компфина

A client packet is received by a server. The packet has a destination port number of 143. What service is the client requesting

• • Telnet

• • SSH

• • IMAP

• FTP

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?

• • Enter CTRL-Z at the privileged mode prompt.

  
  

• • Power cycle the device.

  
  

• • Exit privileged EXEC mode and press Enter.

  
  

• • Exit global configuration mode.

  
  

• Reboot the device.
  

What happens when the transport input ssh command is entered on the switch vty lines?

• • The switch requires a username/password combination for remote access.

  
  

• • The SSH client on the switch is enabled.

  
  

• • Communication between the switch and remote users is encrypted.

  
  

• The switch requires remote connections via a proprietary client software.
  

What is the subnet ID associated with the IPv6 address 2001:DA48:FC5:A4:3D1B::1/64?

• • 2001:DA48::/64​

  
  

• • 2001::/64

  
  

• • 2001:DA48:FC5:A4::/64​

  
  

• 2001:DA48:FC5::A4:/64​
  

A client is using SLAAC to obtain an IPv6 address for its interface. After an address has been generated and applied to the interface, what must the client do before it can begin to use this IPv6 address?

• • It must send an ICMPv6 Router Solicitation message to determine what default gateway it should use.

  
  

• • It must send a DHCPv6 INFORMATION-REQUEST message to request the address of the DNS server.

  
  

• • It must send a DHCPv6 REQUEST message to the DHCPv6 server to request permission to use this address.

  
  

• It must send an ICMPv6 Neighbor Solicitation message to ensure that the address is not already in use on the network.
  

Which range of link-local addresses can be assigned to an IPv6-enabled interface?​

• • FE80::/10

  
  

• • FDEE::/7​

  
  

• • cc00::/8​

  
  

• FEC0::/10​
  

What mechanism is used by a router to prevent a received IPv4 packet from traveling endlessly on a network?

• 
  

• • It checks the value of the TTL field and if it is 100, it discards the packet and sends a Destination Unreachable message to the source host.

  
  

• • It increments the value of the TTL field by 1 and if the result is 100, it discards the packet and sends a Parameter Problem message to the source host.

  
  

• • It checks the value of the TTL field and if it is 0, it discards the packet and sends a Destination Unreachable message to the source host.

  
  

• 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.
  

A network administrator is designing the layout of a new wireless network. Which three areas of concern should be accounted for when building a wireless network? (Choose three.)

• 
  

• • security

• • interference

• • coverage area

  
  

• • packet collision

  
  

• extensive cabling
  

Refer to the exhibit. What is wrong with the displayed termination?

• • The untwisted length of each wire is too long.

  
  

• • The woven copper braid should not have been removed.

  
  

• • The wrong type of connector is being used.

  
  

• The wires are too thick for the connector that is used.
  

A network administrator notices that some newly installed Ethernet cabling is carrying corrupt and distorted data signals. The new cabling was installed in the ceiling close to fluorescent lights and electrical equipment. Which two factors may interfere with the copper cabling and result in signal distortion and data corruption? (Choose two.)

• 
  

• • EMI

• • signal attenuation

  
  

• • crosstalk

• • RFI​

  
  

• extended length of cabling