H12-261 : HCIE-R&S (Written) (Huawei Certified Internetwork Expert-Routing & Switching) : Part 03
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What is the class D IP address range 239.0.0.0-239.255.255.255 used for?
- It is a multicast address range used by routing protocols
- Any legal multicast data flow and multicast application can use this address segment
- Link-local multicast traffic mode up of network control messages meant to stay in the local subnet
- It is a locally scoped multicast address and should only be used on local segments
- It is an SSM multicast address range which is used on the entire network.
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Source Specific Multicast (SSM)is being used throughput the HW IP Multicast network. Which of the following three statements about SSM are true? (Choose three.)
- SSM uses Shortest-Path Trees Only
- There are no RPs to worry about
- SSM is best suited for applications that are of the Many-to-Many category
- SSM uses shared Trees only
- The use of SSM is recommended when there are many sources and it is desirable to keep the amount of mroute state in the routers in the network to a minimum.
- SSM is best suited for applications that are of one-to-many category
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The default SSM group address range is 232.0.0.0/8. Which of the following configurations can be performed to modify the SSM group address range?
- Run the ssm-policy advanced-acl-number command in the system view to configure the SSM group address range
- Run the ssm-policy basic-acl-number command in the system view to configure the SSM group address range
- Run the ssm-policy advanced-acl-number command in the PIM view to configure the SSM group address range
- Run the ssm-policy basic-acl-number command in the PIM view to configure the SSM group address range
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Which Multicast Protocols use Reverse Path Forwarding (RPF) information when sending multicast traffic streams towards receivers within HW routers?
- PIM Dense Mode
- DVMRP
- Multicast OSPF
- PIM Sparse Mode
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Routers HW1 and HW2 are IP Multicast routers. These routers use (S, G) entries for multicast packet forwarding. Which of the following address types are used in the “S” entry?
- The block of administratively scoped multicast addresses
- Source Specific multicast addresses
- SDP/SAP addresses
- Any class A, Class B, or Class C host address
- GLOP addresses
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Which of the following are differences between PIM-SM and PIM-DM?
- PIM-SM has RPTs and SPTs but PIM-DM has only RPTs
- BSRs/RPs exist only on a PIM-SM network, not on a PIM-DM network
- PIM-SM is applicable to a network with few receivers; PIM-DM is applicable to a network with a larger number of receivers
- Whether in PIM-SM or PIM-DM mode, receiver hosts must join multicast groups through IGMP
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A (*,G) multicast entry is associated with which multicast type of feature within the HW IP multicast network?
- Shared tree
- Dense Mode
- Source tree
- Sparse Mode
- Dense Tree
- PIM bidirectional
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The HW network consists of Network A and B that are connected via Router HW1 and Router HW2. The HW network is shown in the following exhibit. To set up an IPSec VPN between routers HW1 and HW2, which of the following crypto access-lists must be configured on Router HW1 in order to send LAN to LAN traffic across the encrypted VPN tunnel?
H12-261 HCIE-R&S (Written) (Huawei Certified Internetwork Expert-Routing & Switching) Part 03 Q08 005 - rule permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
- rule permit ip source 10.1.1.0 0.0.0.255 destination 192.168.1.2 0
- rule permit ip source 198.168.1.1 0 destination 192.168.1.2 0
- rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
- rule permit ip source 192.168.1.1 0 destination 10.1.2.0 0.0.0.255
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To configure AAA, you need to define a RADIUS server. The RADIUS server is configured as follows:
[Huawei]radius-server template EXAM
[Huawei-radius-EXAM] radius-server shared-key cipher HUAwei123
[Huawei-radius-EXAM] radius-server authentication 10.7.66.66 1812
[Huawei-radius-EXAM] radius-server authorization 10.7.66.66 1812
[Huawei-radius-EXAM] radius-server accounting 10.7.66.66 1813
[Huawei-radius-EXAM] radius-server retransmit 2
- FALSE
- TRUE
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Which of the following lists, in the correct order, the protocols that use TCP ports 443, 179, 137, 110, and 23?
- HTTPS, BGP, NetBios Name Server, POP3, Telnet
- Finger, DHCP Server, NetBios Name Server, POP3, Telnet
- BGP, POP3, SNMP, TFTP, Telnet
- LDAP, SNMP, TFTP, POP3, Telnet
- HTTPS, SNMP, POP3, DNS, Telnet
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Switches use IPSG to verify the source address of IP packets. IPSG obtains the binding table by listening to the address resolution process.
- TRUE
- FALSE
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Which of the following statements are false about Weighted Round Robin (WRR)?
- WRR is a congestion management technology
- WRR prevents congestion on the network
- WRR ensures important traffic being forwarded first
- WRR ensures that all queues being serviced
- WRR cannot be used on gigabit-ethernet interfaces
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Which of the following are functions of Random Early Discard (RED)?
- Avoiding global synchronization for TCP traffic
- Performs rate limiting on the specified data traffic
- Ensuring that high priority traffic gets sent first
- Preventing starvation in lower priority queues
- Minimizing packet delay jitter
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Which of the following statements is false about the DSCP field?
- When the DSCP value is EF, data is forwarded in expedited forwarding mode
- CS in DSCP classifies data based on eight priorities
- DSCP can represent the data priority as well as the packet drop probability
- The DSCP value can be 0. When the value is 0, the default packet forwarding mechanism is used
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You must ensure that mission critical traffic is prioritized in the HW network. The IP precedence of a packet can be determined by which of the following?
- The three most significant bits of the ToS byte
- All 8 bits of the ToS byte
- The three least significant bits of the ToS byte
- Bit 4, 5, and 6 of the ToS byte
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To improve delay and jitter on frame relay links, we can fragment and assemble the frame between multiple PVCs. This is similar to what happens with PPP multilink.
- FALSE
- TRUE
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Which of the following statements are true?
- SNMPv2c has privacy and uses usernames for authentication
- SNMPv3 has privacy and uses community for authentication
- SNMPv3 has privacy and uses usernames for authentication
- SNMPv1 has no privacy and uses community for authentication
- SNMPv2c has privacy and uses usernames for authentication
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A new Syslog server is being installed in the HW network to accept network management information. What characteristics apply to these Syslog messages?
- Its transmission is acknowledgment
- Its transmission is secure
- Its transmission is not secure
- Its transmission is not reliable
- Its transmission is not acknowledged
- Its transmission is reliable
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Which of the following statements about VRRP load balancing are false?
- When configuring priorities, you must ensure that the same router server as the master router in three VRRP backup groups
- To implement load balancing, default network gateways of hosts on a LAN must be configured as IP addresses of different virtual routers
- Multiple VRRP backup groups can be created on an interface of a router. The router can serve as the master router in on VRRP backup group and the backup router in other VRRP backup groups.
- VRRP local balancing requires that at least two virtual routers transmit services at the same time.
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On a BGP/MPLS Ipv4 VPN, OSPF, LDP, and static routes are configured. Which of the following protocols must be enabled with GR to achieve NSF on PEs?
- Static routes
- MPLS LDP
- OSPF
- BGP
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