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Intro to Networks-Cisco


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[Front]


A new network administrator has been asked to enter a banner message on a Cisco device. What is the fastest way a network administrator could test whether the banner is properly configured?
[Back]


Exit privileged EXEC mode and press Enter.

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Intro to Networks-Cisco - Detalles

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132 preguntas
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What happens when the transport input ssh command is entered on the switch vty lines?
Communication between the switch and remote users is encrypted.
What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?
It decrements the value of the TTL field by 1 and if the result is 0, it discards the packet and sends a Time Exceeded message to the source host.
Refer to the exhibit. What is wrong with the displayed termination?
The untwisted length of each wire is too long
Data is being sent from a source PC to a destination server. Which three statements correctly describe the function of TCP or UDP in this situation? (Choose three.)
-The UDP destination port number identifies the application or service on the server which will handle the data -UDP segments are encapsulated within IP packets for transport across the network. -The source port field identifies the running application or service that will handle data returning to the PC.
TCP/UDP
TCP-FTP, HTTP, SMTP UDP-DHCP, TFTP
What is a function of the data link layer?
Provides for the exchange of frames over a common local media
What are three characteristics of the CSMA/CD process? (Choose three.)
-After detecting a collision, hosts can attempt to resume transmission after a random time delay has expired. -All of the devices on a segment see data that passes on the network medium -A device listens and waits until the media is not busy before transmitting.
What characteristic describes a Trojan horse?
Malicious software or code running on an end device
What are two features of ARP? (Choose two.)
-If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply. -If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.
Refer to the exhibit. On the basis of the output, which two statements about network connectivity are correct? (Choose two.)
-There are 4 hops between this device and the device at 192.168.100.1. -There is connectivity between this device and the device at 192.168.100.1.
What are two characteristics of IP? (Choose two.)
Does not require a dedicated end-to-end connection operates independently of the network media
What will happen if the default gateway address is incorrectly configured on a host?
The host cannot communicate with hosts in other networks.
Which scenario describes a function provided by the transport layer?
A student has two web browser windows open in order to access two web sites. The transport layer ensures the correct web page is delivered to the correct browser window.
What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?
The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.
What does the term “attenuation” mean in data communication?
Loss of signal strength as distance increases
Which two statements describe how to assess traffic flow patterns and network traffic types using a protocol analyzer? (Choose two.)
Capture traffic during peak utilization times to get a good representation of the different traffic types. Perform the capture on different network segments.
Host B on subnet Teachers transmits a packet to host D on subnet Students. Which Layer 2 and Layer 3 addresses are contained in the PDUs that are transmitted from host B to the router?
Layer 2 destination address = 00-00-0c-94-36-ab Layer 2 source address = 00-00-0c-94-36-bb Layer 3 destination address = 172.16.20.200 Layer 3 source address = 172.16.10.200
What are two problems that can be caused by a large number of ARP request and reply messages? (Choose two.)
A large number of ARP request and reply messages may slow down the switching process, leading the switch to make many changes in its MAC table. The ARP request is sent as a broadcast, and will flood the entire subnet.
Which two functions are performed at the MAC sublayer of the OSI Data Link Layer to facilitate Ethernet communication? (Choose two.)
Integrates Layer 2 flows between 10 Gigabit Ethernet over fiber and 1 Gigabit Ethernet over copper implements CSMA/CD over legacy shared half-duplex media
Why would a Layer 2 switch need an IP address?
To enable the switch to be managed remotely
How does the service password-encryption command enhance password security on Cisco routers and switches?
It encrypts passwords that are stored in router or switch configuration files.
Which two statements are correct in a comparison of IPv4 and IPv6 packet headers? (Choose two.)
The Time-to-Live field from IPv4 has been replaced by the Hop Limit field in IPv6. The Source Address field name from IPv4 is kept in IPv6.
Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)
NAT provides a solution to slow down the IPv4 address depletion. NAT introduces problems for some applications that require end-to-end connectivity.
What service is provided by HTTP?
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
What service is provided by HTTP?
A basic set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the web.
What are the two most effective ways to defend against malware? (Choose two.)
Update the operating system and other application software. Install and update antivirus software.
What are proprietary protocols?
Protocols developed by organizations who have control over their definition and operation
Which information does the show startup-config command display?​
The contents of the saved configuration file in the NVRAM
What is an advantage for small organizations of adopting IMAP instead of POP?
Messages are kept in the mail servers until they are manually deleted from the email client.
What service is provided by Internet Messenger?
An application that allows real-time chatting among remote users.
What characteristic describes antispyware?
Applications that protect end devices from becoming infected with malicious software
Which two statements describe features of an IPv4 routing table on a router? (Choose two.)​
Directly connected interfaces will have two route source codes in the routing table: C and S . If a default static route is configured in the router, an entry will be included in the routing table with source code S .
What is the consequence of configuring a router with the ipv6 unicast-routing global configuration command?​
The IPv6 enabled router interfaces begin sending ICMPv6 Router Advertisement messages.
What characteristic describes adware?
Software that is installed on a user device and collects information about the user
What is the purpose of the TCP sliding window?
To request that a source decrease the rate at which it transmits data
A network technician is researching the use of fiber optic cabling in a new technology center. Which two issues should be considered before implementing fiber optic media? (Choose two.)
Fiber optic cabling requires different termination and splicing expertise from what copper cabling requires Fiber optic provides higher data capacity but is more expensive than copper cabling.
What is one main characteristic of the data link layer?
It shields the upper layer protocol from being aware of the physical medium to be used in the communication.