Which of the following protocols are used to configure trunking on a switch?
VLAN Trunk Protocol
VLAN
802.1Q
ISL
Options
A. 1 only
B. 3 only
C. 3 and 4
D. 1, 3 and 4
Correct Answer
3 and 4
Explanation
Cisco has a proprietary trunking protocol called ISL. The IEEE version is 802.1Q.
More questions
1. What should the configuration register value be after you successfully complete the password recovery procedure and return the router to normal operation?
All Cisco routers have a default configuration register setting of
0x2102, which tells the router to load the IOS from flash memory and the configuration from NVRAM.
2. Which of the following network types have a designated router and a backup designated router assigned?
No DR is assigned on any type of point-to-point link. No DR/BDR is assigned on the NBMA point-to-multipoint due to the hub/spoke topology. DR and BDR are elected on broadcast and non-broadcast multi-access networks. Frame Relay is a non-Broadcast Multi-Access (NBMA) network by default.
3. You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?
Correct Answer: You must use the terminal monitor command.
Explanation:
To see console messages through your Telnet session, you must enter the
terminal monitor command.
4. Using the following illustration, what would be the IP address of E0 if you were using the eighth subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. The zero subnet should not be considered valid for this question.
A /28 is a 255.255.255.240 mask. Let's count to the ninth subnet (we need to find the broadcast address of the eighth subnet, so we need to count to the ninth subnet). Starting at 16 (remember, the question stated that we will not use subnet zero, so we start at 16, not 0), 16, 32, 48, 64, 80, 96, 112, 128, 144. The eighth subnet is 128 and the next subnet is 144, so our broadcast address of the 128 subnet is 143. This makes the host range 129-142. 142 is the last valid host.
5. What are the two main types of access control lists (ACLs)?
Correct Answer: It is used to bypass the configuration in NVRAM.
Explanation:
The default configuration setting is
0x2102, which tells the router to load the IOS from flash and the configuration from NVRAM.
0x2142 tells the router to bypass the configuration in NVRAM so that you can perform password recovery.
7. The configuration register setting of 0x2102 provides what function to a router?
Options
A. Tells the router to boot into ROM monitor mode
B. Provides password recovery
C. Tells the router to look in NVRAM for the boot sequence
If you are on a 2950 switch, then the interface command is just
switchport mode trunk, since the 2950 can only run the IEEE 802.1Q version. However, a 3550 can run both ISL and 802.1Q, so you must use the encapsulation command. The argument to choose 802.1Q for a trunking protocol is
dot1q.