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Which of the following best describes Anycast in computer networks?
a. Multiple hosts share the same IP and the network routes to the nearest one
b. Multiple hosts with different IPs and always broadcasts
c. Single host with unique route
d. Packets delivered to all devices simultaneously
Answer: a
Source:guvi+1
Anycast is mainly used to improve which aspect of networking services?
a. Latency and redundancy
b. Encryption and compression
c. Backbone throughput
d. Local DNS caching only
Answer: a
Source:catchpoint+1
In what protocol is Anycast addressing natively supported?
a. IPv6
b. IPv4
c. Ethernet
d. ARP
Answer: a
Source:itexamanswers+1
Typically, which network protocol is used to steer Anycast traffic to the closest server?
a. Border Gateway Protocol (BGP)
b. Shortest Path Bridging (SPB)
c. Simple Mail Transfer Protocol (SMTP)
d. Spanning Tree Protocol (STP)
Answer: a
Source:noction+1
Anycast most benefits which types of applications?
a. Stateless services such as DNS and NTP
b. Stateful streaming
c. Peer-to-peer file sharing
d. Legacy LAN chat apps
Answer: a
Source:nvidia+1
How does Anycast contribute to DDoS mitigation?
a. By distributing traffic to multiple locations, diluting attack impact
b. By encrypting all data
c. By blocking traffic at Layer 2
d. By compressing bandwidth
Answer: a
Source:guvi+1
In Anycast, what happens when a server fails?
a. Traffic is redirected to the next nearest healthy instance
b. All connections are dropped permanently
c. Data is retransmitted until success
d. The subnet is disabled
Answer: a
Source:geeksforgeeks+1
Which type of IP address is shared by multiple hosts in Anycast?
a. Same IP address
b. Unique per host
c. Loopback only
d. Class D only
Answer: a
Source:catchpoint+1
What is a key difference between Anycast and Multicast?
a. Anycast routes to one, Multicast to many
b. Both send to all nodes
c. Only Multicast uses IP
d. Both are IPv6 exclusive
Answer: a
Source:reddit+2
Why are stateful applications typically not recommended for Anycast?
a. Sessions can be split across different servers, breaking connections
b. Data cannot be encrypted
c. Anycast lacks ARP support
d. Multicast is faster
Answer: a
Source:nvidia+1
Which service is a popular use case for Anycast in global networking?
a. DNS (Domain Name System)
b. SMTP for email
c. FTP file upload
d. POP3 mail retrieval
Answer: a
Source:guvi+1
What is an important requirement for deploying Anycast in production?
a. Servers must be geographically distributed
b. Servers must be on the same LAN
c. ARP tables should be static
d. IGMP snooping must be disabled
Answer: a
Source:catchpoint+1
How does Anycast maintain service availability?
a. Failing nodes withdraw the route, so traffic is re-routed
b. By duplicating all data
c. By using Layer 2 bridging
d. By NAT load balancing
Answer: a
Source:noction+1
What is one primary routing behavior of Anycast?
a. Directs traffic to the node with the shortest network path
b. Directs traffic randomly
c. Always selects the server with the highest IP
d. Cycles through servers in round-robin
Answer: a
Source:noction+1
In Anycast, which network protocol handles announcing the IP prefixes?
a. BGP (Border Gateway Protocol)
b. OSPF
c. HTTP
d. RIP
Answer: a
Source:guvi+1
What is a potential drawback of using Anycast for TCP-based applications?
a. Session persistence is difficult
b. Increased encryption overhead
c. Unicast is unsupported
d. No DNS resolution
Answer: a
Source:nvidia+1
Which of these is not a benefit of Anycast?
a. Single IP management for multiple servers
b. Efficient routing
c. Guaranteed session stickiness
d. Fault tolerance
Answer: c
Source:nvidia+1
With Anycast, which criteria does a router typically use to select a server?
a. Shortest topological distance
b. Alphabetical hostname
c. Smallest MAC address
d. Largest subnet mask
Answer: a
Source:noction+1
Why is Anycast suitable for DNS root server deployment?
a. It routes queries to the closest root server instance
b. It always uses IPv4 exclusively
c. Each query is sent to all servers
d. DNS does not need redundancy
Answer: a
Source:catchpoint+1
In IPv6, which transmission types are defined?
a. Unicast, Multicast, Anycast
b. Unicast, Broadcast, Unicurse
c. Linkcast, Hostcast, Anycast
d. Allcast, Netcast, Multicast
Answer: a
Source:testbook+1
What happens if two Anycast nodes advertise the same prefix?
a. Traffic is distributed according to routing metrics
b. Only the first one is active
c. Packets are duplicated
d. Nothing changes
Answer: a
Source:guvi+1
Which label matches the main feature of Anycast?
a. Traffic ends up at one chosen destination among many potential receivers
b. All recipients get the traffic
c. Multiple senders, one receiver
d. Broadcast to all nodes in subnet
Answer: a
Source:geeksforgeeks+1
What must be consistent on all Anycast nodes?
a. The IP address being advertised
b. The MAC address
c. The internal server OS
d. The power supply specs
Answer: a
Source:catchpoint+1
In which networking scenario does Anycast NOT provide benefits?
a. Video streaming requiring session continuity
b. Distributed DNS server network
c. Geo-redundant load balanced NTP
d. CDN POPs for static file delivery
Answer: a
Source:nvidia+1
What mainly determines how long data stays on Anycast routes?
a. Routing protocol convergence and route advertisement
b. Packet fragmentation
c. Server interface bandwidth
d. Application buffer size
Answer: a
Source:noction+1
Which of the following is a potential risk with Anycast?
