View Full Citrix 1Y0-342 Exam Dumps and Practice Test Dumps.

Question 221. What is the default GSLB load balancing method?

1. Round Robin
2. Least Bandwidth
3. Least Connections
4. Source IP Hash

Correct Answer: 3. Least Connections

Explanation:

Least Connections is the default GSLB method on NetScaler. It selects the available GSLB service with the fewest active connections. This method generally provides good distribution because a site handling fewer active sessions is considered to have more available capacity. Other GSLB methods include Round Robin, Least Response Time, Least Bandwidth, Least Packets, Source IP Hash, Custom Load, Round Trip Time, and Static Proximity. For remote services, appropriate metric information must be available through MEP or explicit monitors for methods that depend on remote site measurements.

Question 222. What does GSLB Least Bandwidth select?

1. Service using the least traffic
2. Service with most connections
3. Service with highest latency
4. Service with most packets

Correct Answer: 1. Service using the least traffic

Explanation:

The Least Bandwidth GSLB method selects the service currently handling the smallest amount of traffic measured in bandwidth. This can direct new clients toward a site that is consuming less network capacity than other available sites. NetScaler requires appropriate remote metric information when the service is located at another GSLB site. If MEP is disabled and the required remote information is unavailable, Least Bandwidth can fall back to Round Robin. Administrators should therefore make sure the GSLB monitoring and metric exchange design supports the selected load balancing algorithm.

Question 223. What does GSLB Least Packets compare?

1. Active users
2. SSL sessions
3. DNS records
4. Number of packets received

Correct Answer: 4. Number of packets received

Explanation:

Least Packets selects the GSLB service that has received the fewest packets during the documented measurement period. NetScaler uses recent packet activity as an indicator of current service load and directs new requests toward the service with less packet traffic. This method differs from Least Bandwidth, which measures traffic volume, and Least Connections, which examines active connections. When a remote service is involved, metric information must be available through MEP or suitable monitoring. Without required remote metrics, NetScaler can fall back to Round Robin behavior.

Question 224. What does GSLB Source IP Hash use?

1. Destination port
2. Client IP address
3. HTTP URL
4. Server response time

Correct Answer: 2. Client IP address

Explanation:

Source IP Hash uses a hash derived from the client IPv4 or IPv6 address to select a GSLB service. Requests that produce the same hash can therefore be directed consistently toward the same destination service without maintaining a traditional persistence record. Administrators can also apply source address masks when they want clients from the same network range to receive consistent service selection. Hash based methods provide deterministic service selection using information already present in the connection. They differ from measurement based methods such as Least Connections, Least Bandwidth, and Round Trip Time.

Question 225. What does Link Load Balancing distribute?

1. Outbound Internet traffic
2. Authentication requests
3. SSL certificates
4. Cached objects

Correct Answer: 1. Outbound Internet traffic

Explanation:

Link Load Balancing distributes outbound traffic across multiple Internet connections provided by different service providers. NetScaler monitors available links and selects an appropriate path according to the configured load balancing method. This can improve Internet availability because another link can be used if one provider path becomes unavailable. Supported methods include Round Robin, Destination IP Hash, Least Bandwidth, and Least Packets. Optional persistence can keep related traffic on the same link. Link Load Balancing differs from normal server load balancing because its services represent routers or next hop devices rather than application servers.

Question 226. What does an LLB service represent?

1. Web browser
2. Authentication policy
3. Router or next hop
4. Cache object

Correct Answer: 3. Router or next hop

Explanation:

In Link Load Balancing, a service represents an upstream router or next hop toward an Internet service provider. This differs from normal server load balancing, where a service usually represents an application server. NetScaler creates services for the available Internet paths and binds those services to an LLB virtual server. A route then directs outbound traffic through that virtual server, which selects an available router according to the configured method. This design allows NetScaler to monitor and distribute traffic across several provider links while maintaining better Internet availability.

Question 227. Which monitor is bound by default to an LLB service?

1. HTTP
2. PING
3. DNS
4. TCP ECV

Correct Answer: 2. PING

Explanation:

A PING monitor is bound by default to an LLB service. It checks whether the upstream router itself responds to ICMP echo requests. This provides a simple connectivity test between NetScaler and the router. Citrix recommends considering a transparent monitor for more complete path monitoring because a router can remain reachable even when another device farther along the provider path has failed. The default PING monitor is useful for basic setup, but transparent monitoring provides better information about whether the full upstream path can actually deliver traffic toward the configured destination.

