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To pass the exam, candidates need to have a strong understanding of network design principles, including VLANs, routing protocols, and switch stacking. They also need to have a solid grasp of the different Cisco device families, such as routers, switches, and wireless access points, and be able to configure and troubleshoot them effectively.
NEW QUESTION # 27
Which command sends an echo request packet to the target host and then waits for an echo response message?
- A. echo
- B. access
- C. ping
- D. connect
Answer: C
NEW QUESTION # 28
Which Windows-based text editor is preferred for working with a simple text document, such as a Cisco configuration?
- A. Microsoft Word
- B. Microsoft Excel
- C. Microsoft Access
- D. Microsoft Notepad
Answer: D
Explanation:
Microsoft Notepad is the preferred text editor for working with Cisco configuration files and other simple text documents for several reasons:
Plain Text Focus: Notepad is designed specifically for plain text editing. It does not add any formatting, hidden characters, or metadata that could interfere with the configuration file's structure.
Cisco Syntax Compatibility: Cisco configurations rely on specific syntax and spacing. Notepad preserves these elements accurately.
Universality: Notepad is a basic text editor included in all versions of Windows, ensuring accessibility and eliminating the need for additional software.
Why other options are not ideal:
Microsoft Word: Word is a word processor and includes formatting, fonts, and other features that are not compatible with Cisco configuration files. This formatting can corrupt the configuration.
Microsoft Access: Access is a database management system, not suited for text file editing.
Microsoft Excel: Excel is a spreadsheet application and adds its own structure and formatting that conflicts with configuration file formats.
NEW QUESTION # 29
Which two sets of pins are looped on an RJ-45 56K loopback plug? (Choose two.)
- A. pins 2 and 8
- B. pins 2 and 7
- C. pins 1 and 7
- D. pins 2 and 5
- E. pins 1 and 4
Answer: D,E
Explanation:
An RJ-45 56K loopback plug is used to test the functionality of network ports, particularly for T1/56K lines. The correct loopback wiring for such a plug involves looping pins 1 and 4, as well as pins 2 and 5. This configuration allows the device to send and receive signals on the same wire pairs, effectively testing the transmit and receive paths of the port1.
NEW QUESTION # 30
Which command initiates the transfer of a Cisco IOS image over IP from ROMMON?
- A. tftpdnld
- B. copy tftp: flash:
- C. copy flash: tftp:
- D. Xmodem
Answer: A
Explanation:
The tftpdnld command is specifically designed to initiate a TFTP (Trivial File Transfer Protocol) transfer of an image within ROMmon mode on a Cisco device. Here's why it's the correct answer:
ROMmon Functionality: ROMmon (Read-Only Memory Monitor) is a basic operating system mode used when the main Cisco IOS is unavailable. The tftpdnld command works from ROMmon to download a new IOS image.
TFTP Protocol: The tftpdnld command utilizes TFTP, which is a simple and reliable protocol commonly used for transferring Cisco IOS images.
Purpose: The command is used primarily for recovering corrupt images or upgrading to a different IOS version.
Why other options are incorrect:
Xmodem: XMODEM is an older and less reliable file transfer protocol that's less suitable than TFTP for Cisco IOS image transfers.
copy tftp: flash: This command format is used within the Cisco IOS itself, not in ROMmon mode.
copy flash: tftp: This command format would attempt to upload an image from flash memory to a TFTP server, instead of downloading an image.
NEW QUESTION # 31
Which bits represent the boot field in the configuration register value?
- A. lowest two bits
- B. lowest four bits
- C. highest two bits
- D. highest four bits
Answer: B
Explanation:
Section: Cisco IOS Software Operation
NEW QUESTION # 32
Which two statements about Telnet and SSH are true? (Choose two.)
- A. SSH is a protocol that provides a secure remote access connection to network devices.
- B. A Telnet network management connection is dropped when a router reboots.
- C. Telnet is a protocol that provides a secure remote access connection to network devices.
- D. Telnet is preferred over SSH for security reasons.