a. Session flipping during route changes
b. Control plane partitioning
c. Switch layer isolation
d. IGMP join latency
Answer: a
Source:nvidia+1
To ensure minimal user-impact with Anycast, applications should be:
a. Stateless or have robust session management
b. Highly bandwidth intensive
c. Only local IPv4
d. Isolated on VLANs
Answer: a
Source:guvi+1
What action does a router take when multiple Anycast paths have the same metric?
a. May use ECMP (Equal Cost Multi Path)
b. Drops all packets
c. Deletes ARP entries
d. Switches to lowest IP
Answer: a
Source:noction+1
In practical implementation, what does ‘nearest’ mean in Anycast?
a. Nearest in terms of routing metrics (hops, latency)
b. Physically closest
c. With the smallest rack unit
d. Largest storage capacity
Answer: a
Source:guvi+1
Which DNS record is often served using Anycast?
a. A and AAAA records for root and popular TLD servers
b. SPF only
c. MX only
d. PTR only
Answer: a
Source:catchpoint+1
What enables global DNS providers to claim high availability?
a. Use of Anycast routing for their resolver nodes
b. Only IPv6 support
c. UDP flooding
d. Tunneling BGP
Answer: a
Source:catchpoint+1
With Anycast, where is the BGP announcement made for the shared prefix?
a. At every PoP (Point of Presence) hosting the Anycast node
b. Only at headquarters
c. At the root switch
d. On the first hop router
Answer: a
Source:noction+1
Which factor can cause Anycast traffic to shift from one node to another?
a. Changes in BGP path attributes
b. Application data format
c. File system corruption
d. Only DNS cache expiration
Answer: a
Source:guvi+1
What aspect of Anycast helps lower response times for end users?
a. Requests route to the geographically or topologically closest server
b. All servers respond at once
c. Encryption at every hop
d. Fragmented responses
Answer: a
Source:catchpoint+1
Which of these is NOT required for Anycast deployment?
a. Same IP advertised via BGP at multiple locations
b. Identical content available at each node
c. Synchronization of session state always
d. Multiple geographically dispersed PoPs
Answer: c
Source:nvidia+1
Anycast can assist content providers in:
a. Distributing static files quickly to global audiences
b. Encrypting all unicast traffic
c. Running spanning tree across the internet
d. MAC address preservation
Answer: a
Source:guvi+1
Which is the recommended protocol suite for global Anycast routing?
a. BGP over IP
b. STP with IPX
c. LLDP over MAC in LAN
d. HTTP tunneling over ARP
Answer: a
Source:noction+1
Anycast address can be used safely for which traffic?
a. Short-lived or stateless TCP/UDP sessions
b. Persistent, long-lived streaming only
c. Legacy rlogin only
d. Loopback routing
Answer: a
Source:nvidia+1
Why does Anycast require careful application design for TCP?
a. Because TCP is connection-oriented and may not survive path changes
b. It increases ARP traffic
c. Causes bandwidth collapse
d. Always disables NAT
Answer: a
Source:nvidia+1
Which type of route withdrawal can remove a failing node from the Anycast set?
a. BGP prefix withdrawal
b. VLAN trunk pruning
c. OSPF LSA flooding
d. IGMP query timeout
Answer: a
Source:noction+1
What can cause suboptimal routing in Anycast systems?
a. Incorrect BGP path advertisement
b. VLAN segmentation
c. Physical cable length
d. Hostname resolution lag
Answer: a
Source:guvi+1
Anycast offers a solution for network services that require:
a. Fast failover and distribution without per-client tracking
b. Guaranteed session lock to a host
c. Token ring isolation
d. Only Layer 2 paths
Answer: a
Source:nvidia+1
A DNS Anycast resolver advertises:
a. The same IP address from all locations
b. A set of unique addresses per node
c. MAC broadcasts for each region
d. Only via static routes
Answer: a
Source:catchpoint+1
Anycast is most helpful in defending against which attack type?
a. Distributed Denial of Service (DDoS)
b. ARP spoofing
c. MAC flooding
d. BGP hijacking
Answer: a
Source:catchpoint+1
What largely determines Anycast traffic distribution among nodes?
a. Internet routing topology at the time
b. Local application settings
c. MAC address byte order
d. Only the DNS records
Answer: a
Source:noction+1
Which technology does Anycast typically leverage for distribution?
a. Border Gateway Protocol (BGP)
b. Address Resolution Protocol (ARP)
c. Lightweight Directory Access Protocol (LDAP)
d. Dynamic Host Configuration Protocol (DHCP)
Answer: a
Source:guvi+1
When a client in Paris queries a global DNS Anycast server, which node is selected?
a. The geographically or topologically closest working instance
b. The one in the client’s ASN
c. Whichever responds slowest
d. The last node added
Answer: a
Source:catchpoint+1
What does ‘stateless’ mean in the context of Anycast application suitability?
a. The server does not require session persistence
b. It does not support routing
c. It copies all state to disk every second
d. It has no firewall
Answer: a
Source:nvidia+1
Anycast is fundamentally a technique of:
a. Network addressing and routing
b. Application programming
c. Physical cabling
d. Datacenter insulation
Answer: a
Source:geeksforgeeks+1
Which is NOT a valid Anycast best practice?
a. Use for long-lived stateful TCP services requiring sticky sessions
b. Monitor node health and promptly withdraw failed prefixes
c. Deploy at multiple geographic points
d. Use BGP-aware nodes for IP announcements
Answer: a
Source:nvidia+1

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