Interconnecting Cisco Network Devices
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TheTroytec A router is configured as shown
below:Troytec A(config)# interface loopback 0
Troytec A(config-if)# ip address 192.168.16.24 255.255.255.255
As a result of this change, which of the statements below are true? (Select all valid responses)
A. It creates a virtual, software only, interface.
B. It provides a way to test the convergence of OSPF routing updates.
C. The mask of 255.255.255.255 is called a host mask.
D. It uses a wildcard mask of 255.255.255.255.
E. It ensures that an interface is always active for OSPF processes.
F. Loopback interfaces must be numbered 0.
Answer: A, C, E
When the OSPF process starts, the Cisco IOS uses the highest local IP addresses its
OSPF router ID. If a loopback interface is configured, that address is used regardless of its value.
A loopback interface is a logical, software interface that is always up.
A 32-bit mask is sometimes called a host mask, because it specifies a single host and not a network or
B. The addition of a loopback interface will in no way test the convergence speed of any OSPF process.
D. A wildcard mask of value 255.255.255.255 will not check any of the bit values in the IP address.
F. A loopback interface can be any number from 1-255.
Which IEEE standards apply when a company wants to implement 1000mbps Ethernet? (Select two
Answer: C, E
The IEEE 802.3z standard describes 1000BASE-SX.
The 1000BaseT standard was released in June 1999, defined by IEEE 802.3ab.
A. This describ