is called the MAC. E The part of the address that holds this manufacturer's code is called the OUI. F The part of the address that holds this manufacturer's code has no specific name.

C,D,F

Which of the following describe CSMA/CD? (Choose three answers.) A Avoids loops B Transmits with a token C Handles collisions by retransmitting D Many devices can share a link E Same-sized frames F Waits for a quiet link before transmitting

B,E

Which of the following describe a MAC address? (Choose two answers.) A Layer 1 address B Layer 2 address C Layer 3 address D 32 bits E 48 bits F 128 bits

B

Which of the following is true about Ethernet crossover cables for Fast Ethernet? A Pins 1 and 2 are reversed on the other end of the cable. B Pins 1 and 2 on one end of the cable connect to pins 3 and 6 on the other end of the cable. C Pins 1 and 2 on one end of the cable connect to pins 3 and 4 on the other end of the cable. D The cable can be up to 1000 meters long to cross over between buildings. E None of the other answers is correct.

B

Which of the following is true about the CSMA/CD algorithm? A The algorithm never allows collisions to occur. B Collisions can happen, but the algorithm defines how the computers should notice a collision and how to recover. C The algorithm works with only two devices on the same Ethernet. D None of the other answers is correct.

C

Which of the following is true about the Ethernet FCS field? A Ethernet uses FCS for error recovery. B It is 2 bytes long. C It resides in the Ethernet trailer, not the Ethernet header. D It is used for encryption

C,D

Which of the following terms describe Ethernet addresses that can be used to send one frame that is delivered to multiple devices on the LAN? (Choose two answers.) A Burned-in address B Unicast address C Broadcast address D Multicast address

E,F

You have been given a Category 5 cable, terminated with RJ-45 connectors. The cable was terminated on each end based on T568A/T568B pinouts. What is the appropriate use for this cable? (Choose two answers.) The figure shows a Category 5 cable terminated with RJ-45 connectors. The cable is terminated on each end based on T568A/T568B pinouts. There are 8 pins in T568A and T568B. Pins 1 and 2 makes pair 3, 4 and 5 makes pair 1, 7 and 8 makes pair 4 for both T568A and T568B and pins 3 and 6 makes pair 2 for T568A and pair 3 for T568B. For Pair 2 T568A, pinouts are as: 1 is G/W, 2 is green, 3 is O/W, 4 is blue, 5 is blue/W, 6 is orange, 7 is brown/W, and 8 is brown. For Pair 3 T568B, pinouts are as: 1 is O/W, 2 is orange, 3 is G/W, 4 is blue, 5 is blue/W, 6 is green, 7 is brown/W, and 8 is brown. A Switch to router B Router to hub C Switch to PC D PC to hub E Switch to switch F Router to PC