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Which three IPv4 addresses represent valid network addresses for a subnet? (Choose three.)
(ccna4u.org)=>192.168.9.64/28
192.168.9.146/28
(ccna4u.org)=>192.168.9.96/28
192.168.9.129/26
192.168.9.51/26
(ccna4u.org)=>192.168.9.64/26
3

Refer to the exhibit. Which two facts can be determined about the topology? (Choose two.)
(ccna4u.org)=>Four collision domains are present.

One logical network is represented.
(ccna4u.org)=>Two broadcast domains are present.
Three networks are needed.
Three logical address ranges are required.
4

Refer to the exhibit. Which logical topology describes the exhibited network?
star
(ccna4u.org)=>ring
point-to-point
multi-access
5

Refer to the exhibit. At which OSI layer is serial interface 0/0/1 experiencing problems?
(ccna4u.org)=>Layer 1
Layer 2
Layer 3
Layer 4
6

Refer to the exhibit. Which two statements describe the information that is represented in the header? (Choose two.)
This is a server response.
The UDP protocol is being used.
(ccna4u.org)=>The destination port indicates a Telnet session.
(ccna4u.org)=>The return segment will contain a source port of 23.
The next session originated from the client of this session will use the source port number 13358.
www.ccna4u.info
7

Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switch?
The table will remain unaffected.
(ccna4u.org)=>The switch will remove the MAC address at Fa0/19.
The switch will retain the MAC address until host B is powered on again.
The switch will rebuild the MAC table by assigning the FFFF.FFFF.FFFF address to port Fa0/19.
8
What information is contained in the header of Layer 3 to help data delivery?
(ccna4u.org)=>port number
device physical address
destination host logical address
virtual connection identifier
9

Refer to the exhibit. On the basis of the provided configuration, which statement is true?
(ccna4u.org)=>The IP address of host A is properly assigned to the local NIC.
Host A can send packets to any host on the local network only.
Host A can send packets to any host on the local and remote network.
Host A can ping successfully the default gateway address of 192.168.1.1.
10
As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?
255.255.0.0
255.255.248.0
255.255.252.0
(ccna4u.org)=>255.255.254.0
255.255.255.0
255.255.255.128
www.ccna4u.info
11

Refer to the exhibit. The network administrator remotely accesses the CLI of RouterB from PC1 using a secure connection. Which statement is true about this connection?
The Telnet server process is running on PC1.
Only the exchange of the Telnet username and password is encrypted.
The GET request is sent to RouterA to retrieve data.
(ccna4u.org)=>The SSH service is used to connect PC1 to RouterB.
12
A network administrator wants to restrict access to the router privileged EXEC mode. Which password should the administrator use?
(ccna4u.org)=>enable
aux
console
VTY
13

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