CCNA 1 Exploration 4.0 : Module 1 Answers with Explanation

CCNA stands for Cisco Certified Network Associate. This page contains the examination questions and answers of CCNA 1 Module 1 of CCNA Exploration 4.0. All the questions are taken form different pay-sites, blogs and webpages which are offering several question sets. This page doesn't contain 100% actual question. The questions of CCNA are changing continuously. But don't feel sorrow. I think you will get 50% to 100% questions form here in your examination. All the questions and answers are explained here very carefully.

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Question 01
The console port can be used for which of the following? (Choose three.)

1. debugging.
2. password recovery.
3. routing data between networks.
4. troubleshooting.
5. connecting one router to another.

Correct answer: 1, 2 and 4
Explanation: By using router console port you can configure router, can set password and recover password, troubleshooting etc. So, options 1, 2 and 4 are the correct answers. But to route data between networks, you need to define routing protocol. So, option 3 is incorrect. To connect one router to another you need a physical medium. There is no use of console port. So, option 5 is incorrect.

Question 02

Select the statements that correctly describe flash memory in a 2600 series router? (Choose two.)

1. holds the startup configuration by default.
2. can be upgraded with single in-line memory modules.
3. stores Cisco IOS software images.
4. stores routing table information by default.
5. maintains the only copy of an IOS image after the router is booted.

Correct answer: 2 and 3
Explanation: Flash memory is an erasable, programmable read-only memory which holds operating system image and microcode. It allows software to be updated without removing any chips and content remain when powered down pr restart. For this reason, 2 and 3 are the correct answers.

Question 03

Which of the following are functions of NVRAM? (Choose two.)

1. stores the routing table.
2. retains contents when power is removed.
3. stores the startup configuration file.
4. contains the running configuration file.
5. stores the ARP table.

Correct answer: 2 and 3
Explanation: NVRAM stores the backup/startup configuration file for the router. It retains conten when the router is powered down or restarted.

Question 04

Which of the following descriptions are true regarding the management connections on a Cisco router? (Choose three.)

1. They are non-network connections.
2. They are used to connect the router to the rest of the production network.
3. They are synchronous serial ports.
4. They are used for initial router configuration.
5. They are asynchronous serial ports.
6. They are accessed using their assigned IP address.

Correct answer: 1, 2 and 4
Explanation: Management connections of Cisco router are used to configuration router. These are non-network connections. So, option 1, 2 and 4 are the correct answers. Option 3 and 4 are not correct because it's not a synchronous or asynchronous serial ports. Management connections has no IP address. So, option 6 is not also the correct answer. So, options 1, 2 and 4 are the correct answers.

Question 05

An internetwork must include which of the following? (Choose three.)

1. switching.
2. static addressing.
3. IETF standardization.
4. dynamic or static routing.
5. consistent end-to-end addressing.
   

Correct answer: 1, 4 and 5
Explanation: Internetwork includes switching, dynamic or static routing and it's capable of addressing at the end-to-end addressing. So, option 1, 4 and 5 are correct. Internetwork doesn't include IETF standardization or static addressing.

Question 06

Which of the following are functions of RAM? (Choose three.)

1. contains startup configuration file.
2. stores routing table.
3. holds fast switching cache.
4. retains contents when power is removed.
5. stores running configuration file.

Correct answer: 2, 3 and 5
Explanation: Cisco RAM has the following characteristics:

• stores routing information
• address resolution protocol (ARP)
• fast-switching cache
• packet buffering
• packet hold queues
• RAM contents are lost if power is down or restarted
• provides temporary running memory.

For the above reasons, 2, 3 and 5 options are correct.

Question 07

Terminal emulatror software, such as HyperTerminal, can be used to configure a router. Which of the following HyperTerminal options shown in the graphic are correctly set to allow configuration of a Cisco router? (Choose three.)

1. bits per second.
2. data bits.
3. parity.
4. stop bits.
5. flow control.

Correct answer: 2 3 and 4

Question 08

Several Ethernet hosts on a LAN need the gateway services of a Cisco 2500 series router. Which of the following would be needed to physically connect a router to all of the hosts on the LAN? (Choose two.)

1. a crossover cable between the transceiver on a router and a switch.
2. a crossover cables between a switch and hosts on a LAN.
3. a straight-through cable between the auxiliary port on a router and a switch.
4. a rollover cable between the console port on a router and a switch.
5. straight-through cables between a switch and hosts on a LAN.
6. a straight-through cable between the transceiver on a router and a switch.
   

Correct answer: 5 and 6
Explanation:
Straight-through cables are used for the following types of cabling:

• switch to router
• switch to PC or server
• hub to PC or server

Crossover cables are used for the following types of cabling:

• switch to switch
• PC to PC
• hub to hub
• router to router
• router to PC

For the above reasons 5 and 6 are the only true answers.

