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NEW QUESTION # 25
What are two ways Telnet and SSH function? (Choose two.)
- A. SSH is a protocol that provides a secure remote access connection to network devices.
- B. Telnet is a protocol that provides a secure remote access connection to network devices.
- C. SSH uses the well-known TCP port 23 for its communication.
- D. Telnet is preferred over SSH for security reasons.
- E. A Telnet network management connection is dropped when a router reboots.
Answer: A,E
Explanation:
* A. SSH...secure remote access: This is correct. SSH (Secure Shell) is designed specifically for secure remote access. It utilizes strong encryption to protect data transmissions, including login credentials and commands.
* B. Telnet...secure remote access: This is incorrect. Telnet is inherently insecure as it transmits all data, including sensitive passwords, in cleartext.
* C. SSH uses...TCP port 23: This is incorrect. SSH uses TCP port 22 by default, while Telnet uses TCP port 23.
* D. Telnet preferred...security reasons: This is incorrect. SSH is vastly preferred over Telnet due to its strong security features.
* E. Telnet connection...router reboots: This is correct. Telnet connections are not persistent, so a router reboot disrupts them. This re-enforces their lack of suitability for critical management tasks.
Key Points:
* Security: SSH is the recommended protocol for remote access to network devices due to its strong encryption and authentication mechanisms.
* Persistence: Telnet connections are temporary and get disrupted on events like router reboots.
NEW QUESTION # 26
Which two statements about a SmartJack are true? (Choose two.)
- A. It operates at Layer 2 of the OSI model.
- B. It acts as a concentration point for dial-in and dial-out connections.
- C. It provides signal conversion.
- D. It regenerates the signal to compensate for signal degradation from line transmission.
- E. It provides channel testing.
Answer: C,D
Explanation:
Section: Cisco Equipment and Related Hardware
Explanation
NEW QUESTION # 27
Which type of port is used to connect a laptop to an Ethernet port on a Cisco router?
- A. fiber
- B. straight-through
- C. rollover
- D. crossover
Answer: B
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 # 28
Which command sends an echo request packet to the target host and then waits for an echo response message?
- A. echo
- B. connect
- C. access
- D. ping
Answer: D
NEW QUESTION # 29
Which two pieces of information are displayed when you use the show ip interface brief command? (Choose two.)
- A. Layer 2 address
- B. keepalive
- C. Layer 3 address
- D. encapsulation type
- E. interface status
Answer: C,E
NEW QUESTION # 30
Which two Cisco Nexus 3400 Series switches support 400-Gbps Ethernet ports? (Choose two.)
- A. Cisco Nexus 3408-S
- B. Cisco Nexus 34200YC-SM
- C. Cisco Nexus 3432D-S
- D. Cisco Nexus 3464C
- E. Cisco Nexus 34180YC
Answer: A,C
Explanation:
Section: Cisco Equipment and Related Hardware
Explanation/Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3400s/sw/922/interfaces/ configuration/guide/b_Cisco_Nexus_3400_NX-OS_Interfaces_Configuration_Guide_922/ b_Cisco_Nexus_3400_NX-OS_Interfaces_Configuration_Guide_9z_chapter_010.html
NEW QUESTION # 31
Which type of memory stores the decompressed form of Cisco IOS Software and the running configuration?
- A. NVRAM
- B. DRAM
- C. flash
- D. ROM
Answer: B
Explanation:
The decompressed form of Cisco IOS Software and the running configuration are stored in DRAM (Dynamic Random-Access Memory) on Cisco devices. DRAM is used as the main memory for the device, where the operating system runs and the running configuration is stored. When a Cisco device boots up, the IOS image is decompressed and loaded into DRAM, and the running configuration is also held in this memory type. It's important to note that DRAM is volatile memory, which means its contents are lost when the device is powered off or restarted12. Reference := Maintaining System Memory Configuration Guide, Cisco IOS Release 15M&T - Cisco, Types of memory on a Cisco device - Study-CCNA
NEW QUESTION # 32
What is the primary method for recovering or upgrading a Cisco network device system image?
- A. USB storage
- B. FTP
- C. the xmodem command
- D. the tftpdnld command
Answer: D
NEW QUESTION # 33
Refer to the exhibit.
Which two statements about the hardware components are true? (Choose two.)
- A. 2 is an RJ-45 to USB Type A console cable.
- B. 1 is a USB Type A port.
- C. 3 is a USB 5-pin mini USB Type B port.
- D. 3 is a USB Type A port.
- E. 2 is a USB 5-pin mini USB Type B to USB Type A console cable.
Answer: D,E
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/routers/access/2900/hardware/installation/guide/ Hardware_Installation_Guide/Install_Connect.html
NEW QUESTION # 34
Which two commands are valid for copying a saved configuration to RAM? (Choose two.)
- A. copy running-config startup-config
- B. copy startup-config running-config
- C. copy tftp startup-config
- D. copy running-config tftp
- E. copy tftp running-config
Answer: B,E
NEW QUESTION # 35
Which two statements about a SmartJack are true? (Choose two.)
- A. It operates at Layer 2 of the OSI model.
- B. It acts as a concentration point for dial-in and dial-out connections.
- C. It provides signal conversion.
- D. It regenerates the signal to compensate for signal degradation from line transmission.
- E. It provides channel testing.
