- Home
- Networking
- CCNP Switching 642-813
1.
Which of the following statements is true about the 80/20 rule (Select all that apply)?
- A.20 percent of the traffic on a network segment should be local
- B.no more than 20 percent of the network traffic should be able to move across a backbone.
- C.no more than 80 percent of the network traffic should be able to move across a backbone.
- D.80 percent of the traffic on a network segment should be local
- Answer & Explanation
- Report
Answer : [B, D]
Explanation :
Explanation :
| The 80/20 rule in network design originated from the idea that most of the traffic should remain local to the LAN, since bandwidth is plentiful compared to WAN links, and a great deal of broadcast traffic that is evident at the LAN is not passed over the backbone. Note: With the availability of inexpensive bandwidth and centralized data centers, this rule appears to have become obsolete. In fact, most networks have taken on the 20/80 rules, as opposed to the legacy 80/20 rule. |
2.
The Company LAN switches are being configured to support the use of Dynamic VLANs. Which of
the following are true of dynamic VLAN membership? (Select all that apply)
- A.VLAN membership of a user always remains the same even when he/she is moved to another location.
- B.VLAN membership of a user always changes when he/she is moved to another location.
- C.Membership can be static or dynamic.
- D.Membership can be static only.
- E.None of the other alternatives apply.
- Answer & Explanation
- Report
Answer : [A, C]
Explanation :
Explanation :
| Dynamic VLAN memberships are based on the users MAC address connected to the port. If you have VTP server, a VTP database file, a VTP client switch, and a dynamic port; regardless of where your physical location is, you can still remain in the same VLAN. |
3.
The VLANs in switch R1 are being modified. Which of the following are updated in R1 every time a
VLAN is modified? (Select all that apply)
- A.Configuration revision number
- B.Configuration revision flag field.
- C.Configuration revision reset switch.
- D.Configuration revision database.
- E.None of the other alternatives apply..
- Answer & Explanation
- Report
Answer : [A, D]
Explanation :
Explanation :
| For accountability reasons, every time a VLAN is modified the revision number changes, as does the information in the configuration revision database (as that is where the VLAN information is stored). |
4.
What is a characteristic of assigning a static VLAN membership?
- A.VMPS server lookup is required.
- B.Easy to configure.
- C.Easy of adds, moves, and changes.
- D.Based on MAC address of the connected device.
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
|
Static port VLAN membership on the switch is assigned manually by the administrator on a portby-
port basis. Characteristics of static VLAN configurations include the following: 1. Secure 2. Easy to configure 3. Straight forward to monitor 4. Works well in networks where moves, adds , and changes are rare. |
5.
Two Company switches are connected via a trunk using VTP. Which VTP information does a
Catalyst switch advertise on its trunk ports when using VTP? (Select two)
- A.STP root status
- B.VTP mode.
- C.Negotiation status.
- D.Management domain.
- E.Configuration revision number.
- Answer & Explanation
- Report
Answer : [D, E]
Explanation :
Explanation :
| The role of the VLAN Trunking Protocol (VTP) is to maintain VLAN configuration consistency across the entire network. VTP is a messaging protocol that uses Layer 2 trunk frames to manage the addition, deletion, and renaming of VLANs on a network-wide basis from a centralized switch that is in the VTP server mode. VTP is responsible for synchronizing VLAN information within a VTP domain. This reduces the need to configure the same VLAN information on each switch. Using VTP, each Catalyst Family Switch advertises the following on its trunk ports: Management domain Configuration revision number Known VLANs and their specific parameters. |
|
|
||||||||||||||||||||||||||||
