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Refer to the exhibit. PC2 is directly connected to R1. A user at PC2 cannot Telnet to 2001:db8:a:b::10. The user can ping 2001:db8:a:b::10 and receive DHCP-related information from the DHCP server. Which action resolves the issue?
Answer: B
When determining if a system is capable of support, what is the minimum time spacing required for a BFD control packet to receive once a control packet is arrived?
Answer: C
C is ok Required Min RX Interval : This is the minimum interval, in microseconds, between received BFD Control packets that this system is capable of supporting.
Source: Adapted from community discussion — Stivostine
What is an advantage of implementing BFD?
Answer: C
Refer to the exhibit. A network engineer finds that PC1 is accessing the hotel website to do the booking but fails to make payment. Which action resolves the issue?
Answer: B
Since the Bank routes are in stub area (which blocks type 4 & 5 LSA), it won't be able to receive R3 redistributed static route into OSPF, thus R1 is not able to communicate back to R3. Two options are envisageable: - configure a reverse static route on R1 back to R3 - configure the Bank router area as Regular or NSSA area which allow redistributed routes to come in.
Source: Adapted from community discussion — ellen_AA
Refer to the exhibit. The administrator can see the traps for the failed login attempts, but cannot see the traps of successful login attempts. Which action fixes this issue?
Answer: D
An engineer creates a default static route on a router with a next hop of 10.1.1.1. On inspection, the engineer finds the router has two VRFs, Red and Blue. The next hop is valid for both VRFs and exists in each assigned VRF. Which configuration achieves connectivity?
Answer: A
Refer to the exhibit. Bangkok is using ECMP to reach to the 192.168.5.0/24 network. The administrator must configure Bangkok in such a way that Telnet traffic from 192.168.3.0/24 and 192.168.4.0/24 networks use the Hong Kong router as the preferred route. Which set of configurations accomplishes this task?
Answer: B
"The administrator must configure Bangkok in such a way that Telnet traffic" Only A and B have port 23 (telnet) in ACL. In B the PBR is on the interface pointing 192.168.3.0/24 and 192.168.4.0/24 networks, hence it can policy route the traffic. If it was placed on other interface it may not policy route all of the traffic coming from 192.168.3.0/24 and 192.168.4.0/24 networks.
Source: Adapted from community discussion — bk989
Refer to the exhibit. An engineer configured route exchange between two different companies for a migration project. EIGRP routes were learned in router C, but no OSPF routes were learned in router A. Which configuration allows router A to receive OSPF routes?
Answer: D
Engineer redistribute external 1 external 2, which don't exist by looking into the exhibit. Answer is D, because it uses the default behavior of redistribution of OSPF routes into EIGRP. Only intra-area 'O' and inter-area '0 IA' are redistributed using this command!
Source: Adapted from community discussion — ellen_AA
Refer to the exhibit. An engineer must filter incoming EIGRP updates to allow only a set of specific prefixes. The distribute list is tested, and it filters out all routes except network 10.10.10.0/24. How should the engineer temporarily allow all prefixes to be learned by the router again without adjusting the existing access list?
Answer: B
Requirement: temporarily allow all routes without modifying the ACCESS-LIST D. is wrong, this specifies directly modifying access list A. is wrong, there is no such command as "permit any" on a route-map C. is wrong, the continue statement under route-map, as I understand it, means that it should continue to process the route-map entry for the next statement in it. B. is correct, we need to override the implicit deny at the end of a route-map list with a statement that permits all routes. This will allow the engineer to modify the ACL without causing a longer outage.
Source: Adapted from community discussion — [Removed]
What is a function of the IPv6 DHCP Guard feature for DHCP messages?
Answer: B
DHCPv6 Guard Overview The DHCPv6 Guard feature blocks reply and advertisement messages that come from unauthorized DHCP servers and relay agents. Packets are classified into one of the three DHCP type messages. All client messages are always switched regardless of device role. DHCP server messages are only processed further if the device role is set to server. Further processing of server messages includes DHCP server advertisements(for source validation and server preference) and DHCP server replies (for permitted prefixes). If the device is configured as a DHCP server, all the messages need to be switched, regardless of the device role configuration. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_dhcp/configuration/15-sy/dhcp-15-sy-book/ip6-dhcpv6-guard.pdf
Source: Adapted from community discussion — DUBC89x
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