Question 228. What does an LLB transparent monitor test?

1. SSL certificate chain
2. Authentication server
3. Cache memory
4. Devices along the upstream path

Correct Answer: 4. Devices along the upstream path

Explanation:

A transparent monitor checks connectivity through the upstream router toward a configured destination instead of checking only the router itself. This allows NetScaler to detect problems with devices farther along the Internet path. If one of those devices becomes unavailable, the LLB service can be marked down and removed from link selection. Without transparent monitoring, the router might still respond to PING even though packets cannot reach the final destination. Citrix therefore recommends transparent monitoring for Link Load Balancing when administrators need stronger confirmation that the complete provider path remains usable.

Question 229. Which persistence type is supported for Link Load Balancing?

1. Cookie Insert
2. SSL Session
3. Destination IP
4. URL Passive

Correct Answer: 3. Destination IP

Explanation:

Destination IP persistence is supported for Link Load Balancing. NetScaler can also use Source IP persistence or a combination of Source IP and Destination IP information. Persistence keeps related connections on a specific provider link instead of allowing each connection to be independently distributed. This can be useful when upstream systems expect traffic for a particular destination or session to continue through the same Internet path. Cookie and SSL based persistence are application oriented methods and are not the documented persistence choices for Link Load Balancing.

Question 230. Which ACL type is evaluated first?

1. Simple ACL
2. Extended ACL
3. Rewrite ACL
4. Responder ACL

Correct Answer: 1. Simple ACL

Explanation:

NetScaler evaluates simple ACLs before extended ACLs. The appliance first determines whether the incoming packet is IPv4 or IPv6 and compares it with the applicable simple ACL rules. If a simple ACL matches, the packet is dropped. Only when no simple ACL matches does NetScaler continue to the extended ACL evaluation. Extended ACLs support more detailed criteria and can allow, drop, or bridge traffic depending on configuration. Understanding the evaluation order is important because a simple ACL can discard traffic before an extended ACL that might otherwise permit it is ever evaluated.

Question 231. What happens when a packet matches a simple ACL?

1. It is redirected
2. It is dropped
3. It is cached
4. It is load balanced

Correct Answer: 2. It is dropped

Explanation:

A packet matching a simple ACL is dropped. Simple ACLs provide basic packet filtering and are evaluated before extended ACLs. They are commonly used when administrators need straightforward blocking based on supported address criteria. If the packet does not match a simple ACL, NetScaler evaluates applicable extended ACL rules. If no ACL matches the packet, the normal default behavior allows it to continue. Because a simple ACL match causes an immediate drop, administrators should make sure these rules are sufficiently specific and do not unintentionally block traffic that should be handled by a later extended ACL.

Question 232. Which action can an extended ACL perform?

1. Issue an SSL certificate
2. Create a service group
3. Configure persistence
4. Allow traffic

Correct Answer: 4. Allow traffic

Explanation:

An extended ACL can explicitly allow traffic. It can also drop or bridge matching packets depending on the configured action. Extended ACLs provide more detailed matching criteria than simple ACLs and can evaluate properties such as source address, source port, destination information, and protocol. NetScaler evaluates simple ACLs first and extended ACLs only if the packet did not match a simple rule. If no extended ACL matches either, the packet is allowed by default. Extended ACLs therefore provide flexible packet filtering and forwarding control at the network level.

Question 233. What is the default state of HTTP Compression?

1. Disabled
2. Enabled globally
3. Enabled for SSL only
4. Enabled for HTTP only

Correct Answer: 1. Disabled

Explanation:

HTTP Compression is disabled by default on NetScaler. Administrators must enable the feature before compression policies and actions can affect application traffic. Compression can be enabled globally or for supported individual services. NetScaler can compress both static and dynamically generated content using GZIP or DEFLATE depending on client capabilities and the configured compression action. Compression reduces the amount of data transmitted to the client and can improve response time, but it also requires processing resources. Administrators should therefore enable and tune it according to application traffic and appliance capacity.

Question 234. Which algorithm does the Compress action prefer when a browser supports both methods?