Answer: C,D
Explanation:
SmartJacks are specialized devices used in telecommunications, particularly for T1/E1 lines. Here's why the correct answers make sense:
Signal Conversion: SmartJacks can convert between different signaling types (e.g., AMI to B8ZS). This is necessary because different telecommunication lines may use varying signaling standards.exclamation Signal Regeneration: As signals travel over long distances, they can weaken and degrade.expand_more SmartJacks help regenerate the signal, ensuring that it maintains its strength and integrity throughout the transmission.expand_more Why other options are incorrect:
Concentration point: SmartJacks are not primarily used as concentration points for dial-in/out connections.exclamation This function is typically handled by modems or other specialized devices.exclamation Layer 2 operation: SmartJacks primarily operate at Layer 1 (Physical Layer) of the OSI model, focusing on the physical transmission of signals.
Channel Testing: While some SmartJacks may offer some basic channel testing capabilities, their primary functions are signal conversion and regeneration.
Reference:
SmartJack (Wikipedia): https://en.wikipedia.org/wiki/Smartjack
NEW QUESTION # 36
Cisco NX-OS has added the ability to use which type of custom scripting to help manage user networks?
- A. Collective
- B. SQL
- C. Python
- D. C++
Answer: C
NEW QUESTION # 37
Which method is the fastest way to recover a software version that supports a USB flash port on a Cisco device?
- A. copy tftp flash: command
- B. copy command with USB memory
- C. tftp command
- D. xmodem transfer command
Answer: B
NEW QUESTION # 38
Which type of port on a laptop is used to connect to an Ethernet port on a Cisco switch?
- A. RJ-45
- B. RJ-11
- C. DB-9
- D. DVI
Answer: A
Explanation:
RJ-45 is the standard connector used for Ethernet networks. Here's why it's the correct answer:
Compatibility: Ethernet ports on both laptops and Cisco switches use RJ-45 connectors. This makes RJ-45 cables ideal for direct connections between these devices.
Appearance: RJ-45 ports are rectangular and slightly larger than typical phone jacks (RJ-11). They have eight metal pins inside.
Why other options are incorrect:
DVI: DVI ports are used for video connections between computers and displays.
RJ-11: RJ-11 ports are primarily associated with analog phone lines and are smaller than RJ-45.
DB-9: DB-9 connectors were traditionally used for serial connections on older computers and peripherals.
NEW QUESTION # 39
What does Cisco use for Return Materials Authorization tracking of field-replaceable parts?
- A. product number
- B. FRU number
- C. RMA number
- D. serial number
Answer: C
NEW QUESTION # 40
Which type of transceiver module is used for 40 Gigabit Ethernet connectivity?
- A. GBIC
- B. SFP+
- C. XFP
- D. QSFP+
Answer: D
Explanation:
Reference:
https://www.cisco.com/c/en/us/products/interfaces-modules/40-gigabit-modules/ index.html#:~:text=The%20Cisco%20QSFP%20BiDi%20transceiver,10%20Gigabit%20Ethernet%20fiber% 20infrastructure
NEW QUESTION # 41
Which type of memory stores the decompressed form of Cisco IOS Software and the running configuration?
- A. NVRAM
- B. DRAM
- C. flash
- D. ROM
Answer: B
Explanation:
Section: Cisco IOS Software Operation
Explanation
NEW QUESTION # 42
Which two Cisco Nexus 3400 Series switches support 400-Gbps Ethernet ports? (Choose two.)
- A. Cisco Nexus 3408-S
- B. Cisco Nexus 34200YC-SM
- C. Cisco Nexus 3432D-S
- D. Cisco Nexus 3464C
- E. Cisco Nexus 34180YC
Answer: A,C
Explanation:
The Cisco Nexus 3432D-S and Cisco Nexus 3408-S are part of the Cisco Nexus 3400 Series switches that support 400-Gbps Ethernet ports. The Cisco Nexus 3432D-S is designed with 32 ports of 400G, providing high-density and high-throughput capabilities1. The Cisco Nexus 3408-S offers flexibility with 100G or 400G Line-Card Expansion Modules (LEMs), allowing for configurations with 32 ports of 400G2. These switches are engineered for data centers requiring high performance, low latency, and power efficiency, with the Cisco Nexus 3432D-S offering industry-leading performance-per-watt power efficiency at low latency1.
NEW QUESTION # 43
Which two pairs of LAN Ethernet devices use an RJ-45 straight-through cable? (Choose two.)
- A. switch-to-hub
- B. switch-to-switch
- C. router-to-router
- D. switch-to-router
- E. switch-to-server
Answer: D,E
Explanation:
Questions no : 12 Verified answer: = B. switch-to-router, E. switch-to-server Switch-to-Router: A switch connects devices within a network by using MAC addresses to forward data to the correct destination. A router, on the other hand, connects multiple networks and uses IP addresses to determine the best path for the data packets. Connecting a switch to a router requires a straight-through cable because they are different types of devices12.
Switch-to-Server: Servers are the powerful computers that provide resources, data, services, or programs to the client machines in the network. When connecting a switch to a server, a straight-through cable is used because the switch and the server are different types of devices with different functions within the network12.
NEW QUESTION # 44
An Ethernet interface is up and the line protocol is down. What are two possible causes? (Choose two.)
- A. There is a Layer 2 mismatch in the encapsulation type.
- B. The Ethernet cable might not be attached properly.
- C. Keepalives are not being received by the local device.
- D. There is a speed or duplex mismatch with the remote device.
- E. The Ethernet interface has been manually disabled.
Answer: A,D
Explanation:
Section: Service-related Knowledge
NEW QUESTION # 45
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