Which of the following TCP port numbers is used by Simple Mail Transfer Protocol (SMTP)?

Which VLAN can NOT be filtered through the VLAN Trunking Protocol (VTP) Pruning feature of Cisco
switches?

Which command is used on a Catalyst 2950 series switch to enable basic port security on the interface?

Host A is configured for DHCP, but it is not receiving an IP address when it powers up.
What is the most likely cause? (Click the Exhibit(s) button to view the network diagram.)

Which Internet Control Message Protocol (ICMP) message is sent by a host in the network to test connectivity
with another host?

Which two features do Cisco routers offer to mitigate distributed denial-of-service (DDoS) attacks? (Choose
two.)

You are working with an Internet Service Provider (ISP) as network manager. A corporate client approaches
you to lease a public IP subnet that can accommodate 250 users. You have assigned him the 192.25.27.0
subnet.What subnet mask should be assigned to this IP address so that it can accommodate the number of users
required by the corporate client?

Which is the valid IP address range that can be assigned to hosts on the subnet that includes the address
172.16.4.6/23?

In which of the following IPv6 address assignment methods will the interface receive its IPv6 address from a
process native to IPv6, and receive additional parameters from DHCP?

Your assistant has been assigned the task of configuring one end of a WAN link between two offices. The link
is a serial connection and the router on the other end is a non-Cisco router. The router in the other office has an
IP address of 192.168.8.6/24. The connection will not come up, so you ask your assistant to show you the
commands he configured on the Cisco router. The commands he executed are shown below.
Ciscorouter(config)# interface serial0/0
Ciscorouter(config-if)# ip address 192.168.8.5 255.255.255.0
Ciscorouter(config-if)# no shut
What command(s) should he run to correct the configuration?