- E. SSH uses the well-known TCP port 23 for its communication.
Answer: A,B
NEW QUESTION # 33
Which command shows the status of power supplies and sensor temperatures?
- A. show hardware
- B. show diag
- C. show module
- D. show environment
Answer: D
Explanation:
The show environment command in Cisco devices is used to display the status of the system's environment, including power supplies and sensor temperatures. This command provides a comprehensive overview of the environmental conditions affecting the device, such as temperature readings and power supply status.
Option A, show hardware, is not specific to power supplies and sensor temperatures. Option B, show module, displays information about the network modules installed in the device but not the environmental conditions. Option D, show diag, is used for diagnostic purposes and does not specifically provide the status of power supplies and sensor temperatures.
Therefore, the correct answer is C, show environment, which is the command that specifically shows the status of power supplies and sensor temperatures in Cisco devices12.
Reference:
Cisco Community discussions on power supply details1.
Cisco documentation on Environmental Monitoring and Power Management2.
NEW QUESTION # 34
Which type of memory stores the configuration of a router or switch by default?
- A. flash
- B. RAM
- C. NVRAM
- D. ROM
Answer: B
NEW QUESTION # 35
Which two IPv4 addresses are assigned to host computers? (Choose two.)
- A. 192.168.10.15
- B. 0.0.0.0
- C. 292.10.3.4
- D. 10.1.1.20
- E. 255.255.255.255
Answer: A,D
Explanation:
In the context of IPv4 addresses, a host address is an identifier for a specific device on a network. The addresses 10.1.1.20 and 192.168.10.15 are both within ranges typically reserved for private networks, making them suitable for assignment to host computers within a local network. Address 292.10.3.4 is not a valid IPv4 address because the first octet is beyond the maximum value of 255. Address 255.255.255.255 is reserved for broadcast messages to all hosts on the local network, and 0.0.0.0 is used to denote an unspecified address, often indicating the absence of an IP address123. Reference := IP address, Network address, and Host address Explained, IP address - Wikipedia, Understanding IP Addresses: How IP Addressing Works | ENP
NEW QUESTION # 36
Which two commands identify the serial number of a Cisco router? (Choose two.)
- A. show run
- B. show environment
- C. show version
- D. show archive
- E. show inventory
Answer: C,E
Explanation:
The commands that can be used to identify the serial number of a Cisco router are show inventory and show version. The show inventory command provides detailed information about the hardware inventory, including the serial numbers of the device and its components1. The show version command displays the router's configuration, including the version of the operating system, the last reboot reason, and the hardware serial number, which is listed as the "Processor board ID" in the command output2. These commands are essential for network administrators to document and manage network equipment.
NEW QUESTION # 37
Which command displays a list of file systems that are available on Cisco devices?
- A. show directory
- B. show memory
- C. show version
- D. show file system
Answer: D
Explanation:
Section: Cisco IOS Software Operation
NEW QUESTION # 38
Which type of port is used to connect a laptop to an Ethernet port on a Cisco router?
- A. straight-through
- B. rollover
- C. fiber
- D. crossover
Answer: A
Explanation:
Straight-through cables are the most common type of Ethernet cable. They're used to connect dissimilar devices, such as a laptop to a router or a switch to a router. The internal wiring of the cable connects the transmit pins on one end to the receive pins on the other end, and vice versa.
Crossover cables were historically necessary to connect similar devices (e.g., router to router, or switch to switch). Modern devices often have auto MDI-X capabilities, allowing them to automatically detect and adjust to straight-through or crossover connections as needed.
Rollover cables have a reversed pinout and are primarily used for console access into Cisco routers and switches.
Fiber cables use fiber optic technology for high-speed, long-distance connectivity.
Reference:
Cisco Networking Academy: Introduction to Networks Course
NEW QUESTION # 39
What is the line speed of a DS0 in North America?
- A. 128 kbps
- B. 16 kbps
- C. 32 kbps
- D. 64 kbps
Answer: D
Explanation:
Section: Cisco Equipment and Related Hardware
NEW QUESTION # 40
Which command initiates the transfer of a Cisco IOS image over IP from ROMMON?