Question 09

Why is a console connection to a router or switch preferred when troubleshooting? (Choose two.)

1. can be accessed remotely.
2. does not depend on network services.
3. displays startup and error messages by default.
4. does not require special components.

Answer:

Correct answer: 2 and 3
Explanation:  Console connection doesn't depend on networking services. Moreover, by using this type of connection the startup and error message can be easily captured. That's why 2 and 3 are the correct answers. And the others are not true answers.

Question 10

What do routers use to select the best path for outgoing data packets?

1. ARP tables.
2. bridging tables.
3. routing tables.
4. switching tables.

Correct answer: 3
Explanation: Router has a routing table and the routing table is used for outgoing data packets. So, option 3 is the correct answer.

Question 11

Which of the following tasks can be accomplished through a management connection on a router? (Choose three.)

1. troubleshooting problems.
2. monitoring the system.
3. capturing LAN data packets.
4. configuring the router.
5. routing data packets.

Correct answer: 1, 2 and 5
Explanation: By using management connection, you can configure router, troubleshoot and monitor the system. So, 1, 2 and 5 are the correct answers.

Question 12

Which basic components do a router and a standard desktop PC have in common? (Choose three.)

1. CPU.
2. hard drive.
3. input/output interfaces.
4. keyboard.
5. monitor.
6. system bus.

Correct answer: 1, 3 and 6
Explanation: A router doesn't have any monitor, keyboard and hard drive. So, 2, 4 and 5 are the incorrect answer. The correct answers are 1, 3 and 6.

Question 13

Which of the following describes the function of a WAN?

1. connects peripherals in a single location.
2. connects multiple networks in a single building.
3. provides connectivity on a LAN.
4. provides connectivity over a large geographic area.
   

Correct answer: 4
Explanation:WAN means Wide Area Network which connects a large geographical area network. So, 4 is the only one correct answer.

Question 14

ABC Company just purchased three new routers to start their company network. Which items are needed to establish a terminal session between a PC and the router for the initial configuration? (Choose three.)

1. straight-through cable.
2. terminal emulation software.
3. rollover cable.
4. RJ-45 to DB-9 connector.
5. V.35 cable.

Correct answer: 2 3 and 4
Explanation: To connect a PC and a router, you need one rollover cable, RJ-45 to DB-9 connectors and you need a software which is the terminal emulator software. So, 2, 3 and 4 are the correct answers.

Question 15

During the initial configuration of a 2600 series Cisco router, which cable is required for connecting a PC to the console port?

1. twisted
2. crossover
3. rollover
4. straight

Correct answer: 3
Explanation: To connect a PC and a router, a crossover cable is used. But when you are configuring your router, then a rollover cable is used. For more explanation, see explanation of question 08.

Question 16

What contains the instructions that a router uses control the flow of traffic through its interfaces?

1. packet configuration.
2. configuration files.
3. flash memory.
4. internal components.

Correct answer: 2
Explanation: Only the configuration file can control the flow of traffic through its interface.So, option 2 is the correct answer.

Question 17

Which of the followings are true regarding router interfaces? (Choose three.)

1. provide temporary memory for the router configuration files.
2. connect the router to the network for packet entry and exit.
3. can be on the motherboard or a separate module.
4. hold the IOS image.
5. connect the router to LANs and WANs.

Correct answer: 2 3 and 5
Explanation: By using a router, you can connect LANs and WANS. So, option 5 is correct. All the interfaces are placed on motherboard. So, option 3 is also correct. By using the interfaces the packets are coming and out. So, option 2 is also correct. So, option 2, 3 and 5 are the correct answers.

Question 18

Which of the following devices are used in the construction of a WAN? (Choose three.)

1. hubs.
2. routers.
3. communication servers.
4. transceivers.
5. modems.
6. multi-port repeaters.

Correct answer: 2 3 and 5
Explanation:
WAN is used to communicate large distance network. So, routers, communication servers and modems are used here. So, 2, 3 and 5 are the correct answers.

Question 19

Which router component holds the configuration file when power is lost?

1. volatile random access memory.
2. read only memory.
3. non-volatile random access memory.
4. flash memory.

Correct answer: 3
Explanation: See the explanation of question 3.

Question 20

Which of the following layers of the OSI model are incorporated in WAN standards? (Choose two.)

1. physical layer.
2. application layer.
3. transport layer.
4. data link layer.
5. session layer.

Correct answer: 1, 4
Explanation: Physical layer, Data Link layer and Network Layer are the incorporated in WAN standards. So, 1 and 4 are the correct answers.

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