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CCIE R&S - IP Svcs
CCIE R&S - Written - Internet Protocol
| Question | Answer |
|---|---|
| Default HSRP Priority? | 100 |
| HSRP Hello Timer? | 3 seconds |
| HSRP Dead Timer? | 10 seconds |
| How is the HSRP Active router selected? | Highest priority |
| What port and type does HSRP use for hellos? | UDP, 1985 |
| How does MHSRP track interfaces? | IOS object tracking or HSRP tracking |
| What is the virtual MAC address of HSRP? | 0000.0C07.ACxx, where xx is the hex group number |
| How to fix HSRP state changes on a multicast stub? | Put an access-list on the non-DR |
| This GLBP router is responsible for responding to ARP requests with virtual MAC address | AVG |
| Which GLBP load-balancing method is the default? | round-robin |
| Which GLBP multicast address is used for hellos? | 224.0.0.102 |
| How often are GLBP hellos sent? | Every 3 seconds |
| Which port and type does GLBP use? | UDP, 3222 |
| What GLBP router is only responsible for forwarding packets? | AVF |
| What is the virtual MAC address of GLBP? | 0007.B400.xxyy where xx is the GLP group number and yy is the GLP router number |
| How many GLP routers can there be in one group? | 4 |
| How many different GLBP groups can be on one interface? | 1024 |
| How is the Virtual IP address of VRRP different from HSRP? | The Virtual IP of the Virtual Router Group is the same as the physical IP of the Virtual Route Master |
| What is the virtual MAC address of VRRP? | 0000.5e00.01xx, where xx is the hex group number |
| How does VRRP track interfaces? | Cisco IOS object tracking |
| Which load balancing protocol has pre-emption enabled by default? | VRRP |
| This NAT address is assigned to a host inside the network | Inside Local |
| This NAT address is a non-private address that represents the inside host | Inside Global |
| This NAT address is the IP address of an outside host as it appears in the inside network | Outside Local |
| This NAT address is the IP address assigned to a host on the outside network | Outside Global |
| Which NAT keyword specifies Port Address Translation (PAT) | overload |
| What is the command to configure a router in NTP client mode? | ntp server X.X.X.X |
| Command to update battery powered hardware clock? | ntp update-calendar |
| Command to configure router as NTP server | ntp master [stratum] |
| What is the default NTP stratum? | 8 |
| What does NTP stratum 1 indicate? | That the router itself is the time source |
| What NTP command is used to enable Symmetric Active Mode? | ntp peer X.X.X.X |
| What NTP interface command is used to turn on broadcasts? | ntp broadcast version 2 |
| Describe the DHCP 4-way handshake process | Host broadcasts discover, server unicasts OFFER, client unicasts REQUEST, server unicasts ACKNOWLEDGEMENT |
| What are the 3 mandatory steps to configure a DHCP server? | Excluded Address, DHCP pool, and Network Address |
| What are the two ways to create DHCP reserved addresses? | With the host command inside the pool or with the origin file command |
| What is the default version of WCCP? | Version 2 |
| What are the two main limitations of WCCP Version 1? | It can only do port 80 redirects, and can only have 1 router per Content Engine Cluster |
| How many routers and Content Engines does WCCP Version 2 support? | 32 routers and 32 Content Engines |
| If Multicast is used for WCCP communication, what are the two prerequisites? | All Content Engines in the cluster must be able to communicate with all routers and the routers have to have a TTL of 15 or less |
| What are the two ways to redirect traffic in WCCP and when are they used? | GRE (if router and content engine not on same subnet) or direct Layer2 if they are |
| How does WCCP handle L2 redirection? | By rewriting the MAC address |
| Which WCCP interface command specifies what traffic to redirect? | ip wccp web-cache redirect in (on requester facing interface) or ip wccp web-cache redirect out (on internet facing interface) |
| Command to globally enable WCCP? | ip wccp web-cache |
| Command to limit WCCP Content Engines permitted to participate? Global or interface command? | ip wccp web-cache group-list N (global) |
| Command to limit WCCP requesters? (global or interface) | ip wccp web-cache redirect list N (interface) |
| What protocol and port does WCCP use? | UDP 2048 |
| How is the lead engine elected in WCCP? | Lowest IP address |
| What type of security does WCCP use? | MD5 |
| Which IP version does WCCP support? | IPv4 only |
| What does the command 'no logging on' do? | Forces messages to the console |
| What protocol and port does Syslog use? | UDP 514 |
| How to create custom syslog event? | event tag WORD |
| How to specify timeframe for event in Embedded Event Manager? | trigger |
| How to associate different events into one group in Embedded Event Manager? | correlate |
