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Ch. 4 Study Exam
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Preguntas del test (25)
1Which standards organization defined the Ethernet standard?
- AIEEE
- BISO
- CANSI
- DDIX
2Which frame field is responsible for error checking?
- APreamble
- BSFD
- CFCS
- DLength/Type
3 While examining an 802.3 Ethernet frame from a packet capture, you notice the entry in the Type field is 0800 (in hex). Which of the following are true? (Choose two.)
- AThe entry indicates the length of the frame.
- BThe entry indicates the protocol being transported.
- CThe frame is 0800 bits in length.
- DThe frame is transporting an IPv4 packet.
4What is the total MTU for Ethernet?
- A1500
- B1518
- C1536
- D1537
5The MAC address of your NIC is 0A:12:3C:4B:67:DE. Which of the following represents the organizationally unique identifier?
- A0A:12:3C
- B4B:67:DE
- C12:3C:4B
- D3C:4B:67
6Twenty hosts are connected to a hub. Host A sends a unicast message to Host B. Which of the following is not true?
- AOnly Host B opens and processes the message.
- BAll hosts receive the message.
- CAll hosts open and process the message.
- DThe destination address field holds Host B’s MAC address.
7Your network has 20 computers connected to a hub. You want to increase performance by reducing the size of the collision domain as much as possible. Which of the following devices can be used to do this?
- AA hub
- BA bridge
- CA switch
- DNone of the above
8How does CSMA/CD react to collisions?
- AAll systems jam the network, and then all begin transmitting again.
- BHosts involved in a collision send an RTS signal indicating a time frame in which to retransmit.
- CHosts involved in the collision send a jamming signal and then run an algorithm before retransmitting.
- DCollisions do not occur on CSMA/CD.
9On an Ethernet network, PC1 sends a message to PC2. The message must cross two routers along the pathway. Which of the following statements are true concerning the communication between PC1 and PC2? (Choose all that apply.)
- AThe frame header changes twice during the time it is sent from PC1 to finally reaching its destination at PC2.
- BThe frame header changes three times during the time it is sent from PC1 to finally reaching its destination at PC2
- CThe packet header changes at each router in the delivery path.
- DThe packet header never changes during the delivery path.
- EPC1 broadcasts a DNS message to determine PC2’s MAC address before building the frame.
- FPC1 broadcasts an ARP request to determine PC2’s MAC address before building the frame
10Which IEEE standard equates to Fast Ethernet?
- A802.3
- B802.3u
- C802.3z
- D802.4
11What is the maximum segment length on 100Base-T?
- A100 meters
- B100 feet
- C500 feet
- D10 meters
12You connect a host to a switch. The host is capable only of half duplex. After the connection is negotiated, how should the interface DUPLX LED appear?
- AAmber
- BGreen
- CGreen/Amber
- DOff
13A switch is powered on for the first time. Ten devices, Hosts A through J, are connected to the switch. Which of the following are true for the first frame received by the switch? (Choose two.)
- AThe switch records the destination MAC address in the frame and the incoming interface pair in the CAM table.
- BThe switch records the source MAC address in the frame and the incoming interface pair in the CAM table.
- CThe frame is flooded to all other devices connected to the switch.
- DThe frame is sent only to the intended port.
14Hosts A through J have been connected to a switch for some time, with Host A on port 1, Host B on port 2, and so on. A user moves his system and connects Host A to interface 12. Immediately after the connection, Host A sends a unicast message to Host B. Which of the following are true? (Choose two.)
- AWhen the frame enters the switch, it is flooded to all interfaces.
- BWhen the frame enters the switch, it is sent directly to interface 2, and no other.
- CAfter this unicast message is sent, frames addressed to Host A will continue to be sent to interface 1.
- DAfter this unicast message is sent, frames addressed to Host A will be sent to interface 12.
15A host using a 10/100 NIC is connected to a Catalyst switch. The switch interface is configured for autonegotiate, but the NIC is not. Assuming speed can be determined by the switch, which of the following will autonegotiation default to for this scenario?
- A10 Mbps, half duplex
- B10 Mbps, full duplex
- C100 Mbps, half duplex
- D100 Mbps, full duplex
16Host A and Host B are connected to the same switch, and Host A sends a message to Host B. When the switch starts receiving the bits, it reads the destination MAC address, determines the port Host B is on, and immediately opens a channel to that port while bits are still being received. Which switch mode is being used?
- ACut through
- BStore and forward
- CFragment free
- DFull duplex
17Host A and Host B are connected to the same switch, and Host A sends a message to Host B. When the switch starts receiving the bits, it reads the first 64 bytes, determines the port Host B is on, and opens a channel to that port while bits are still being received. Which switch mode is being used?
- ACut Through
- BStore and Forward
- CFragment Free
- DFull Duplex
18You have 100-Mbps and 1000-Mbps hosts throughout your network. A new trainee asks you which switching method is used on your switches. Which is the correct response?
- ACut through
- BStore and Forward
- CFragment Free
- DFull Duplex
19A trainee is examining a switch. Port 1 is directly connected to another switch; however, the port’s LED is solid amber. The trainee asks whether this is a problem. You determine the LED mode is set to STAT. Which of the following is the correct response?
- AThis is not a problem since all ports are amber in STAT mode.
- BThis is a problem since no port should ever appear amber.
- CThis is a problem. STP has the port in a forwarding state.
- DThis is not a problem. STP has the port in a blocking state.
20According to Cisco design theory for a fully switched network, hosts do not connect directly to which types of switches? (Choose all that apply.)
- AAccess
- BCore
- CDistribution
- DCut Through
- EFragment Free
21Hosts A, B, C, and D are all connected directly to a switch with no additional configuration. Which of the following statements are true? (Choose all that apply.)
- AThere is one collision domain.
- BThere are four collision domains.
- CThere is one broadcast domain.
- DThere are four broadcast domains.
22Using Figure 4-17, which of the following statements are true? (Choose all that apply.)
- AHosts A and B are in the same collision domain.
- BHosts A and B are in different collision domains.
- CHosts C and D are in the same collision domain.
- DHosts C and D are in different collision domains.
- EHosts A, B, C, and D are in the same broadcast domain.
- FHosts A, B, C, and D are in different broadcast domains
23Using Figure 4-17, assuming all CAM tables are up to date, if Host A sends a broadcast message, which of the following are true statements? (Choose all that apply.)
- AHost B will receive the message.
- BHosts C, D, and E will receive the message.
- CHost F will receive the message.
- DHosts G and H will receive the message.
- EThe broadcast message is not propagated by the switch.
24Using Figure 4-17, assuming all CAM tables are up to date, if Host A sends a unicast message to Host E, which of the following is a true statement?
- AHosts B and E will process the message.
- BHosts C and D will process the message.
- CHosts F and G will process the message.
- DOnly Host E will process the message.
- EThe switch cannot forward the message.
25Using Figure 4-17, assuming all CAM tables are up to date, if Host A sends a unicast message to Host F, which of the following is a true statement?
- AHosts B and F will receive the message.
- BHosts G and H will receive the message.
- CHosts E and F will receive the message.
- DOnly Host F will receive the message.
- EThe switch cannot forward the message.
Información
- Descripción
- CCENT Information System Test sobre Ch. 4 Study Exam, creado por Darion Ward el 19/01/2017.
- Autor
- Darion Ward
- Idioma
- English
- Visitas
- 1
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