- A. tftpdnld
- B. copy tftp: flash:
- C. copy flash: tftp:
- D. Xmodem
Answer: A
Explanation:
Section: Service-related Knowledge
NEW QUESTION # 41
What is the correct IPv6 address notation?
- A. 2001:0DB8::/128
- B. 2001:0DB8::1:1:1:1:1
- C. 2001:0DB8:130F:0000:0000:7000:0000:140B
- D. 2001:0DB8:0::
Answer: C
NEW QUESTION # 42
Which address facilitates the routing of packets over an IP network?
- A. MAC
- B. physical
- C. network
- D. transport
Answer: C
Explanation:
The address that facilitates the routing of packets over an IP network is the network address. In the context of IP networking, this refers to the IP address, which is used to identify each host on a network and to determine the best path for data packets to travel from their source to their destination. Routers use IP addresses to make decisions about where to forward packets so that they reach the correct destination. The network layer of the OSI model, where IP operates, is responsible for this routing process123.
The other options listed do not facilitate routing in the same way:
Physical (A) and MAC (D) addresses are used at the data link layer to deliver packets on the same local network.
Transport (B) refers to the transport layer, which is responsible for end-to-end communication and data flow control but does not route packets over an IP network.
NEW QUESTION # 43
What are two standard fiber-optic connectors? (Choose two.)
- A. Lucent
- B. subscriber
- C. rollover
- D. multidimension
- E. crossover
Answer: A,B
NEW QUESTION # 44
Which command initiates the copying of a Cisco IOS image to a Cisco device?
- A. copy tftp flash
- B. copy xmodem flash
- C. copy tftp nvram
- D. copy flash tftp
Answer: A
Explanation:
Section: Service-related Knowledge
Explanation
NEW QUESTION # 45
Which command displays a list of file systems that are available on Cisco devices?
- A. show directory
- B. show memory
- C. show version
- D. show file system
Answer: D
NEW QUESTION # 46
Which type of memory stores the configuration of a router or switch by default?
- A. flash
- B. NVRAM
- C. ROM
- D. RAM
Answer: B
Explanation:
NVRAM (Non-Volatile Random Access Memory) is the default storage location for the startup configuration file of a Cisco router or switch.expand_more Here's why:
Non-Volatility: NVRAM retains its contents even when the device loses power.expand_more This is essential for storing the startup configuration, which contains critical settings like interface configurations, routing protocols, and passwords.
Read/Write Capability: Unlike ROM, NVRAM allows you to both read and write data. This makes it possible to modify the configuration and save the changes into NVRAM as the startup configuration.
Other Memory Types and Their Functions:
RAM (Random Access Memory): RAM is volatile memory, meaning it loses its contents when the device is powered off.expand_more It's used to store the running configuration (currently active configuration), routing tables, and other temporary data required for the device's operation.
ROM (Read-Only Memory): ROM is non-volatile and stores the bootstrap program used to initiate the boot process of the device.expand_more It's not modifiable by the user.expand_more Flash: Flash memory is also non-volatile.expand_more It's primarily used to store the Cisco IOS image (operating system) and can also store backup configuration files and other data.
NEW QUESTION # 47
Which device is a DTE device?
- A. DSL modem
- B. cable modem
- C. CSU/DSU
- D. router
Answer: D
Explanation:
Section: General Networking Knowledge
NEW QUESTION # 48
How many pairs of copper wire does a UTP cable have?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 49
Which two pairs of LAN Ethernet devices use an RJ-45 straight-through cable? (Choose two.)
- A. router-to-router
- B. switch-to-server
- C. switch-to-router
- D. switch-to-switch
- E. switch-to-hub
Answer: B,C
NEW QUESTION # 50
Which command sends an echo request packet to the target host and then waits for an echo response message?
- A. echo
- B. access
- C. ping
- D. connect
Answer: C
Explanation:
Section: Cisco IOS Software Operation
NEW QUESTION # 51
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