| How to specify router response if trigger is activated? | action |
| What three ways can IP SLA information be accessed? | CLI, SNMP, and Syslog |
| Name the 10 normal IP SLA operation types. | UDP Jitter, ICMP Path Jitter, UDP Jitter for VoIP, UDP Echo, ICMP Echo, ICMP path Echo, HTTP, TCP Connect, FTP, DHCP |
| Name the 2 legacy IP SLA operation types. | DLSW+ and Frame Relay |
| What is the most commonly used IP SLA operation type? | UDP Jitter |
| This IP SLA operation type measures RT delay, OW delay, OW jitter, OW packet loss, and connectivity. | UDP Jitter |
| This IP SLA operation type measures hop by hop jitter, packet loss, and delay. | ICMP Path Jitter |
| This IP SLA operation type measures RT delay, OW delay, OW jitter, OW packet loss. | UDP Jitter for VoIP |
| This IP SLA operation type simulates various codecs and does voice quality scoring. | UDP Jitter for VoIP |
| This IP SLA operation type measures round trip delay for UDP traffic. | UDP Echo |
| This IP SLA operation type measures round trip delay for the full path. | ICMP Echo |
| This IP SLA operation type measures round trip delay and hop by hop round trip delay. | ICMP Path Echo |
| This IP SLA operation type measures round trip time for web page traffic. | HTTP |
| This IP SLA operation type measures the time to establish a session with a target. | TCP Connect |
| This IP SLA operation type measures the round trip time for file transfers. | FTP |
| This IP SLA operation type measures the round trip time for address acquisition. | DHCP |
| This IP SLA operation type measures the peer tunnel response time. | DLSW+ |
| This IP SLA operation type measures circuit availability, RT delay, and the frame delivery ratio. | Frame Relay |
| This IP SLA destination system runs on a Cisco router | IP SLA Responder |
| What is the benefit of using an IP SLA Responder? | Eliminates processing delays on the source and the target |
| What protocol is used for IP SLA Responder? | IP SLA Control Protocol |
| IP SLA is a key ingredient in what Cisco feature? | OER / PfR |
| How are IP SLA monitors modified? | They can't be, must delete and recreate |
| How does an RARP client construct a broadcast frame requesting its own IP? | ARP message with its own MAC as the target, destination IP address of 0.0.0.0 |
| What restriction does a RARP server have in relation to client reachability? | Must be on same subnet |
| If a RARP server finds the client's IP address, how does the server construct the reply frame? | Puts client's IP address in the Source IP address field |
| Describe a BOOTP message | It is encapsulated inside an IP and UDP header |
| How does a router change a clients DHCP request? | It changes it from a broadcast to a unicast, lists it's own IP address in the gateway field |
| How does a router change a server's DHCP response? | It changes to destination IP to a LAN broadcast |
| What DHCP feature must be inversely enabled or disabled with conflict logging? | database agent |
| What two improvements did SNMPv2 make on SNMPv1? | Removed requirement for communities, Added GetBulk and Inform Messages |
| What is the difference between SNMPv2 and SNMPv2c | v2c allows SNMPv1 style communities |
| What improvement did SNMPv3 make? | Better security with MD5 and SHA hashes, DES encryption |
| What protocol is used for SNMP transport? | UDP 161 and 162 |
| Which SNMP messages do not expect acknowledgment? | Trap and Response |
| What are Inform SNMP messages used for? | Allows two different SNMP managers to share MIB information about mutual agents |
| What is used to capture, calculate, monitor, and report information for SNMP? | RMON MIB |
| What are the configuration steps for NetFlow? | Configure NetFlow monitor, Apply it to an interface, Configure an exporter |
| What is Router IP Traffic Export (RITE) | Exports packets to a VLAN or LAN interface for analysis, only for traffic received on multiple interfaces simultaneously |
| What is the name of the event-notification extension of SNMP? | RMON |
| What are the two RMON classes? | Alarms and Events |
| What two responses does a RMON alarm have? | Log or send trap |
| What are the two types of user configurable thresholds for RMON numbered events? | relative (delta) or absolute |
| What is required for Secure Copy Protocol (SCP)? | AAA |
| What are Rotary Groups used for? | Allow VTY access on ports other than default |
| What are the 5 values represented by the cron-entry command (from left to right)? | minute, hour, day of month, month, day of week |
| When does the NAT inside-to-outside translation occur in the order of operations? | After routing, before crypto |
| When does the NAT outside-to-inside translation occur in the order of operations? | After web-cache, before policy routing |
Created by:
ajballer15
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