1. Brotli
2. LZ4
3. GZIP
4. ZIP

Correct Answer: 3. GZIP

Explanation:

The built in Compress action uses GZIP when the client supports GZIP or supports both GZIP and DEFLATE. If the browser supports only DEFLATE, NetScaler uses DEFLATE instead. If the browser supports neither supported compression algorithm, the response is sent without compression. This adaptive behavior allows one compression action to work with different client capabilities. Administrators can also configure dedicated GZIP or DEFLATE actions when a specific algorithm is required. Client support is identified through HTTP request headers that indicate which content encodings the browser can process.

Question 235. Which services support NetScaler HTTP Compression?

1. DNS only
2. RADIUS only
3. FTP only
4. HTTP and SSL

Correct Answer: 4. HTTP and SSL

Explanation:

NetScaler HTTP Compression can be enabled for HTTP and SSL services. The appliance examines the client request to determine which compression formats the browser supports and evaluates the server response against compression policies. If the response matches a policy and the browser supports the configured compression method, NetScaler compresses the response before sending it to the client. Compression can be enabled globally for supported traffic or on specific services. Protocols such as DNS, RADIUS, and FTP do not use this HTTP response compression feature because they do not use the same HTTP content processing model.

Question 236. What happens to responses smaller than the configured minimum compression size?

1. They are dropped
2. They are sent uncompressed
3. They are cached permanently
4. They are redirected

Correct Answer: 2. They are sent uncompressed

Explanation:

Responses smaller than the configured minimum HTTP response size are sent without compression. Compressing very small responses can consume processing resources without providing enough reduction in transmitted data to justify the overhead. NetScaler therefore allows administrators to define the minimum response size that is eligible for compression. Larger qualifying responses can then be compressed according to the selected policy and action. This setting is one of several global compression parameters administrators can tune to balance CPU utilization, network bandwidth savings, and application response performance.

Question 237. Which cache eviction method is used by default when the cache is full?

1. First In First Out
2. Random
3. Least Recently Used
4. Largest Object First

Correct Answer: 3. Least Recently Used

Explanation:

When the Integrated Cache becomes full, NetScaler replaces the least recently used response first by default. This eviction policy removes objects that have not been requested recently and preserves more frequently accessed content. Administrators can configure cache behavior and content group settings according to application requirements, but Least Recently Used provides a practical general purpose default. Eviction is different from expiration. Eviction removes an object because cache capacity is needed, while expiration occurs when the cached content reaches its configured lifetime or is explicitly invalidated. Both mechanisms help control how cached application content is maintained.

Question 238. What is a cache hit?

1. Response served from cache
2. Response rejected by policy
3. Request sent only to DNS
4. Failed backend monitor

Correct Answer: 1. Response served from cache

Explanation:

A cache hit occurs when NetScaler finds a valid cached response for the incoming request and serves that response directly from Integrated Caching. This avoids forwarding the request to the origin server and can reduce server workload, bandwidth usage, and response time. A cache miss occurs when the required response is not available or cannot be used from cache. Policies, selectors, content groups, cache headers, and expiration settings influence whether an object can be found and served. Improving the cache hit rate for suitable content is one of the key goals of an effective caching configuration.

Question 239. What can cause an Integrated Cache miss?

1. Valid cached object exists
2. SSL profile is bound
3. Client uses TCP
4. No cache policy matches

Correct Answer: 4. No cache policy matches

Explanation:

A cache miss can occur when a request or response does not match any configured caching policy. A miss can also occur when a policy matches but standard HTTP caching rules or configured overrides prevent the object from being stored or used. When a miss occurs, NetScaler forwards the request to the origin server rather than satisfying it from local cache. Administrators can examine cache policies, content groups, selectors, expiration settings, and HTTP cache control headers when troubleshooting unexpectedly low cache hit rates. Proper policy design determines which application content is eligible for caching.

Question 240. What does the INVAL cache action do?

1. Compresses content
2. Expires cached responses
3. Creates persistence
4. Enables SSL

Correct Answer: 2. Expires cached responses

Explanation:

The INVAL action expires cached responses. Depending on the associated policy and content group configuration, the action can invalidate all responses in one or more content groups or selected cached objects. Invalidation is useful when application content changes and administrators need NetScaler to stop serving an older cached copy before its normal expiration time. The INVAL action is used in request time policies. After an object is expired, NetScaler retrieves a fresh version from the origin server when the content is requested again. This allows administrators to keep cached application data synchronized with backend changes.