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Q121. Which two statements about IBGP multipath are true? (Choose two.)
A. The IGP metric of the BGP next hop can be different from the best-path IGP metric if you configure the router for unequal-cost IBGP multipath.
B. The IGP metric of the BGP next hop must be the same as the best-path IGP metric.
C. The equivalent next-hop-self is performed on the best path from among the IBGP multipaths before it is forwarded to external peers.
D. The path should be learned from an external neighbor.
E. The router BGP process must learn the path from a confederation-external or external neighbor.
F. The router BGP process must learn the path from an internal neighbor.
Answer: A,F
Q122. Which service is disabled by the no service tcp-small-servers command?
A. the finger service
B. the Telnet service
C. the Maintenance Operation Protocol service
D. the chargen service
Answer: D
Explanation:
The TCP small servers are: . Echo: Echoes back whatever you type through the telnet x.x.x.x echo command.
. Chargen: Generates a stream of ASCII data. Use the telnet x.x.x.x chargen Command.
. DiscarD. Throws away whatever you type. Use the telnet x.x.x.x discard command.
. DaytimE. Returns system date and time, if it is correct. It is correct if you run Network Time Protocol (NTP), or have set the date and time manually from the exec level. Use the telnet x.x.x.x daytime command.
Reference: http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-software-releases-110/12815-23.html
Q123. Which three types of address-family configurations are supported in EIGRP named mode? (Choose three.)
A. address-family ipv4 unicast
B. address-family vpnv4
C. address-family ipv6 unicast
D. address-family ipv6 multicast
E. address-family vpnv6
F. address-family ipv4 multicast
Answer: A,C,F
Q124. Which two hashing algorithms can be used when configuring SNMPv3? (Choose two.)
A. MD5
B. SHA-1
C. Blowfish
D. DES
E. AES
F. SSL
Answer: A,B
Explanation:
Note that SNMPv3 does not send passwords in clear-text and uses hash-based authentication with either MD5 or SHA1 functions (HMAC authentication – the packet conted is hashed along with authentication key to produce the authentication string).
Reference: http://blog.ine.com/2008/07/19/snmpv3-tutorial/
Q125. Which two statements are true about an EVPL? (Choose two.)
A. It has a high degree of transparency.
B. It does not allow for service multiplexing.
C. The EVPL service is also referred to as E-line.
D. It is a point-to-point Ethernet connection between a pair of UNIs.
Answer: C,D
Explanation:
Following the MEF approach, the services that comprise the Metro Ethernet (ME) solution can be classified into the following two general categories:
. Point-to-point (PtP) — A single point-to-point Ethernet circuit provisioned between two User Network Interfaces (UNIs).
. Multipoint-to-multipoint (MPtMP) — A single multipoint-to-multipoint Ethernet circuit provisioned between two or more UNIs. When there are only two UNIs in the circuit, more UNIs can be added to the same Ethernet virtual connection if required, which distinguishes this from the point-to-point type. In the MEF terminology, this maps to the following Ethernet service types:
. Ethernet Line Service Type (E-Line) — Point-to-point Ethernet service
. Ethernet LAN Service Type (E-LAN) — Multipoint-to-multipoint Ethernet service
Reference: http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/HA_Clusters/HA_C lusters/HA_ME3_6.pdf
Q126. Which Layer 2 tunneling technique eliminates the need for pseudowires?
A. OTV
B. L2TPv3
C. AToM
D. VPLS
Answer: A
Q127. Refer to the exhibit. The Main1 and Branch1 switches are connected directly over an MPLS pseudowire, and both run UDLD. After router B1 reloads because of a power failure, the pseudowire is restored. However, the Branch1 switch is unable to reach the Main1 switch.
Which two actions can you take to restore connectivity and prevent the problem from recurring? (Choose two.)
A. Configure a backup pseudowire between the Main1 and Branch1 switches.
B. Enable UDLD recovery on both the Main1 and Branch1 switches.
C. Configure a backup GRE tunnel between the Main1 and Branch1 switches.
D. Enable errdisable recovery on both the Main1 and Branch1 switches.
E. Issue the shutdown and no shutdown commands on both the Branch1 switch’s uplink to the B1 router and the Main1 switch’s uplink to the M1 router.
F. Issue the shutdown and no shutdown commands on the Branch1 switch uplink to the B1 router only.
Answer: D,F
Q128. Refer to the exhibit.
All switches are Cisco switches. Assume that Cisco Discovery Protocol is enabled only on switches A and C.
Which information is returned when you issue the command show cdp neighbors on switch C?
A. a limited amount of information about switch B
B. no neighbor details will be returned
C. neighbor details for switch B
D. neighbor details for switch A
E. neighbor details for switch C
Answer: B
Explanation:
CDP is used to discover information on directly connected neighbors only, so in this case SwitchC would only be able to obtain CDP information from SwitchB. However, since SwitchB is not running CDP then no neighbor information will be seen on SwitchC. Same goes for Switch A also in this topology.
Q129. Which statement about MSS is true?
A. It is negotiated between sender and receiver.
B. It is sent in all TCP packets.
C. It is 20 bytes lower than MTU by default.
D. It is sent in SYN packets.
E. It is 28 bytes lower than MTU by default.
Answer: D
Explanation:
The maximum segment size (MSS) is a parameter of the Options field of the TCP header that specifies the largest amount of data, specified in octets, that a computer or communications device can receive in a single TCP segment. It does not count the TCP header or the IP header. The IP datagram containing a TCP segment may be self-contained within a single packet, or it may be reconstructed from several fragmented pieces; either way, the MSS limit applies to the total amount of data contained in the final, reconstructed TCP segment. The default TCP Maximum Segment Size is 536. Where a host wishes to set the maximum segment size to a value other than the default, the maximum segment size is specified as a TCP option, initially in the TCP SYN packet during the TCP handshake. The value cannot be changed after the connection is established.
Reference: http://en.wikipedia.org/wiki/Maximum_segment_size
Q130. Refer to the exhibit.
Which statement about the output is true?
A. The flow is an HTTPS connection to the router, which is initiated by 144.254.10.206.
B. The flow is an HTTP connection to the router, which is initiated by 144.254.10.206.
C. The flow is an HTTPS connection that is initiated by the router and that goes to 144.254.10.206.
D. The flow is an HTTP connection that is initiated by the router and that goes to 144.254.10.206.
Answer: A
Explanation:
We can see that the connection is initiated by the Source IP address shown as 144.254.10.206. We also see that the destination protocol (DstP) shows 01BB, which is in hex and translates to 443 in decimal. SSL/HTTPS uses port 443.